Alert archive / Colorado / Winter Storm Warnings in 2017
Winter Storm Warning 5, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Feb 6, 2017, 4:58 AM MST for 9 counties in Colorado. It took effect at Feb 6, 2017, 9:00 PM MST. It was in force for 39 hr. 51 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
- Feb 6, 2017, 4:58 AM MST (11:58 UTC)
- In effect from
- Feb 6, 2017, 9:00 PM MST
- Expired
- Feb 8, 2017, 11:30 AM MST
- In force
- 39 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 11:56 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 |
|---|---|---|---|
| Feb 7, 1:00 PM MST | SNOW 2 | 1 Sw Eldora, CO | LAKE ELDORA SNOTEL |
| Feb 7, 1:00 PM MST | SNOW 3 | 1 Nnw Cameron Pass, CO | JOE WRIGHT SNOTEL |
| Feb 7, 1:00 PM MST | SNOW 4 | 4 Wsw Trail Ridge, CO | LAKE IRENE SNOTEL |
| Feb 7, 4:00 PM MST | SNOW 2 | Breckenridge, CO | |
| Feb 7, 4:00 PM MST | SNOW 3.8 | 1 Nnw Grand Lake, CO | |
| Feb 7, 4:00 PM MST | SNOW 4 | Keystone, CO | |
| Feb 7, 7:00 PM MST | SNOW 4 | 1 Sw Eldora, CO | LAKE ELDORA SNOTEL |
| Feb 7, 7:00 PM MST | HEAVY SNOW 9 | 4 Nnw Longs Peak, CO | BEAR LAKE SNOTEL |
| Feb 7, 8:00 PM MST | SNOW 3.5 | Breckenridge, CO | |
| Feb 8, 7:00 AM MST | SNOW 1 | 4 Wnw Conifer, CO | |
| Feb 8, 7:00 AM MST | SNOW 1.5 | Pine Junction, CO | |
| Feb 8, 11:00 AM MST | SNOW 2.5 | 2 Sse Breckenridge, CO | |
| Feb 8, 11:00 AM MST | SNOW 4.5 | 3 N Black Hawk, CO | |
| Feb 8, 11:38 AM MST | SNOW 0.7 | 10 Nne Silverthorne, CO | MIDDLE FORK CAMP SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 0.7 | 1 Ne Echo Lake, CO | ECHO LAKE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 0.7 | 7 Nw Red Feather Lakes, CO | BLACK MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 0.8 | 1 Nnw Berthoud Pass, CO | BERTHOUD SUMMIT SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 2.2 | 9 Se Weston Pass, CO | ROUGH AND TUMBLE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 2.3 | 1 Nnw Cameron Pass, CO | JOE WRIGHT SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 2.3 | 5 Ssw Glendevey, CO | RAWAH SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 2.3 | 6 Nw Silverthorne, CO | SUMMIT RANCH SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3 | 1 W Copper Mountain, CO | COPPER MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3 | 5 W Berthoud Falls, CO | JONES PASS SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3 | 8 Sse Cameron Pass, CO | PHANTOM VALLEY SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3 | 9 Ene Steamboat Springs, CO | TOWER SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3.8 | 1 Nne Rabbit Ears Pass, CO | COLUMBINE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3.8 | 1 Nw Climax, CO | FREMONT PASS SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3.8 | 5 W Green Mountain Rese, CO | ELLIOT RIDGE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 3.8 | 9 E Glendevey, CO | DEADMAN HILL SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 4.5 | 7 E Blue River, CO | MICHIGAN CREEK SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 5.2 | 6 W Arapahoe Peak, CO | HIGH LONESOME SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 5.2 | 8 Nw Glendevey, CO | ROACH SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 5.2 | 9 Sse Spicer, CO | ARAPAHO RIDGE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 5.3 | 3 Wnw Alma, CO | BUCKSKIN JOE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 5.3 | 5 Ssw Blue River, CO | HOOSIER PASS SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | SNOW 5.3 | 5 Wsw Grand Lake, CO | STILLWATER CREEK SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 6 | 3 Wnw Pingree Park, CO | HOURGLASS LAKE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 6 | 9 Sse Gould, CO | NEVER SUMMER SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 6.7 | 3 Sw Meeker Park, CO | COPELAND LAKE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 6.8 | 1 Sw Eldora, CO | LAKE ELDORA SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 6.8 | 3 Sw Ward, CO | NIWOT SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 6.8 | 9 Se Cameron Pass, CO | WILLOW PARK SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 7.5 | 1 Wnw Loveland Pass, CO | LOVELAND BASIN SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 7.5 | 5 Wsw Guanella Pass, CO | JACKWHACKER GULCH SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 7.5 | 6 E Cameron Pass, CO | LONG DRAW RESERVOIR SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 8.3 | 1 Sse Loveland Pass, CO | GRIZZLY PEAK SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 8.3 | 7 Sse Cameron Pass, CO | LAKE IRENE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 9.8 | 3 S Brainard Lake, CO | UNIVERSITY CAMP SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 11.2 | 4 S Longs Peak, CO | WILD BASIN SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 12.7 | 4 Nnw Longs Peak, CO | BEAR LAKE SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
| Feb 8, 11:38 AM MST | HEAVY SNOW 12.8 | 4 Se Mount Zirkel, CO | ZIRKEL SNOTEL SNOWFALL BETWEEN 5 PM 02/06/2017 AND 10 AM 02/08/2017 ESTIMATED USING A 7.5 TO 1 SNOW-TO-LIQUID RATIO |
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, 12.0 hours before the alert went out and 213 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
- 2883 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
520 WWUS45 KBOU 061158 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 458 AM MST MON FEB 6 2017 ...SNOW AND WINDY CONDITIONS WILL RETURN TO THE MOUNTAINS FOR THE FIRST HALF OF THE WEEK... .A POWERFUL JET WILL TRANSPORT PACIFIC MOISTURE INTO THE CENTRAL ROCKIES. SNOW WILL SLOWLY INCREASE TODAY AND THIS EVENING AS MOISTURE INCREASES. WIDESPREAD SNOW IS EXPECTED TO DEVELOP LATE TONIGHT AND CONTINUE INTO WEDNESDAY. THE HEAVIEST SNOW AND STRONGEST WINDS ARE EXPECTED TO OCCUR LATE TUESDAY INTO EARLY WEDNESDAY. SIGNIFICANT BLOWING SNOW IS EXPECTED OVER THE RIDGES AND THROUGH THE PASSES WHERE GUSTS TO 60 MPH WILL BE POSSIBLE. ROADS ARE EXPECTED TO BECOME SNOW COVERED AND SLIPPERY. TRAVEL WILL BECOME HAZARDOUS IN THE MOUNTAINS LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY. COZ031-033-034-062000- /O.UPG.KBOU.WS.A.0005.170207T0400Z-170209T0100Z/ /O.NEW.KBOU.WS.W.0005.170207T0400Z-170209T0100Z/ WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- 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 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, AND WINTER PARK 458 AM MST MON FEB 6 2017 ...WINTER STORM WARNING IN EFFECT FROM 9 PM THIS EVENING TO 6 PM MST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW, WHICH IS IN EFFECT FROM 9 PM THIS EVENING TO 6 PM MST WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...SNOW INCREASE TODAY AND BECOME WIDESPREAD TONIGHT. SNOW WILL CONTINUE THROUGH TUESDAY AND TAPER OFF LATE WEDNESDAY. * SNOW ACCUMULATIONS...8 TO 16 INCHES ARE EXPECTED. * WIND/VISIBILITY...WINDS OF 25 TO 35 MPH WITH GUSTS TO 60 MPH WILL DROP VISIBILITY TO A QUARTER MILE OR LESS AT TIMES IN BLOWING SNOW. * IMPACTS...HEAVY SNOW AND STRONG WINDS WILL CREATE HAZARDOUS WINTER CONDITIONS WITH BLOWING AND DRIFTING SNOW. ROADS ARE EXPECTED TO BECOME ICY AND SNOW PACKED TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ALTER YOUR TRAVEL PLANS IF POSSIBLE. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
8 follow-up statements
184 WWUS45 KBOU 061947 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1247 PM MST MON FEB 6 2017 ...SNOW AND WINDY CONDITIONS OVER THE MOUNTAINS FOR THE FIRST HALF OF THE WEEK... .A POWERFUL JET WILL TRANSPORT PACIFIC MOISTURE INTO THE CENTRAL ROCKIES. SNOW WILL SLOWLY INCREASE INTO THIS EVENING AS MOISTURE INCREASES. WIDESPREAD SNOW IS EXPECTED TO DEVELOP LATE TONIGHT AND CONTINUE INTO WEDNESDAY. THE HEAVIEST SNOW AND STRONGEST WINDS ARE EXPECTED TO OCCUR LATE TUESDAY INTO EARLY WEDNESDAY. SIGNIFICANT BLOWING SNOW IS EXPECTED OVER THE RIDGES AND THROUGH THE PASSES WHERE GUSTS TO 60 MPH WILL BE POSSIBLE. ROADS ARE EXPECTED TO BECOME SNOW COVERED AND SLIPPERY. TRAVEL WILL BECOME HAZARDOUS IN THE MOUNTAINS LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY. COZ031-033-034-070400- /O.CON.KBOU.WS.W.0005.170207T0400Z-170209T0100Z/ WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- 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 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, AND WINTER PARK 1247 PM MST MON FEB 6 2017 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 6 PM MST WEDNESDAY... * TIMING...SNOW WILL BE INCREASING INTO THIS EVENING AND BECOME WIDESPREAD TONIGHT. SNOW WILL CONTINUE THROUGH TUESDAY AND TAPER OFF LATE WEDNESDAY. * SNOW ACCUMULATIONS...8 TO 16 INCHES ARE EXPECTED, WITH UPWARDS OF 12 TO 20 INCHES IN ROCKY MOUNTAIN NATIONAL PARK AND THE MOUNTAINS NORTH OF RABBIT EARS PASS AND . * WIND/VISIBILITY...WINDS OF 25 TO 35 MPH WITH GUSTS TO 60 MPH WILL DROP VISIBILITY TO A QUARTER MILE OR LESS AT TIMES IN BLOWING SNOW. * IMPACTS...HEAVY SNOW AND STRONG WINDS WILL CREATE HAZARDOUS WINTER CONDITIONS WITH BLOWING AND DRIFTING SNOW. ROADS ARE EXPECTED TO BECOME ICY AND SNOW PACKED TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ALTER YOUR TRAVEL PLANS IF POSSIBLE. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
601 WWUS45 KBOU 070358 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 858 PM MST MON FEB 6 2017 ...SNOW AND WINDY CONDITIONS OVER THE MOUNTAINS FOR THE FIRST HALF OF THE WEEK... .A POWERFUL JET WILL TRANSPORT PACIFIC MOISTURE INTO THE CENTRAL ROCKIES. SNOW WILL INCREASE AFTER MIDNIGHT IN THE MOUNTAINS NORTH OF I-70 AND SOUTH OF I-70 LATE TONIGHT. WIDESPREAD HEAVIER SNOW IS EXPECTED TUESDAY AFTERNOON INTO EARLY WEDNESDAY ALONG WITH STRONG WINDS. SIGNIFICANT BLOWING SNOW IS EXPECTED OVER THE RIDGES AND THROUGH THE PASSES WHERE GUSTS TO 60 MPH WILL BE POSSIBLE. ROADS ARE EXPECTED TO BECOME SNOW COVERED AND SLIPPERY. TRAVEL WILL BECOME HAZARDOUS IN THE MOUNTAINS LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY. COZ031-033-034-071200- /O.CON.KBOU.WS.W.0005.170207T0400Z-170209T0100Z/ WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- 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- 858 PM MST MON FEB 6 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST WEDNESDAY... * TIMING...SNOW WILL BE INCREASING ATER MIDNIGHT NORTH OF I-70 AND SOUTH OF I-70 LATE TONIGHT. SNOW WILL CONTINUE THROUGH TUESDAY AND TAPER OFF LATE WEDNESDAY. * SNOW ACCUMULATIONS...8 TO 16 INCHES ARE EXPECTED, WITH UPWARDS OF 12 TO 20 INCHES IN ROCKY MOUNTAIN NATIONAL PARK AND THE MOUNTAINS NORTH OF RABBIT EARS PASS AND . * WIND/VISIBILITY...WINDS OF 25 TO 35 MPH WITH GUSTS TO 60 MPH WILL DROP VISIBILITY TO A QUARTER MILE OR LESS AT TIMES IN BLOWING SNOW. * IMPACTS...HEAVY SNOW AND STRONG WINDS WILL CREATE HAZARDOUS WINTER CONDITIONS WITH BLOWING AND DRIFTING SNOW. ROADS ARE EXPECTED TO BECOME ICY AND SNOW PACKED OVERNIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ALTER YOUR TRAVEL PLANS IF POSSIBLE. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
832 WWUS45 KBOU 071100 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 400 AM MST Tue Feb 7 2017 ...SNOW AND WINDY CONDITIONS OVER THE MOUNTAINS THROUGH WEDNESDAY... .A powerful jet will transport Pacific moisture into the Central Rockies. Snow will increase today and become heavy at times late this afternoon and tonight. It will become very windy by this evening with gusts to 60 mph. Significant blowing snow is expected over the ridges and through the passes. Roads are expected to become snow covered and slippery. Travel will become hazardous in the mountains later today and continue through Wednesday. COZ031-033-034-072300- /O.CON.KBOU.WS.W.0005.000000T0000Z-170209T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- 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 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, and Winter Park 400 AM MST Tue Feb 7 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST WEDNESDAY... * TIMING...Snow will increase today and continue through Wednesday. Snow may be heavy at times late this afternoon and tonight. * SNOW ACCUMULATIONS...8 TO 16 inches are expected. Up to 12 to 20 inches will be possible in Rocky Mountain National Park and the mountains north of Rabbit Ears Pass. * WIND/VISIBILITY...winds of 25 to 35 mph with gusts to 60 mph will drop visibility to a quarter mile or less at times in blowing snow. * IMPACTS...Heavy snow and strong winds will create hazardous winter conditions with blowing and drifting snow. Roads are expected to become icy and snow packed. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow and blowing snow are forecast to make travel dangerous. If you must travel...keep an extra flashlight...food...and water in your vehicle in case of an emergency. && $$
078 WWUS45 KBOU 071853 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 1153 AM MST Tue Feb 7 2017 ...SNOW AND WINDY CONDITIONS OVER THE MOUNTAINS THROUGH WEDNESDAY... .A powerful jet stream will continue transporting Pacific moisture into the Central Rockies today and tonight. Snow has moved into the central Colorado mountains this morning which will continue this afternoon and tonight. Ski areas in Summit County have received one to three inches of snow this morning. Winds will also be increasing this evening with gusts to 60 mph. Significant blowing snow is expected to develop over the ridges and through the passes. Roads are expected to become snow covered and slippery. Travel may become hazardous in the mountains later today and continue through Wednesday. COZ031-033-034-080400- /O.CON.KBOU.WS.W.0005.000000T0000Z-170209T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- 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 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, and Winter Park 1153 AM MST Tue Feb 7 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST WEDNESDAY... * TIMING...Snow will increase this afternoon and continue through Wednesday. Snow may be heavy at times late this afternoon and tonight. * SNOW ACCUMULATIONS...10 TO 18 inches are expected, heaviest in Rocky Mountain National Park. * WIND/VISIBILITY...Winds of 25 to 35 mph with gusts to 60 mph will drop visibility to a quarter mile or less at times in blowing snow. * IMPACTS...Heavy snow and strong winds will create hazardous winter conditions with blowing and drifting snow. Roads are expected to become icy and snow packed. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow and blowing snow are forecast to make travel dangerous. If you must travel...keep an extra flashlight...food...and water in your vehicle in case of an emergency. && $$
366 WWUS45 KBOU 072312 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 412 PM MST Tue Feb 7 2017 ...SNOW AND WIND IN THE MOUNTAINS OVERNIGHT... .A powerful jet stream will remain over Colorado tonight, transporting Pacific moisture into the Central Rockies. Light to moderate snow is expected to continue in the Colorado mountains through much of tonight. Ski areas in Summit County have received from 3 to 6 inches of snow today. Winds are expected to increase this evening with gusts to 60 mph. Significant blowing snow is expected to develop over the ridges and through the passes. Roads and highways could be snow covered and slippery at times. Travel may become hazardous in the mountains overnight. COZ031-033-034-080715- /O.CON.KBOU.WS.W.0005.000000T0000Z-170209T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- 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 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, and Winter Park 412 PM MST Tue Feb 7 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST WEDNESDAY... * TIMING...Snow will continue through tonight and Wednesday. Snow may be heavy at times overnight. * SNOW ACCUMULATIONS...8 TO 14 inches are expected, heaviest in Rocky Mountain National Park. * WIND/VISIBILITY...Winds of 25 to 35 mph with gusts to 60 mph will drop visibility to a quarter mile or less at times in blowing snow. * IMPACTS...Moderate to heavy snow and strong winds will create hazardous winter conditions with blowing and drifting snow. Roads are expected to become icy and snow packed at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow and blowing snow are forecast to make travel dangerous. If you must travel...keep an extra flashlight...food...and water in your vehicle in case of an emergency. && $$
764 WWUS45 KBOU 080427 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 927 PM MST Tue Feb 7 2017 ...SNOW AND WIND IN THE MOUNTAINS OVERNIGHT... .A powerful jet stream will remain over Colorado tonight into Wednesday morning. There is plenty of Pacific moisture associated with it. Light and moderate snow is expected to continue in the Colorado mountains tonight. Strong winds are expected overnight with significant blowing snow. Roads and highways will be snow covered and slippery. Travel will be hazardous in the mountains overnight into Wednesday. COZ031-033-034-081230- /O.CON.KBOU.WS.W.0005.000000T0000Z-170209T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- 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 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, and Winter Park 927 PM MST Tue Feb 7 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST WEDNESDAY... * TIMING...Snow will continue tonight and Wednesday. Snow may be heavy at times overnight. * SNOW ACCUMULATIONS...8 TO 14 inches are expected, heaviest in Rocky Mountain National Park. * WIND/VISIBILITY...Winds of 25 to 40 mph with gusts to 60 mph will drop visibility to a quarter mile or less at times in blowing snow. * IMPACTS...Snow and strong winds will create hazardous winter conditions with blowing and drifting snow. Roads are expected to become icy and snow packed at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow and blowing snow are forecast to make travel dangerous. If you must travel...keep an extra flashlight...food...and water in your vehicle in case of an emergency. && $$
440 WWUS45 KBOU 081159 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 459 AM MST Wed Feb 8 2017 COZ031-033-034-082200- /O.CON.KBOU.WS.W.0005.000000T0000Z-170209T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, and Winter Park 459 AM MST Wed Feb 8 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * TIMING...Snow will slowly decrease through the day. * SNOW ACCUMULATIONS...Up to 4 inches of new snow is expected today. * WIND/VISIBILITY...Winds of 25 to 40 mph with gusts to 60 mph will drop visibility below a quarter mile or less at times in blowing snow. * IMPACTS...Snow and strong winds will create hazardous winter conditions with blowing and drifting snow. Roads are icy and snow packed in places. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow and blowing snow are forecast to make travel dangerous. If you must travel...keep an extra flashlight...food...and water in your vehicle in case of an emergency. && $$
197 WWUS45 KBOU 081830 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 1130 AM MST Wed Feb 8 2017 COZ031-033-034-081930- /O.CAN.KBOU.WS.W.0005.000000T0000Z-170209T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- 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 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, and Winter Park 1130 AM MST Wed Feb 8 2017 ...WINTER STORM WARNING IS CANCELLED... The National Weather Service in Denver has cancelled the Winter Storm Warning. Snow showers and areas of blowing snow will gradually decrease through the afternoon. Additional snow accumulations in most areas will be an inch or less. Travel conditions will improve significantly. $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this winter storm warning went out at Feb 6, 4:05 AM MST, 53 minutes earlier.
Area forecast discussion, Feb 6, 4:05 AM MST, 53 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 405 AM MST Mon Feb 6 2017 .SHORT TERM...(Today and tonight) Issued at 326 AM MST Mon Feb 6 2017 An increasing zonal flow aloft can be expected today into tonight. There will be some weak mid level qg ascent associated with an embedded short wave this morning, then subsidence this afternoon and evening, then back to increasing qg ascent late tonight ahead of the next system. NAM12 spatial cross-sections indicate deepening moisture this afternoon, but increasing mid level stability as well. Overall expected light snow through this evening, then should start to see snow pickup after midnight. Have opted to upgrade the Winter Storm Watch to a Warning but with the heaviest snowfall expected to occur on Tuesday. Strong winds above timberline and in the foothills above 8 thousand feet. The mountain wave itself does not amplify very much tonight so expect the strongest gusts to be in those higher locations. Could still see some gusts in the 40-50 mph near the base of the foothills tonight. Across the urban corridor and northeast plains, another mild day with downslope flow in place. Variable mid and upper level cloudiness. Windy as well with west/northwest winds developing this afternoon. Some concern over eastern Elbert and Lincoln counties regarding Red Flag Criteria. Combination of gusty winds and mild temperature could drop the relative humidities into the teens for a brief time this afternoon. Marginal but something for the day shift to keep an eye on. .LONG TERM...(Tuesday through Sunday) Issued at 326 AM MST Mon Feb 6 2017 Tuesday through Wednesday, A strong westerly flow aloft will transport Pacific moisture into the Central Rockies. A strong jet along with orographic lift should produce widespread snow in the mountains. Temperatures will be mild Tuesday with the snow level around 9000 feet. So lower valley locations could see rain into the early evening. Cold air advection Tuesday night into Wednesday will change any rain to snow in the valleys. It will also improve the orographic lift and increase the liquid to snow ratio. Snow will decrease Wednesday and end most areas by Wednesday afternoon or early evening. For the Front Range and eastern plains, tricky temperature forecast for both days. A lee side surface trough is expected to keep winds westerly Tuesday. A cold front will back southwest late Tuesday. If the westerly flow prevails as expected, highs will be in the upper 50s to lower 60s. Temperatures will quickly fall behind the front. Lift from the front, steep lapse rates, and lift from the jet is expected to produce isolated to scattered rain and snow showers. Tuesday night and possibly into Wednesday. Little to no snow accumulation is expected. Models showing the cold air retreating Wednesday with mild temperatures by afternoon. Highs on Wednesday be in the 30s under the cold air or as high as the lower 60s if the cold air fully retreats. An upper level ridge building over the Great Basin Wednesday will bring dry conditions starting Wednesday night. This ridge will shift east across the region Thursday and Friday bringing very mild temperatures. Highs Thursday and Friday are expected to be in the 60s across northeast Colorado. It will be dry in the mountains through Thursday night. Moisture in advance of the next Pacific system may bring snow for late Friday. Moisture will increase across the area late Friday and into Saturday. The GFS and ECMWF show an upper level trough moving onto the California coast Friday night and into the Great Basin Saturday. Then it stalls and the energy splits. One piece moves across the Central Rockies and the other becomes a closed low over the Desert Southwest. This is expected to bring cooler temperatures for the weekend. There will also be a chance for precipitation with the best chance being over the mountains and along the Front Range. Precipitation may start off as rain across the plains before cold enough air arrives to change the rain to snow. At this time, the best chance for precipitation looks be Saturday evening. && .AVIATION...(For the 12Z TAFS through 12Z Tuesday morning) Issued at 326 AM MST Mon Feb 6 2017 VFR conditions expected over the next 24 hours. west/southwest winds this morning should become west/northwesterly by early aftn, around 20Z. The wind should start transitions back to southwesterly at KDEN and KAPA this evening. Could see primarily westerly winds at KBJC with some gusts to 35-45 kts 09z-12z Tuesday. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning from 9 PM this evening to 6 PM MST Wednesday for COZ031-033-034. && SHORT TERM...Cooper LONG TERM...Meier AVIATION...Cooper
Hazardous weather outlook, Feb 6, 4:58 AM MST, 0 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 458 AM MST MON FEB 6 2017 COZ030>051-071200- JACKSON COUNTY BELOW 9000 FEET- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 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-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- CENTRAL AND SOUTHEAST PARK COUNTY- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 458 AM MST MON FEB 6 2017 ...WINTER STORM WARNING IN EFFECT FOR THE NORTH CENTRAL MOUNTAINS FROM 9 PM THIS EVENING THROUGH 6 PM WEDNESDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT LIGHT SNOW WILL DEVELOP IN THE MOUNTAINS BY THIS AFTERNOON AND INCREASE OVERNIGHT. STRONG WIND GUSTS WILL OCCUR ABOVE TIMBERLINE TONIGHT AND WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. IT WILL BE DRY AND MILD ACROSS THE LOWER ELEVATIONS WITH WEST TO NORTHWEST WINDS IN THE 10 TO 20 MPH RANGE THIS AFTERNOON WITH SOME GUSTS TO 35 MPH. HIGHS THIS AFTERNOON WILL RANGE FROM THE UPPER 50S TO MIDDLE 60S. A MOIST WESTERLY FLOW ALOFT WILL BRING SNOW TO THE MOUNTAINS THROUGH TONIGHT, WITH DOWNSLOPE CONDITIONS PRODUCING DRY AND MILD WEATHER ACROSS THE NORTHEAST PLAINS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SNOW WILL BECOME WIDESPREAD TUESDAY AND CONTINUE INTO WEDNESDAY TO CREATE HAZARDOUS WINTER CONDITIONS IN THE MOUNTAINS. SNOW ACCUMULATIONS OF 8 TO 16 INCHES ARE EXPECTED BY WEDNESDAY AFTERNOON. WINDS GUSTING UP TO 60 MPH WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW AND CAUSE ROADS TO BECOME ICY AND SNOWPACKED. MOUNTAIN SNOW WILL END WEDNESDAY NIGHT. THE NEXT SYSTEM WILL AFFECT THE AREA LATE FRIDAY AND SATURDAY. ACROSS THE PLAINS, THERE WILL BE A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS TUESDAY NIGHT AND WEDNESDAY ALONG WITH STRONG WINDS WEDNESDAY. TEMPERATURES WILL BE ABOVE SEASONAL NORMALS, ESPECIALLY THURSDAY AND FRIDAY IN MOST AREAS. THE NEXT CHANCE FOR PRECIPITATION WILL COME SATURDAY WITH THE NEXT PACIFIC SYSTEM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 8:37 AM MST | Red Flag Warning | BOU | Elbert, Lincoln | 8 hr |
Nearby
Winter Storm Warnings in Colorado, 2017Every winter storm warning in 2017
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.