Alert archive / Colorado / Blizzard Warnings in 2018
Blizzard Warning 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this blizzard warning at Jan 21, 2018, 4:15 AM MST for 6 counties in Colorado. It was in force for 20 hr. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 21, 2018, 4:15 AM MST (11:15 UTC)
- Expired
- Jan 22, 2018, 12:00 AM MST
- In force
- 20 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Elbert County, CO, Lincoln County, CO, Logan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 126 km from the middle of the area, began a volume at 11:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 21, 9:29 AM MST | SNOW 1.5 | Nnw Iliff, CO | |
| Jan 21, 1:50 PM MST | SNOW 5 | N Fleming, CO | |
| Jan 21, 8:00 PM MST | HEAVY SNOW 7.5 | 4 Nw Elizabeth, CO | |
| Jan 21, 9:00 PM MST | HEAVY SNOW 8 | Sw Holyoke, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 11.3 hours before the alert went out and 25 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1253 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 358 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
952 WWUS45 KBOU 211115 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 415 AM MST Sun Jan 21 2018 ...Winter Storm Bringing Snow and Gusty Winds to Northeast and North Central Colorado Tonight into Sunday Night... .A Four Corners low will track across Colorado today bringing snow, heavy at times, to the mountains and plains of north central and northeast Colorado. Snow will continue to spread east across eastern Colorado this morning. Parts of eastern Colorado may see freezing drizzle through mid morning. As the storm intensifies late this morning and afternoon, northerly winds will increase to 25 to 40 mph with gusts to 50 mph across the eastern plains. The gusty winds will produce blowing snow which will reduce visibilities to near zero at times. Snowfall is expected to decrease from west to east late this afternoon and evening. COZ046-048>051-212100- /O.UPG.KBOU.WS.W.0001.000000T0000Z-180122T0300Z/ /O.NEW.KBOU.BZ.W.0001.180121T1115Z-180122T0700Z/ Limon-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 415 AM MST Sun Jan 21 2018 ...BLIZZARD WARNING IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. Additional snow accumulations of 6 to 9 inches are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ047-212100- /O.UPG.KBOU.WW.Y.0005.180121T1500Z-180122T0000Z/ /O.NEW.KBOU.BZ.W.0001.180121T1115Z-180122T0700Z/ Southern Lincoln County- Including the cities of Forder, Karval, Kutch, and Punkin Center 415 AM MST Sun Jan 21 2018 ...BLIZZARD WARNING IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. Additional snow accumulations of 2 to 6 inches are expected. * WHERE...Southern Lincoln County. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 55 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ031-033>036-211900- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 415 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 5 to 10 inches are expected. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 415 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 4 to 7 inches are expected. * WHERE...Fort Collins and Greeley. * WHEN...Until 2 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 415 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 4 to 7 inches, with localized amounts up to 9 inches. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-211900- /O.CON.KBOU.WW.Y.0005.000000T0000Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 415 AM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Snow occurring. Plan on slippery road conditions. Additional snow accumulations of 3 to 6 inches are expected. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
5 follow-up statements
738 WWUS45 KBOU 211623 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 923 AM MST Sun Jan 21 2018 .Upper low over far South Central Colorado this morning will move east through this afternoon, and will continue to bring snow, heavy at times to the plains of northeast Colorado. Latest radar imagery indicating the storm is intensifying and snowfall will continue increase through late morning for locations mainly along and east of a line from Denver to Fort Morgan and points East and south across the Palmer Divide. Snowfall rates will be 1 to 2 inches in an hour can be expected in the heaviest snow. Snowfall amounts so far have been in the 2 to 4 inch range with upwards of 7 inches in the Front Range foothills. As the storm intensifies late this morning and afternoon, northerly winds will increase to 25 to 35 mph with gusts to 50 mph across the eastern plains. The gusty winds will produce blowing snow which will reduce visibilities to near zero at times. Snowfall is expected to decrease from west to east late this afternoon and evening. COZ046>051-220030- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 923 AM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. snow accumulations of 6 to 9 inches are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ031-033>036-211900- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 923 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...snow occurring. Plan on difficult travel conditions. snow accumulations of 5 to 10 inches are expected, heaviest snow on east facing slopes. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 923 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * WHAT...Light to moderate snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches are expected. * WHERE...Fort Collins and Greeley. * WHEN...Until 2 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-220000- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 923 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches, with localized amounts up to 9 inches. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-211900- /O.CON.KBOU.WW.Y.0005.000000T0000Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 923 AM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Snow occurring. Plan on slippery road conditions. Additional snow accumulations of 3 to 6 inches are expected. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
489 WWUS45 KBOU 211902 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1202 PM MST Sun Jan 21 2018 .Upper low over far southeastern Colorado will move east through this afternoon, and will continue to bring snow, heavy at times to the plains of northeast Colorado. Snowfall will continue to increase across the eastern plains. Snowfall rates will be 1 to 2 inches in an hour can be expected in the heaviest snow. Northerly winds are increasing to 25 to 35 mph with gusts to 50 mph across the eastern plains. The gusty winds will produce blowing snow which will reduce visibilities to near zero at times. Snowfall is expected to decrease from west to east late this afternoon and evening. COZ030-032-212015- /O.EXP.KBOU.WW.Y.0005.000000T0000Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 1202 PM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON MST TODAY... Light snow will continue through the afternoon, with an additional 1 to 2 inches expected through early evening. $$ COZ031-033>036-212200- /O.EXT.KBOU.WS.W.0001.000000T0000Z-180121T2200Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 1202 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * WHAT...Snow occurring, but will be decrease through the afternoon. Snow will linger the longest over the mountains of Summit County and around I-70. Plan on difficult travel conditions. Additional snow accumulations of 2 to 5 inches are expected, heaviest snow on east facing slopes and mountains along I70. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until 3 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ046>051-220315- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 1202 PM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. snow accumulations of 6 to 9 inches are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 1202 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * WHAT...Light to moderate snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches are expected. * WHERE...Fort Collins and Greeley. * WHEN...Until 2 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-220000- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 1202 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches, with localized amounts up to 9 inches. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
129 WWUS45 KBOU 212155 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 255 PM MST Sun Jan 21 2018 COZ031-033>036-212300- /O.EXP.KBOU.WS.W.0001.000000T0000Z-180121T2200Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 255 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING WILL EXPIRE AT 3 PM MST THIS AFTERNOON... Light snow will continue through the evening and overnight, with an additional 1 to 4 inches expected. Gusty northwest winds will continue to create reduced visibility in blowing and drifting snow over the passes. $$ COZ046>051-220600- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 255 PM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions occurring. Travel will be very dangerous to impossible. Additional snow accumulations of 4 to 6 inches are expected. * WHERE...Portions of east central and northeast Colorado. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-220000- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 255 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 1 to 4 inches are expected, highest amounts south and east of Denver. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
951 WWUS45 KBOU 220007 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 507 PM MST Sun Jan 21 2018 COZ039>042-044-045-220115- /O.EXP.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 507 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON... Areas of light snow will continue off and on over the Front Range Urban Corridor and adjacent plains this evening. Additional accumulations will be under one more inch. $$ COZ046>051-220700- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 507 PM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions occurring. Travel will be very dangerous to impossible. Additional snow accumulations of 4 to 6 inches are expected. * WHERE...Portions of east central and northeast Colorado. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
404 WWUS45 KBOU 220659 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1159 PM MST Sun Jan 21 2018 COZ046-047-049>051-221200- /O.EXP.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ /O.NEW.KBOU.WW.Y.0006.180122T0700Z-180122T1200Z/ Limon-Southern Lincoln County-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 1159 PM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST MONDAY... ...BLIZZARD WARNING WILL EXPIRE AT MIDNIGHT MST TONIGHT... * WHAT...Snow and blowing snow expected. Plan on slippery road conditions. In addition, areas of poor visibility are expected. Total snow accumulations of up to one inch are expected. * WHERE...Limon, Southern Lincoln County, Akron, Julesburg and Holyoke. * WHEN...until 5 AM MST Monday. * ADDITIONAL DETAILS...Winds gusting as high as 45 mph will cause areas of blowing and drifting snow. Some roads across far northeast Colorado, including I-70, are closed. Conditions will slowly improve through sunrise. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ048-220800- /O.EXP.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Sterling- Including the cities of Crook, Merino, Sterling, and Peetz 1159 PM MST Sun Jan 21 2018 ...BLIZZARD WARNING WILL EXPIRE AT MIDNIGHT MST TONIGHT... Snow has ended and conditions have improved across Logan county, therefore the Blizzard Warning will be allowed to expire. Gusty north winds may produce blowing snow through the morning hours. $$
Nearby
Blizzard Warnings in Colorado, 2018Every blizzard warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.