FNUS56 KPDT 191241 FWFPDT Fire Weather Planning Forecast for NE Oregon and SE Washington National Weather Service Pendleton OR 541 AM PDT Tue May 19 2026 .DISCUSSION... Light winds this morning will increase to breezy and locally windy through the gaps (Kittitas valley and Eastern Columbia River Gorge). Breezy conditions will extend through the Blue Mountain Foothills and north Central Oregon. ***Winds are 20 foot 10 minute averages *** ***CWR: Chance of wetting rain 0.10 or greater *** ***Ventilation Index is derived from transport wind multiplied by the mixing height in 100's of ft. Categories are a generalized indicator and users are encourage to develop criteria that are suitable and representative of dispersion conditions in their local area of interest. Categories: low (< 200), moderate (200-500), high (500-700), and very high (> 700). -Note: Max transport winds may not occur at the same time as max mixing height. *** WAZ695-192315- East Washington South Central Cascade Mountains- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....55-64...except 47-55 ridges. * Min humidity........42-57 percent...except 53-68 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 5 to 11 mph. * Ridges/upr slopes....West winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (107-181) increasing to moderate to high (334-598) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Min temperature.....37-43. * Max humidity........75-90 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 6 to 12 mph. * Ridges/upr slopes....Northwest winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest around 15 mph. * Ventilation Index...Moderate (201-355) decreasing to low (46-78) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....62-70...except 54-62 ridges. * Min humidity........36-51 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....North around 10 mph. * Ventilation Index...Low (73-121) increasing to moderate (360-454) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 39 to 45. Highs 61 to 73. Northwest winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 41 to 48. Highs 61 to 74. Northwest winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 42 to 48. Highs 60 to 73. West winds 5 to 11 mph. .SUNDAY...Partly cloudy. Lows 40 to 47. Highs 58 to 70. West winds 6 to 12 mph. .MEMORIAL DAY...Partly cloudy with a slight chance of rain and snow showers. Lows 37 to 44. Highs 49 to 62. West winds 8 to 14 mph. $$ WAZ690-192315- Kittitas Valley- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....65-73...except 56-66 ridges. * Min humidity........32-43 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 4 to 9 mph increasing to northwest 10 to 16 mph in the afternoon. * Ridges/upr slopes....Northwest winds 9 to 15 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....Northwest 10 to 15 mph. * Ventilation Index...Low to moderate (127-225) increasing to high to very high (576-990) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....43-48. * Max humidity........65-80 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 10 to 16 mph. Gusts to 30 mph in the evening. * Ridges/upr slopes....Northwest winds 10 to 16 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 15 to 20 mph. * Ventilation Index...Moderate to high (384-500) decreasing to low (46-76) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....69-77...except 61-70 ridges. * Min humidity........26-36 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 4 to 9 mph in the morning becoming upslope less than 5 mph. * Ridges/upr slopes....Northwest winds 7 to 13 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (95-147) increasing to moderate (325-407) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 45 to 51. Highs 71 to 80. Northwest winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 49 to 54. Highs 74 to 82. Northwest winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 49 to 54. Highs 73 to 82. Northwest winds 9 to 15 mph. .SUNDAY...Partly cloudy. Lows 48 to 53. Highs 71 to 79. West winds 8 to 14 mph. .MEMORIAL DAY...Partly cloudy. Lows 45 to 50. Highs 63 to 72. West winds 10 to 17 mph. $$ WAZ694-192315- Yakama Alpine District- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....63-69...except 51-64 ridges. * Min humidity........33-47 percent...except 44-59 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (62-104) increasing to moderate to high (366-544) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Min temperature.....38-45. * Max humidity........76-91 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Low to moderate (173-255) decreasing to low (25-43) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....67-73...except 57-68 ridges. * Min humidity........32-47 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming south 1 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (36-78) increasing to moderate (265-367) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 42 to 48. Highs 65 to 77. North winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 44 to 51. Highs 66 to 79. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 44 to 50. Highs 66 to 78. West winds 4 to 9 mph. .SUNDAY...Partly cloudy. Lows 42 to 49. Highs 62 to 74. West winds 4 to 10 mph. .MEMORIAL DAY...Partly cloudy. Lows 40 to 47. Highs 54 to 67. West winds 7 to 13 mph. $$ ORZ691-WAZ691-192315- Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....67-75...except 63-70 ridges. * Min humidity........29-37 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 6 to 12 mph. * Ridges/upr slopes....West winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (89-175) increasing to high to very high (538-828) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. * Min temperature.....44-49. * Max humidity........71-84 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...West winds 6 to 12 mph. * Ridges/upr slopes....West winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Moderate (268-430) decreasing to low (26-48) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....70-77...except 66-72 ridges. * Min humidity........25-35 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 6 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8000 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (58-132) increasing to moderate (325-419) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 46 to 51. Highs 74 to 81. North winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 49 to 54. Highs 77 to 84. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 49 to 54. Highs 76 to 85. West winds 5 to 11 mph. .SUNDAY...Partly cloudy. Lows 49 to 54. Highs 75 to 82. Southwest winds 6 to 12 mph. .MEMORIAL DAY...Partly cloudy. Lows 47 to 52. Highs 67 to 75. West winds 10 to 16 mph. $$ ORZ692-WAZ692-192315- Northern Blue Mountains of Oregon-Blue Mountains of Washington- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....59-68...except 52-58 ridges. * Min humidity........37-50 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (96-148) increasing to moderate to high (480-598) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....38-45. * Max humidity........74-89 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...West winds 1 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....West winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low to moderate (181-255) decreasing to low (31-43) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....61-69...except 54-60 ridges. * Min humidity........39-52 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Low (86-134) increasing to moderate to high (377-503) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 39 to 46. Highs 61 to 72. North winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 42 to 49. Highs 65 to 76. Northeast winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 44 to 52. Highs 67 to 77. Southwest winds 2 to 7 mph. .SUNDAY...Mostly clear. Lows 44 to 51. Highs 66 to 76. Southwest winds 2 to 7 mph. .MEMORIAL DAY...Partly cloudy. Lows 43 to 50. Highs 58 to 68. West winds 4 to 10 mph. $$ ORZ693-WAZ693-192315- Canyon Grasslands of Wallowa County- Southeast Washington Grande Ronde Valley- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Max temperature.....59-68...except 54-61 ridges. * Min humidity........32-40 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming west 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (86-120) increasing to moderate to high (457-617) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....36-44. * Max humidity........66-81 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 6 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low to moderate (134-236) decreasing to low (25-28) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....61-69...except 56-62 ridges. * Min humidity........35-43 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 3 to 8 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (74-100) increasing to moderate to high (486-634) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 37 to 45. Highs 63 to 72. North winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 40 to 48. Highs 68 to 76. North winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 42 to 50. Highs 71 to 80. Southwest winds 2 to 7 mph. .SUNDAY...Mostly clear. Lows 42 to 51. Highs 71 to 80. Southwest winds 3 to 8 mph. .MEMORIAL DAY...Partly cloudy with a slight chance of showers. Lows 42 to 50. Highs 63 to 72. West winds 4 to 9 mph. $$ ORZ701-192315- Eastern Columbia River Gorge of Oregon- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....66-71...except 61-68 ridges. * Min humidity........34-46 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph shifting to the northwest 7 to 13 mph with gusts up to 25 mph in the afternoon. In the eastern Columbia River Gorge, west winds 4 to 9 mph increasing to 10 to 16 mph with gusts up to 30 mph in the afternoon. * Ridges/upr slopes....West winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low (74-132) increasing to moderate to very high (497-751) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. * Min temperature.....42-48. * Max humidity........77-90 percent. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 8 to 14 mph with gusts up to 25 mph decreasing to 2 to 7 mph after midnight. In the eastern Columbia River Gorge, west winds 9 to 15 mph with gusts up to 30 mph decreasing to 4 to 9 mph after midnight. * Ridges/upr slopes....West winds 6 to 12 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Moderate (246-368) decreasing to low (30-48) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....70-75. * Min humidity........32-40 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. In the eastern Columbia River Gorge, west winds 2 to 7 mph. * Ridges/upr slopes....North winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......5500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (35-99) increasing to moderate (294-376) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 45 to 50. Highs 76 to 81. Northwest winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 48 to 53. Highs 76 to 81. West winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 47 to 52. Highs 75 to 80. West winds 6 to 12 mph. .SUNDAY...Partly cloudy. Lows 46 to 51. Highs 73 to 78. West winds 6 to 12 mph. .MEMORIAL DAY...Partly cloudy with a slight chance of showers. Lows 45 to 50. Highs 65 to 70. West winds 7 to 13 mph. $$ ORZ702-192315- East Slopes of the Mt. Hood National Forest- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....61-69...except 55-64 ridges. * Min humidity........37-52 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming west 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6000 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Low (81-117) increasing to moderate to high (364-516) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. * Min temperature.....37-44. * Max humidity........78-93 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Low to moderate (196-266) decreasing to low (37-53) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....67-72...except 60-68 ridges. * Min humidity........34-48 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......5500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (33-53) increasing to moderate (238-352) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 41 to 47. Highs 66 to 77. North winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 43 to 50. Highs 66 to 79. Northwest winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 42 to 49. Highs 65 to 77. West winds 2 to 7 mph. .SUNDAY...Partly cloudy. Lows 41 to 48. Highs 63 to 75. West winds 3 to 8 mph. .MEMORIAL DAY...Partly cloudy with a slight chance of showers. Lows 39 to 46. Highs 53 to 66. West winds 4 to 10 mph. $$ ORZ695-192315- Eagle Cap Wilderness- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....56-66...except 45-56 ridges. * Min humidity........32-47 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (63-121) increasing to moderate to high (344-534) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....37-42...except 30-38 ridges. * Max humidity........66-77 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (123-197) decreasing to low (25-34) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....59-69...except 48-59 ridges. * Min humidity........29-43 percent...except 40-55 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 3 to 8 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (71-127) increasing to moderate to high (471-615) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 33 to 42. Highs 55 to 70. North winds 4 to 9 mph. .FRIDAY...Mostly clear. Lows 36 to 45. Highs 58 to 73. North winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 38 to 47. Highs 62 to 77. West winds 3 to 8 mph. .SUNDAY...Mostly clear. Lows 39 to 48. Highs 62 to 77. Southwest winds 4 to 9 mph. .MEMORIAL DAY...Partly cloudy with a slight chance of showers. Lows 40 to 48. Highs 56 to 71. West winds 5 to 11 mph. $$ ORZ694-192315- Grande Ronde Valley of Oregon- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....64-69. * Min humidity........33-38 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (57-99) increasing to moderate to high (388-500) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....36-41. * Max humidity........81-95 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low to moderate (169-211) decreasing to low (25-30) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....67-72. * Min humidity........33-38 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 3 to 8 mph in the afternoon. * Ridges/upr slopes....North winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6500 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Low (67-119) increasing to high (507-593) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 37 to 42. Highs 70 to 75. North winds 4 to 10 mph. .FRIDAY...Mostly clear. Lows 39 to 44. Highs 74 to 79. North winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 42 to 47. Highs 76 to 81. West winds 2 to 7 mph. .SUNDAY...Mostly clear. Lows 42 to 47. Highs 77 to 82. Southwest winds 3 to 8 mph. .MEMORIAL DAY...Partly cloudy. Lows 42 to 47. Highs 68 to 73. Northwest winds 5 to 11 mph. $$ ORZ699-192315- Western Forested Blue Mountains- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....60-66...except 54-60 ridges. * Min humidity........28-39 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (72-118) increasing to moderate to high (497-619) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....35-40. * Max humidity........73-88 percent. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds up to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 6 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Moderate (235-325) decreasing to low (25-37) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....62-69...except 57-63 ridges. * Min humidity........30-42 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (65-113) increasing to moderate to high (444-634) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 37 to 42. Highs 62 to 71. North winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 39 to 45. Highs 66 to 75. North winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 42 to 47. Highs 69 to 77. West winds 1 to 6 mph. .SUNDAY...Mostly clear. Lows 42 to 47. Highs 68 to 77. Southwest winds 2 to 7 mph. .MEMORIAL DAY...Partly cloudy. Lows 41 to 46. Highs 60 to 69. West winds 2 to 7 mph. $$ ORZ696-192315- John Day Valley- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....63-71...except 58-63 ridges. * Min humidity........24-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (53-85) increasing to high (530-622) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....38-43. * Max humidity........71-83 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Moderate (286-348) decreasing to low (25-28) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....66-74...except 61-66 ridges. * Min humidity........25-32 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (45-79) increasing to moderate to high (410-552) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 39 to 45. Highs 68 to 77. North winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 42 to 47. Highs 72 to 81. North winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 44 to 49. Highs 74 to 83. Northwest winds 1 to 6 mph. .SUNDAY...Mostly clear. Lows 44 to 49. Highs 74 to 83. Southwest winds 2 to 7 mph. .MEMORIAL DAY...Partly cloudy. Lows 43 to 48. Highs 66 to 74. West winds 4 to 9 mph. $$ ORZ700-192315- Central Mountains of Oregon- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....65-71...except 57-63 ridges. * Min humidity........20-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (45-83) increasing to high (530-652) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....35-41. * Max humidity........74-84 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...North winds 4 to 9 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....North around 15 mph decreasing to around 5 mph after midnight. * Ventilation Index...Moderate (354-496) decreasing to low (25-41) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....68-73...except 60-66 ridges. * Min humidity........22-28 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8000 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (43-85) increasing to moderate to high (407-555) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 37 to 44. Highs 71 to 78. North winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 40 to 47. Highs 74 to 81. North winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 41 to 47. Highs 75 to 82. Northwest winds 3 to 8 mph. .SUNDAY...Mostly clear. Lows 40 to 46. Highs 75 to 81. Southwest winds 3 to 8 mph. .MEMORIAL DAY...Partly cloudy. Lows 40 to 45. Highs 67 to 73. West winds 6 to 12 mph. $$ ORZ703-192315- Warm Springs Reservation- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....65-74...except 53-62 ridges. * Min humidity........27-38 percent...except 39-54 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 5 to 11 mph in the afternoon. * Ridges/upr slopes....West winds 4 to 10 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West around 5 mph increasing to around 15 mph in the afternoon. * Ventilation Index...Low (68-108) increasing to moderate to very high (485-721) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. * Min temperature.....39-44. * Max humidity........75-86 percent. * Humidity recovery...Good...except Excellent ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 6 to 12 mph shifting to the west 1 to 6 mph after midnight. * Ridges/upr slopes....West winds 4 to 10 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Moderate (261-397) decreasing to low (26-52) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....68-76...except 57-66 ridges. * Min humidity........25-35 percent...except 36-51 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (35-57) increasing to moderate (337-455) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 41 to 46. Highs 70 to 81. North winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 44 to 49. Highs 71 to 84. Northwest winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 44 to 49. Highs 70 to 84. West winds 4 to 10 mph. .SUNDAY...Mostly clear. Lows 43 to 48. Highs 68 to 82. West winds 5 to 11 mph. .MEMORIAL DAY...Partly cloudy with a slight chance of showers. Lows 41 to 46. Highs 59 to 73. West winds 7 to 13 mph. $$ ORZ704-192315- Northern Deschutes National Forest- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....66-71...except 52-63 ridges. * Min humidity........28-33 percent...except 36-51 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Low (59-77) increasing to moderate to high (445-563) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....34-39. * Max humidity........75-90 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....West winds 4 to 9 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Moderate (210-284) decreasing to low (25-30) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....69-75...except 56-66 ridges. * Min humidity........27-33 percent...except 36-51 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 1 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 1 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (25-39) increasing to moderate (345-435) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 38 to 43. Highs 65 to 78. Northeast winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 40 to 45. Highs 66 to 80. Northwest winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 40 to 45. Highs 66 to 80. West winds 2 to 7 mph. .SUNDAY...Mostly clear. Lows 39 to 44. Highs 64 to 78. West winds 4 to 9 mph. .MEMORIAL DAY...Partly cloudy with a slight chance of showers. Lows 37 to 43. Highs 55 to 68. West winds 6 to 12 mph. $$ ORZ705-192315- Southern Deschutes National Forest- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....64-69...except 54-62 ridges. * Min humidity........21-36 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (46-76) increasing to moderate to high (450-596) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....33-38. * Max humidity........80-95 percent...except 69-84 percent ridges. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Moderate (215-447) decreasing to low (25-43) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....67-73...except 57-65 ridges. * Min humidity........24-31 percent...except 28-43 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 1 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 1 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......8000 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Low (41-69) increasing to moderate (402-490) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 36 to 41. Highs 68 to 77. Northeast winds 1 to 6 mph. .FRIDAY...Mostly clear. Lows 38 to 43. Highs 69 to 80. North winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 38 to 43. Highs 69 to 79. Northwest winds 1 to 6 mph. .SUNDAY...Mostly clear. Lows 37 to 42. Highs 68 to 79. West winds 1 to 6 mph. .MEMORIAL DAY...Partly cloudy. Lows 37 to 42. Highs 59 to 70. West winds 3 to 8 mph. $$ ORZ697-192315- Central Blue Mountains- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....61-66...except 55-61 ridges. * Min humidity........25-30 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....West winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (87-149) increasing to high (606-696) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....34-39. * Max humidity........68-80 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....North around 10 mph. * Ventilation Index...Moderate (305-347) decreasing to low (26-36) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....64-69...except 59-64 ridges. * Min humidity........27-32 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9500 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Low (87-131) increasing to high to very high (588-732) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 36 to 41. Highs 64 to 71. North winds 2 to 7 mph. .FRIDAY...Mostly clear. Lows 38 to 43. Highs 67 to 74. North winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 41 to 46. Highs 70 to 76. Northwest winds 1 to 6 mph. .SUNDAY...Mostly clear. Lows 41 to 46. Highs 71 to 77. Southwest winds 3 to 8 mph. .MEMORIAL DAY...Partly cloudy. Lows 40 to 46. Highs 64 to 70. West winds 4 to 9 mph. $$ ORZ698-192315- Southern Blue Mountains- 541 AM PDT Tue May 19 2026 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....61-66...except 56-61 ridges. * Min humidity........19-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (100-138) increasing to high to very high (685-755) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....34-40. * Max humidity........66-80 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 2 to 6 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......500 ft agl. * Transport winds.....North around 10 mph. * Ventilation Index...Moderate (336-428) decreasing to low (33-41) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....65-70...except 60-65 ridges. * Min humidity........21-26 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9500 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Low (93-123) increasing to high to very high (652-758) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 36 to 41. Highs 68 to 74. North winds 3 to 8 mph. .FRIDAY...Mostly clear. Lows 38 to 44. Highs 72 to 77. Northwest winds 1 to 6 mph. .SATURDAY...Mostly clear. Lows 41 to 46. Highs 75 to 80. Northwest winds 2 to 7 mph. .SUNDAY...Mostly clear. Lows 40 to 46. Highs 75 to 81. Southwest winds 3 to 8 mph. .MEMORIAL DAY...Partly cloudy. Lows 40 to 46. Highs 68 to 75. West winds 5 to 11 mph. $$ .8-14 DAY OUTLOOK for Tuesday May 26 through Monday June 1... A greater chance of above normal temperatures and near normal precipitation across eastern Washington and and Eastern Oregon. A greater chance for near normal temperatures and precipitation for central Oregon and the Yakima and Kittitas Valleys. $$