360 WWUS45 KSLC 180408 WSWSLC URGENT - WINTER WEATHER MESSAGE National Weather Service Salt Lake City UT 1008 PM MDT Sun May 17 2026 UTZ112-WYZ021-181915- /O.CON.KSLC.WW.Y.0013.000000T0000Z-260519T0600Z/ Western Uinta Mountains-Southwest Wyoming- Including the following locations - Mirror Lake Highway, Moon Lake, Evanston, and Lyman 1008 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY NIGHT... * WHAT...Snow expected. Total snow accumulations of 6 to 14 inches for the Western Uinta Mountains with locally higher amounts further east into the Uinta mountains, and 2 to 6 inches for southwest Wyoming with locally in excess of 10 inches closer to the north slopes of the Uintas. * WHERE...In Utah, Western Uinta Mountains. In Wyoming, Southwest Wyoming. * WHEN...Until midnight MDT Monday Night. * IMPACTS...Travel could be difficult at times. Traction law restrictions may be enacted. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. In Utah, for winter road conditions from the Utah Department of Transportation, visit http://www.udottraffic.utah.gov. In Wyoming, for winter road conditions from the Wyoming Department of Transportation, visit http://www.wyoroad.info or dial 511. For graphical depictions of the snowfall forecast, including Official NWS Forecast, High End Amount, and Low End Amount, visit weather.gov/slc/winter. && $$ For more information from the National Weather Service visit https://weather.gov/saltlakecity. For information on potential travel impacts visit http://udottraffic.utah.gov HM  600 WWUS45 KGJT 180434 WSWGJT URGENT - WINTER WEATHER MESSAGE National Weather Service Grand Junction CO 1034 PM MDT Sun May 17 2026 UTZ023-182145- /O.CON.KGJT.WW.Y.0014.000000T0000Z-260519T0000Z/ Eastern Uinta Mountains- Including the cities of Manila and Dutch John 1034 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT MONDAY... * WHAT...Moderate to heavy snow at times total snow accumulations between 6 and 12 inches. Wind gusts up to 40 mph. * WHERE...Eastern Uinta Mountains. * WHEN...Until 6 PM MDT Monday. * IMPACTS...Travel could be difficult at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ COZ004-182145- /O.CON.KGJT.WW.Y.0014.260518T0600Z-260519T0300Z/ Elkhead and Park Mountains- Including the cities of Columbine, Hahns Peak, and Toponas 1034 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY ABOVE 9500 FEET... * WHAT...Snow expected above 9500 feet. Total snow accumulations between 5 to 10 inches. Wind gusts as high as 35 mph. * WHERE...Elkhead and Park Mountains. * WHEN...Until 9 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ 15  439 WWUS45 KBOU 180458 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1058 PM MDT Sun May 17 2026 COZ033-181900- /O.UPG.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ /O.NEW.KBOU.WS.W.0006.260518T0600Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Laramie and Medicine Bow Mountains, Rocky Mountain National Park, Rabbit Ears Range, Willow Creek Pass, and Cameron Pass 1058 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 9 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 8 to 18 inches. Highest amounts on east facing slopes. * WHERE...Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 9 PM MDT Monday. * IMPACTS...Travel could be very difficult and affect the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. If traveling to the mountains, be prepared for winter driving conditions. Check cotrip.org for road closures and traction laws. && $$ COZ031-181900- /O.CON.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 1058 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 5 to 14 inches, heaviest in the Park Range. Winds gusting as high as 30 mph. * WHERE...Rabbit Ears Pass. * WHEN...Until 9 PM MDT Monday. * IMPACTS...Travel could be slippery with snow covered roads at times, especially late tonight and during the periods of heaviest snowfall on Monday. The hazardous conditions may impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ034-181900- /O.CON.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Mount Blue Sky, Eisenhower Tunnel, Williams Fork Mountains, Berthoud Pass, Kenosha Mountains, Breckenridge, Winter Park, East Slopes Southern Gore Range, and East Slopes Mosquito Range 1058 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 12 inches over most of the Advisory area. However, little if any accumulation in the valleys of Summit County while the heaviest amounts occur in the mountains north of I-70. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 9 PM MDT Monday. * IMPACTS...Travel could be slippery with snow covered roads at times, especially late tonight and during the periods of heaviest snowfall on Monday. The hazardous conditions may impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ For more information from the National Weather Service, visit https://weather.gov/bou 63