FNUS75 KTWC 091259 FWSTWC Spot Forecast for Sheep Fire...USDA/USFS National Weather Service Tucson AZ 559 AM MST Thu Jul 9 2026 Forecast is based on forecast start time of 0700 MST on July 09. .DISCUSSION...Clouds developing this morning after 9 am leading to showers and thunderstorms developing after 11 am. Brief heavy rain with these storms along with gusty erratic winds. Repeat timing of storms on Friday, although these may be a bit wetter than the ones today. Otherwise very warm both days with minimum RH values in the upper teens to lower 20s. .REST OF TODAY... Sky/weather.........Becoming partly cloudy. Chance of showers and thunderstorms after 11 am. Chance of pcpn......50 percent in the afternoon. Rainfall amount.....Between 0.10" and 0.25" Max temperature.....86-89 degrees. Min humidity........19-22 percent. 20-foot winds.......Northeast winds up to 5 mph this morning before shifting to the west 5 to 7 mph this. Gusty and erratic winds expected near thunderstorms late in the morning. Smoke dispersal.....Poor (4000 knot-ft) increasing to very good (75000 knot-ft) in the afternoon before decreasing. Mixing height.......600 ft AGL increasing to 12500 ft AGL in the afternoon before decreasing. Transport winds.....North 4 to 7 knots shifting to the northwest 9 to 12 knots in the afternoon. TIME (MST) 7 AM 10 AM 1 PM 4 PM Sky (%).........14 7 61 71 Weather cov..... CHANCE CHANCE Weather type....NONE NONE RNSHWR RNSHWR Tstm cov........ CHANCE CHANCE CWR.............0 0 50 40 Temp............72 84 87 81 RH..............39 23 21 28 20 FT wind......NE 3G6 E 2G6 W 4G8 W 4G11 Mix hgt (ft)....600 9000 9800 5400 Transport wind..N 7 N 6 W 7 W 9 Vrate kt-ft/1K..4 54 69 49 Ventrate Cat....POOR GOOD GOOD GOOD .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Slight chance of showers and thunderstorms early in the evening. Chance of pcpn......20 percent decreasing to 10 percent early in the evening. Rainfall amounts....Less than 0.10". Min temperature.....65-68 degrees. Max humidity........46-49 percent. 20-foot winds.......Northwest winds 5 to 10 mph. Gusty and erratic winds expected near thunderstorms early in the evening. Smoke dispersal.....Marginal (11600 knot-ft) decreasing to poor (3700 knot-ft) early in the evening. Mixing height.......400 ft AGL. Transport winds.....Northwest 8 to 11 knots. TIME (MST) 6 PM 9 PM MIDNGT 3 AM Sky (%).........69 31 14 10 Weather cov.....S CHC Weather type....RNSHWR NONE NONE NONE Tstm cov........S CHC CWR.............20 10 0 0 Temp............80 72 70 68 RH..............33 45 42 43 20 FT wind......W 4G12 NW 4G10 W 5G11 NW 6G14 Mix hgt (ft)....1700 500 500 600 Transport wind..W 11 NW 9 W 8 NW 11 Vrate kt-ft/1K..18 5 4 6 Ventrate Cat....MRGL POOR POOR POOR .FRIDAY... Sky/weather.........Sunny then becoming partly cloudy. Chance of showers and thunderstorms. Chance of pcpn......30 to 40 percent in the afternoon. Rainfall amounts....15" to 0.40". Max temperature.....86-89 degrees. Min humidity........20-23 percent. 20-foot winds.......Northwest winds 5 to 8 mph, then shifting to the west 5 to 7 mph in the afternoon. Gusty and erratic winds expected near thunderstorms in the afternoon. Smoke dispersal.....Poor (3800 knot-ft) increasing to very good (71000 knot-ft) early in the afternoon before decreasing. Mixing height.......1900 ft AGL increasing to 11400 ft AGL early in the afternoon before decreasing. Transport winds.....Northwest 6 to 10 knots shifting to the north 9 to 17 knots late in the afternoon. TIME (MST) 6 AM 9 AM NOON 3 PM Sky (%).........15 2 61 61 Weather cov..... CHANCE CHANCE Weather type....NONE NONE RNSHWR RNSHWR Tstm cov........ CHANCE CHANCE CWR.............0 0 30 40 Temp............66 79 87 83 RH..............44 29 21 26 20 FT wind......NW 5G10 W 3G6 W 4G8 NW 4G11 Mix hgt (ft)....500 4300 11000 4200 Transport wind..NW 7 W 7 NW 6 N 17 Vrate kt-ft/1K..4 30 66 71 Ventrate Cat....POOR FAIR GOOD VYGD $$ Forecaster...FIRE WX FORECASTER Requested by...Naomi Corkish Type of request...WILDFIRE .TAG 2617050.0/TWC .DELDT 07/09/26 .FormatterVersion 2.0.0 .EMAIL naomi.corkish@usda.gov,joseph.names@usda.gov,joshua.salazar@usda.gov Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson