|
Home Return to list Winter Weather Advisory 0018 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-05-17 05:27:37 714 WWUS45 KBOU 171027 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 427 AM MDT Sun May 17 2026 COZ033-034-172130- /O.NEW.KBOU.WW.Y.0018.260518T0600Z-260519T0000Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-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 Laramie and Medicine Bow Mountains, Eisenhower Tunnel, Willow Creek Pass, Winter Park, Rabbit Ears Range, East Slopes Southern Gore Range, Berthoud Pass, Indian Peaks, Kenosha Mountains, Mount Blue Sky, East Slopes Mosquito Range, Williams Fork Mountains, Cameron Pass, Rocky Mountain National Park, and Breckenridge 427 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 15 inches. Winds gusting as high as 45 mph. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, the Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions will 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. && $$ For more information from the National Weather Service, visit https://weather.gov/bou AP Action: Time and Area Extended Issued At: 2026-05-17 12:50:53 437 WWUS45 KBOU 171750 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1150 AM MDT Sun May 17 2026 COZ031-181200- /O.EXB.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 1150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 5 to 14 inches, heaviest in the Park Range. Winds gusting as high as 30 mph. * WHERE...Rabbit Ears Pass. * WHEN...From midnight tonight to 9 PM MDT Monday. * IMPACTS...Travel could be slippery with snow covered roads at times, especially late tonight and during the periods of heaviest snowfall on Monday. The hazardous conditions may impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ033-034-181200- /O.EXT.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-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 East Slopes Southern Gore Range, Winter Park, Cameron Pass, Rocky Mountain National Park, Willow Creek Pass, Williams Fork Mountains, Mount Blue Sky, Breckenridge, Berthoud Pass, East Slopes Mosquito Range, Rabbit Ears Range, Laramie and Medicine Bow Mountains, Indian Peaks, Eisenhower Tunnel, and Kenosha Mountains 1150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 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...Rocky Mountain National Park and the Medicine Bow Range, the Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From midnight tonight to 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. && $$ For more information from the National Weather Service, visit https://weather.gov/bou 20 Action: Time Extended Issued At: 2026-05-17 12:50:53 437 WWUS45 KBOU 171750 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1150 AM MDT Sun May 17 2026 COZ031-181200- /O.EXB.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 1150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 5 to 14 inches, heaviest in the Park Range. Winds gusting as high as 30 mph. * WHERE...Rabbit Ears Pass. * WHEN...From midnight tonight to 9 PM MDT Monday. * IMPACTS...Travel could be slippery with snow covered roads at times, especially late tonight and during the periods of heaviest snowfall on Monday. The hazardous conditions may impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ033-034-181200- /O.EXT.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-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 East Slopes Southern Gore Range, Winter Park, Cameron Pass, Rocky Mountain National Park, Willow Creek Pass, Williams Fork Mountains, Mount Blue Sky, Breckenridge, Berthoud Pass, East Slopes Mosquito Range, Rabbit Ears Range, Laramie and Medicine Bow Mountains, Indian Peaks, Eisenhower Tunnel, and Kenosha Mountains 1150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 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...Rocky Mountain National Park and the Medicine Bow Range, the Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From midnight tonight to 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. && $$ For more information from the National Weather Service, visit https://weather.gov/bou 20 Action: Continued Issued At: 2026-05-17 23:58:45 790 WWUS45 KBOU 180458 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1058 PM MDT Sun May 17 2026 COZ033-181900- /O.UPG.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ /O.NEW.KBOU.WS.W.0006.260518T0600Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Laramie and Medicine Bow Mountains, Rocky Mountain National Park, Rabbit Ears Range, Willow Creek Pass, and Cameron Pass 1058 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 9 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 8 to 18 inches. Highest amounts on east facing slopes. * WHERE...Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 9 PM MDT Monday. * IMPACTS...Travel could be very difficult and affect the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. If traveling to the mountains, be prepared for winter driving conditions. Check cotrip.org for road closures and traction laws. && $$ 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 Action: Upgraded Issued At: 2026-05-17 23:58:45 790 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. && $$ For more information from the National Weather Service, visit https://weather.gov/bou 63 Action: Continued Issued At: 2026-05-17 23:58:45 790 WWUS45 KBOU 180458 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1058 PM MDT Sun May 17 2026 COZ033-181900- /O.UPG.KBOU.WW.Y.0018.260518T0600Z-260519T0300Z/ /O.NEW.KBOU.WS.W.0006.260518T0600Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Laramie and Medicine Bow Mountains, Rocky Mountain National Park, Rabbit Ears Range, Willow Creek Pass, and Cameron Pass 1058 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 9 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 8 to 18 inches. Highest amounts on east facing slopes. * WHERE...Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 9 PM MDT Monday. * IMPACTS...Travel could be very difficult and affect the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. If traveling to the mountains, be prepared for winter driving conditions. Check cotrip.org for road closures and traction laws. && $$ 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 Action: Continued Issued At: 2026-05-18 10:06:45 154 WWUS45 KBOU 181506 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 906 AM MDT Mon May 18 2026 COZ033-182315- /O.CON.KBOU.WS.W.0006.000000T0000Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Willow Creek Pass, Laramie and Medicine Bow Mountains, Cameron Pass, Rabbit Ears Range, and Rocky Mountain National Park 906 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * 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 this evening. * 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. && $$ COZ030-035-182315- /O.EXA.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ Jackson County Below 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Walden, Gould, North Park, Rand, Glendevey, Red Feather Lakes, Estes Park, Nederland, and Spicer 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 6 inches. * WHERE...North Park, and the Northern Front Range Foothills. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be difficult due to slick roads, especially during periods of heavier snowfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ031-182315- /O.CON.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow. 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 this evening. * IMPACTS...Travel could be slippery with snow covered roads at times, especially during the periods of heaviest snowfall through early afternoon today. 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. && $$ COZ034-182315- /O.CON.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Mount Blue Sky, Indian Peaks, Williams Fork Mountains, East Slopes Southern Gore Range, Berthoud Pass, Kenosha Mountains, East Slopes Mosquito Range, Breckenridge, Eisenhower Tunnel, and Winter Park 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 4 to 10 inches over most of the Advisory area. However, little if any accumulation in the valleys of Summit County while the heaviest amounts occur in the mountains north of I-70. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be slippery with snow covered roads at times, especially during the period of heaviest snowfall from mid morning through mid afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ For more information from the National Weather Service, visit https://weather.gov/bou 20 Action: Continued Issued At: 2026-05-18 10:06:45 154 WWUS45 KBOU 181506 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 906 AM MDT Mon May 18 2026 COZ033-182315- /O.CON.KBOU.WS.W.0006.000000T0000Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Willow Creek Pass, Laramie and Medicine Bow Mountains, Cameron Pass, Rabbit Ears Range, and Rocky Mountain National Park 906 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * 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 this evening. * 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. && $$ COZ030-035-182315- /O.EXA.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ Jackson County Below 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Walden, Gould, North Park, Rand, Glendevey, Red Feather Lakes, Estes Park, Nederland, and Spicer 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 6 inches. * WHERE...North Park, and the Northern Front Range Foothills. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be difficult due to slick roads, especially during periods of heavier snowfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ031-182315- /O.CON.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow. 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 this evening. * IMPACTS...Travel could be slippery with snow covered roads at times, especially during the periods of heaviest snowfall through early afternoon today. 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. && $$ COZ034-182315- /O.CON.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Mount Blue Sky, Indian Peaks, Williams Fork Mountains, East Slopes Southern Gore Range, Berthoud Pass, Kenosha Mountains, East Slopes Mosquito Range, Breckenridge, Eisenhower Tunnel, and Winter Park 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 4 to 10 inches over most of the Advisory area. However, little if any accumulation in the valleys of Summit County while the heaviest amounts occur in the mountains north of I-70. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be slippery with snow covered roads at times, especially during the period of heaviest snowfall from mid morning through mid afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ For more information from the National Weather Service, visit https://weather.gov/bou 20 Action: Area Extended Issued At: 2026-05-18 10:06:45 154 WWUS45 KBOU 181506 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 906 AM MDT Mon May 18 2026 COZ033-182315- /O.CON.KBOU.WS.W.0006.000000T0000Z-260519T0300Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Willow Creek Pass, Laramie and Medicine Bow Mountains, Cameron Pass, Rabbit Ears Range, and Rocky Mountain National Park 906 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * 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 this evening. * 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. && $$ COZ030-035-182315- /O.EXA.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ Jackson County Below 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Walden, Gould, North Park, Rand, Glendevey, Red Feather Lakes, Estes Park, Nederland, and Spicer 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 6 inches. * WHERE...North Park, and the Northern Front Range Foothills. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be difficult due to slick roads, especially during periods of heavier snowfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ031-182315- /O.CON.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow. 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 this evening. * IMPACTS...Travel could be slippery with snow covered roads at times, especially during the periods of heaviest snowfall through early afternoon today. 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. && $$ COZ034-182315- /O.CON.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Mount Blue Sky, Indian Peaks, Williams Fork Mountains, East Slopes Southern Gore Range, Berthoud Pass, Kenosha Mountains, East Slopes Mosquito Range, Breckenridge, Eisenhower Tunnel, and Winter Park 906 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 4 to 10 inches over most of the Advisory area. However, little if any accumulation in the valleys of Summit County while the heaviest amounts occur in the mountains north of I-70. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Travel could be slippery with snow covered roads at times, especially during the period of heaviest snowfall from mid morning through mid afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ For more information from the National Weather Service, visit https://weather.gov/bou 20 Action: Expired Issued At: 2026-05-18 21:55:38 463 WWUS45 KBOU 190255 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 855 PM MDT Mon May 18 2026 COZ033-190400- /O.EXP.KBOU.WS.W.0006.000000T0000Z-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, Rabbit Ears Range, Cameron Pass, Willow Creek Pass, and Rocky Mountain National Park 855 PM MDT Mon May 18 2026 ...WINTER STORM WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... While light snow may continue through the early overnight hours, little additional accumulation is expected tonight. Therefore, the Winter Storm Warning will be allowed to expire. $$ COZ030-031-034-035-190400- /O.EXP.KBOU.WW.Y.0018.000000T0000Z-260519T0300Z/ Jackson County Below 9000 Feet-West Jackson and West Grand Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Breckenridge, East Slopes Mosquito Range, Indian Peaks, Walden, Gould, Rand, Winter Park, Estes Park, Berthoud Pass, North Park, East Slopes Southern Gore Range, Mount Blue Sky, Mt Zirkel, Eisenhower Tunnel, Spicer, Red Feather Lakes, Williams Fork Mountains, Nederland, Kenosha Mountains, and Glendevey 855 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 PM MDT THIS EVENING... Light snow is expected to continue over the next few hours, but any additional accumulation should be light. Lingering travel impacts are possible overnight, mainly across the higher elevations of the northern Front Range Foothills. $$ For more information from the National Weather Service, visit https://weather.gov/bou Hiris | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||