Alert archive / Colorado / Winter Storm Warnings in 2011
Winter Storm Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at May 11, 2011, 10:46 AM MDT for 10 counties in Colorado. It was in force for 19 hr. 18 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
- May 11, 2011, 10:46 AM MDT (16:46 UTC)
- Expired
- May 12, 2011, 6:00 AM MDT
- In force
- 19 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas 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), 94 km from the middle of the area, began a volume at 16:48 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 |
|---|---|---|---|
| May 11, 11:15 AM MDT | SNOW 4 | Gold Hill, CO | |
| May 11, 11:15 AM MDT | SNOW 5.7 | 3 W Jamestown, CO | |
| May 11, 11:19 AM MDT | SNOW 6 | 4 Ene Nederland, CO | |
| May 11, 11:27 AM MDT | HEAVY SNOW 12 | Berthoud, CO | |
| May 11, 11:27 AM MDT | SNOW 12 | Berthoud Pass, CO | |
| May 11, 11:27 AM MDT | HEAVY SNOW 12 | Berthoud Pass, CO | |
| May 11, 12:19 PM MDT | HEAVY SNOW 7.5 | 2 E Antero Junction, CO | |
| May 11, 2:15 PM MDT | HEAVY SNOW 8 | 4 Ene Nederland, CO | |
| May 11, 2:23 PM MDT | HEAVY SNOW 8.5 | 3 N Bailey, CO | |
| May 11, 2:24 PM MDT | SNOW 5 | Fairplay, CO | |
| May 11, 5:42 PM MDT | HEAVY SNOW 7.3 | 1 Se Breckenridge, CO | |
| May 11, 7:00 PM MDT | HEAVY SNOW 18 | 4 Sse Pinecliffe, CO | |
| May 11, 7:02 PM MDT | HEAVY SNOW 10 | 13 Nw Golden, CO | |
| May 11, 8:05 PM MDT | HEAVY SNOW 9.5 | 4 Ene Nederland, CO | |
| May 11, 9:30 PM MDT | HEAVY SNOW 10.9 | 3 W Jamestown, CO | |
| May 11, 9:50 PM MDT | HEAVY SNOW 10 | 4 E Nederland, CO | |
| May 11, 10:57 PM MDT | HEAVY SNOW 14.7 | 5 Sse Pinecliffe, CO | COAL CREEK CANYON |
| May 12, 5:20 AM MDT | HEAVY SNOW 11.5 | 6 Sw Evergreen, CO | HEAVY WET SNOW |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 4.8 hours before the alert went out and 206 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
- 629 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 583 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
101 WWUS45 KBOU 111646 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1046 AM MDT WED MAY 11 2011 ...SNOW TO CONTINUE ACROSS MOUNTAINS AND ALONG EASTERN SLOPES OF THE FRONT RANGE THIS AFTERNOON THROUGH WEDNESDAY... .AN UPPER LEVEL STORM SYSTEM WILL MOVE INTO SOUTHEAST COLORADO TODAY AND BECOME NEARLY STATIONARY TONIGHT BEFORE MOVING INTO WESTERN KANSAS BY THURSDAY. DEEPENING NORTHEASTERLY FLOW INTO TO THE REGION WILL ALLOW FOR SIGNIFICANT SNOWFALL IN THE MOUNTAINS ON EAST FACING SLOPES AND OVER THE FOOTHILLS THROUGH WEDNESDAY AFTERNOON. CURRENT INDICATIONS SHOW THE SNOW MAY CONTINUE WEDNESDAY NIGHT INTO EARLY THURSDAY AS WELL WITH SEVERAL MORE INCHES POSSIBLE. MEANWHILE...ACCUMULATING SNOWFALL COULD ALSO OCCUR OVER THE PALMER DIVIDE TONIGHT INTO THURSDAY MORNING. COZ035-036-120000- /O.UPG.KBOU.WW.Y.0025.000000T0000Z-110512T0000Z/ /O.NEW.KBOU.WS.W.0009.110511T1646Z-110512T0000Z/ 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- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK 1046 AM MDT WED MAY 11 2011 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 6 PM MDT THIS EVENING. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THIS AFTERNOON....GRADUALLY DECREASING THIS EVENING. * ACCUMULATION...STORM TOTALS OF 6 TO 14 INCHES CAN BE EXPECTED BY THIS EVENING...WITH THE HEAVIEST AMOUNTS ABOVE 7500 FEET. * IMPACTS...ROADS WILL BE SLUSHY AND ICY...ESPECIALLY ABOVE 7500 FEET. THE WET AND HEAVY SNOW MAY BREAK TREE LIMBS AND DAMAGE TENDER BUDDING VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ033-034-120100- /O.UPG.KBOU.WW.Y.0025.000000T0000Z-110512T0000Z/ /O.NEW.KBOU.WS.W.0009.110511T1646Z-110512T1200Z/ SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE... EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL... INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS... WILLIAMS FORK MOUNTAINS...WINTER PARK 1046 AM MDT WED MAY 11 2011 ...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MDT THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 6 AM MDT THURSDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THROUGH TONIGHT. THE HEAVIEST SNOW WILL OCCUR ALONG EAST FACING SLOPES. * ACCUMULATION...STORM TOTALS OF 8 TO 16 INCHES CAN BE EXPECTED BY THURSDAY MORNING. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW COULD BREAK TREE LIMBS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ LESZCYNSKI
5 follow-up statements
097 WWUS45 KBOU 111907 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 107 PM MDT WED MAY 11 2011 ...SNOW TO CONTINUE ACROSS MOUNTAINS THIS AFTERNOON THROUGH THURSDAY AND ALONG EASTERN SLOPES OF THE FRONT RANGE AND PARK THROUGH THIS EVENING... .AN UPPER LEVEL STORM SYSTEM WILL CONTINUE TO TRACK ACROSS SOUTHEAST COLORADO THIS AFTERNOON AND BECOME NEARLY STATIONARY TONIGHT BEFORE MOVING INTO WESTERN KANSAS THURSDAY. DEEPENING NORTHEAST FLOW INTO TO THE REGION WILL ALLOW FOR SIGNIFICANT SNOWFALL IN THE MOUNTAINS ON EAST FACING SLOPES THROUGH THURSDAY AND ALONG THE FOOTHILLS AND ACROSS SOUTH PARK THROUGH THIS EVENING. COZ037-120300- /O.EXB.KBOU.WS.W.0009.000000T0000Z-110512T0300Z/ CENTRAL AND SOUTHEAST PARK COUNTY- INCLUDING THE CITIES OF...FAIRPLAY...HARTSEL...LAKE GEORGE... SOUTH PARK 107 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 9 PM MDT THIS EVENING. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THIS AFTERNOON....GRADUALLY DECREASING THIS EVENING. * ACCUMULATION...STORM TOTALS OF 6 TO 12 INCHES CAN BE EXPECTED BY THIS EVENING. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW MAY BREAK TREE LIMBS AND DAMAGE TENDER BUDDING VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ033-034-120315- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T1200Z/ SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET- INCLUDING THE CITIES OF...CAMERON PASS... LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE... ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS... BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE... EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL... INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS... WILLIAMS FORK MOUNTAINS...WINTER PARK 107 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THROUGH TONIGHT. THE HEAVIEST SNOW WILL OCCUR ALONG EAST FACING SLOPES. * ACCUMULATION...STORM TOTALS OF 8 TO 16 INCHES CAN BE EXPECTED BY THURSDAY MORNING. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW COULD BREAK TREE LIMBS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ035-036-120000- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T0000Z/ 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- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK 107 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THIS AFTERNOON....GRADUALLY DECREASING THIS EVENING. * ACCUMULATION...STORM TOTALS OF 6 TO 14 INCHES CAN BE EXPECTED BY THIS EVENING...WITH THE HEAVIEST AMOUNTS ABOVE 7500 FEET. * IMPACTS...ROADS WILL BE SLUSHY AND ICY...ESPECIALLY ABOVE 7500 FEET. THE WET AND HEAVY SNOW MAY BREAK TREE LIMBS AND DAMAGE TENDER BUDDING VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ LESZCYNSKI
982 WWUS45 KBOU 111914 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 114 PM MDT WED MAY 11 2011 ...SNOW TO CONTINUE ACROSS MOUNTAINS THIS AFTERNOON THROUGH THURSDAY AND ALONG EASTERN SLOPES OF THE FRONT RANGE AND SOUTH PARK THROUGH THIS EVENING... .AN UPPER LEVEL STORM SYSTEM WILL CONTINUE TO TRACK ACROSS SOUTHEAST COLORADO THIS AFTERNOON AND BECOME NEARLY STATIONARY TONIGHT BEFORE MOVING INTO WESTERN KANSAS THURSDAY. DEEPENING NORTHEAST FLOW INTO TO THE REGION WILL ALLOW FOR SIGNIFICANT SNOWFALL IN THE MOUNTAINS ON EAST FACING SLOPES THROUGH THURSDAY AND ALONG THE FOOTHILLS AND ACROSS SOUTH PARK THROUGH THIS EVENING. COZ037-120300- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T0300Z/ CENTRAL AND SOUTHEAST PARK COUNTY- INCLUDING THE CITIES OF...FAIRPLAY...HARTSEL...LAKE GEORGE... SOUTH PARK 114 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THIS AFTERNOON....GRADUALLY DECREASING THIS EVENING. * ACCUMULATION...STORM TOTALS OF 6 TO 12 INCHES CAN BE EXPECTED BY THIS EVENING. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW MAY BREAK TREE LIMBS AND DAMAGE TENDER BUDDING VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ033-034-120315- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T1200Z/ 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...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 114 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THROUGH TONIGHT. THE HEAVIEST SNOW WILL OCCUR ALONG EAST FACING SLOPES. * ACCUMULATION...STORM TOTALS OF 8 TO 16 INCHES CAN BE EXPECTED BY THURSDAY MORNING. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW COULD BREAK TREE LIMBS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ035-036-120000- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T0000Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK 114 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THIS AFTERNOON....GRADUALLY DECREASING THIS EVENING. * ACCUMULATION...STORM TOTALS OF 6 TO 14 INCHES CAN BE EXPECTED BY THIS EVENING...WITH THE HEAVIEST AMOUNTS ABOVE 7500 FEET. * IMPACTS...ROADS WILL BE SLUSHY AND ICY...ESPECIALLY ABOVE 7500 FEET. THE WET AND HEAVY SNOW MAY BREAK TREE LIMBS AND DAMAGE TENDER BUDDING VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ LESZCYNSKI
500 WWUS45 KBOU 120023 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 623 PM MDT WED MAY 11 2011 ...SNOW CONTINUING IN PARTS OF THE COLORADO FRONT RANGE... .A STORM SYSTEM WILL CONTINUE TO TRACK SLOWLY EASTWARD FROM SOUTHEAST COLORADO TONIGHT INTO WESTERN KANSAS ON THURSDAY. MOIST AND UNSTABLE AIR WILL CONTINUE TO PRODUCE AREAS OF SNOW IN THE MOUNTAINS...ESPECIALLY SOUTH OF INTERSTATE 70. PERIODS OF HEAVY SNOW SHOWERS ARE ALSO EXPECTED IN THE PALMER DIVIDE AREA BETWEEN DENVER AND COLORADO SPRINGS TONIGHT. WARM TEMPERATURES WILL LIMIT THE IMPACT ON DRIVING CONDITIONS...BUT SLUSHY ROADS AND LOW VISIBILITIES CAN BE EXPECTED IN THE AREAS OF HEAVY SNOW. COZ035-036-120130- /O.EXP.KBOU.WS.W.0009.000000T0000Z-110512T0000Z/ 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- INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND... RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN... GEORGETOWN...IDAHO SPRINGS...WESTCREEK 623 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING HAS EXPIRED... THE WINTER STORM WARNING IS NO LONGER IN EFFECT. SNOW SHOWERS ARE STILL EXPECTED OVERNIGHT...BUT THE SNOW WILL NOT BE AS HEAVY AS EARLIER TODAY. ADDITIONAL ACCUMULATIONS OF UP TO 4 INCHES ARE EXPECTED...WITH THE HEAVIER AMOUNTS MAINLY SOUTH OF INTERSTATE 70. $$ COZ037-120300- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T0300Z/ CENTRAL AND SOUTHEAST PARK COUNTY- INCLUDING THE CITIES OF...FAIRPLAY...HARTSEL...LAKE GEORGE... SOUTH PARK 623 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING. * TIMING...SNOW SHOWERS WILL CONTINUE THIS EVENING...BUT WILL BE GRADUALLY DECREASING. * ACCUMULATION...STORM TOTALS OF 6 TO 12 INCHES CAN BE EXPECTED BY THIS EVENING. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW MAY BREAK TREE LIMBS AND DAMAGE TENDER BUDDING VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ033-034-120830- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T1200Z/ 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...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 623 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THROUGH TONIGHT. THE HEAVIEST SNOW WILL OCCUR ALONG EAST FACING SLOPES. * ACCUMULATION...STORM TOTALS OF 8 TO 16 INCHES CAN BE EXPECTED BY THURSDAY MORNING. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW COULD BREAK TREE LIMBS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ041-120830- /O.NEW.KBOU.WW.Y.0026.110512T0023Z-110512T1200Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 623 PM MDT WED MAY 11 2011 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT THURSDAY... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 6 AM MDT THURSDAY. * TIMING...SNOW SHOWERS ARE EXPECTED DURING THE NIGHT AND WILL BE HEAVY AT TIMES. * ACCUMULATION/WIND...STORM TOTAL OF 2 TO 8 INCHES BY LATE TONIGHT...WITH THE HEAVIEST AMOUNTS SOUTH OF HIGHWAY 86. NORTH WINDS AT 15 TO 30 MPH WILL CAUSE SOME DRIFTING OF THE SNOW. * IMPACTS...ROADS WILL BECOME SLUSHY. LOW VISIBILITY CAN BE EXPECTED IN AREAS OF HEAVY SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW...BLOWING SNOW...OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ GIMMESTAD
395 WWUS45 KBOU 120344 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 944 PM MDT WED MAY 11 2011 ...SNOW CONTINUING IN PARTS OF THE COLORADO FRONT RANGE... .A STORM SYSTEM WILL CONTINUE TO TRACK SLOWLY EASTWARD FROM SOUTHEAST COLORADO TONIGHT INTO WESTERN KANSAS ON THURSDAY. MOIST AND UNSTABLE AIR WILL CONTINUE TO PRODUCE AREAS OF SNOW IN THE MOUNTAINS...MAINLY ON THE EAST SLOPES. AFTER A BREAK THIS EVENING...PERIODS OF HEAVY SNOW SHOWERS ARE EXPECTED TO REDEVELOP IN THE PALMER DIVIDE AREA BETWEEN DENVER AND COLORADO SPRINGS DURING THE EARLY MORNING HOURS. WARM TEMPERATURES WILL LIMIT THE IMPACT ON DRIVING CONDITIONS...BUT SLUSHY ROADS AND LOW VISIBILITIES CAN BE EXPECTED IN THE AREAS OF HEAVY SNOW. STORM TOTAL SNOWFALL AMOUNTS AS OF WEDNESDAY EVENING RANGED FROM 4 TO 12 INCHES WITH ONE REPORT OF 18 INCHES NEAR GOLDEN GATE CANYON STATE PARK IN THE NORTHWEST CORNER OF JEFFERSON COUNTY. IN ELBERT COUNTY SNOWFALL AMOUNTS OF 3 TO 6 INCHES WERE REPORTED AT ELEVATIONS ABOVE 6500 FEET. COZ033-034-121200- /O.CON.KBOU.WS.W.0009.000000T0000Z-110512T1200Z/ 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...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 944 PM MDT WED MAY 11 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY. * TIMING...SNOW SHOWERS...HEAVY AT TIMES...WILL CONTINUE THROUGH TONIGHT. THE HEAVIEST SNOW WILL OCCUR ALONG EAST FACING SLOPES. * ACCUMULATION...STORM TOTALS OF 8 TO 16 INCHES CAN BE EXPECTED BY THURSDAY MORNING...WITH LOCALLY HIGHER AMOUNTS ON THE EAST SLOPES OF THE FRONT RANGE. * IMPACTS...ROADS WILL BE SLUSHY AND ICY. THE WET AND HEAVY SNOW COULD BREAK TREE LIMBS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WARNING MEANS HAZARDOUS WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. SIGNIFICANT SNOW ACCUMULATIONS ARE OCCURRING OR EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ COZ041-121200- /O.CON.KBOU.WW.Y.0026.000000T0000Z-110512T1200Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 944 PM MDT WED MAY 11 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY. * TIMING...SNOW SHOWERS WILL REDEVELOP AND WILL BE HEAVY AT TIMES... THEN DIMINISH AROUND SUNRISE. * ACCUMULATION/WIND...STORM TOTAL OF 2 TO 8 INCHES BY LATE TONIGHT...WITH THE HEAVIEST AMOUNTS SOUTH OF HIGHWAY 86. NORTH WINDS AT 15 TO 30 MPH WILL CAUSE SOME DRIFTING OF THE SNOW. * IMPACTS...ROADS WILL BECOME SLUSHY. LOW VISIBILITY CAN BE EXPECTED IN AREAS OF HEAVY SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT SNOW...BLOWING SNOW...OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ GIMMESTAD
873 WWUS45 KBOU 121207 WSWBOU URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 607 AM MDT THU MAY 12 2011 COZ033-034-121315- /O.EXP.KBOU.WS.W.0009.000000T0000Z-110512T1200Z/ 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...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 607 AM MDT THU MAY 12 2011 ...WINTER STORM WARNING WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING FOR THE NORTH CENTRAL COLORADO MOUNTAINS... THE WINTER STORM WARNING WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING. SNOWFALL WILL CONTINUE TO DECREASE IN THE MOUNTAINS OF NORTH CENTRAL COLORADO THIS MORNING. MOST OF THIS SNOWFALL WILL BE LIGHT AND ANY ADDITIONAL SNOW ACCUMULATION SHOULD BE CONFINED TO THE NORTH AND NORTHWEST FACING MOUNTAIN SLOPES ABOVE 11 THOUSAND FEET AND ON THE HIGH MOUNTAIN PASSES. ROADS ON THE HIGH PASSES MAY STILL BE SLUSHY AND SNOW COVERED THROUGH MID-MORNING. SNOWFALL SHOULD COME TO AN END IN MOST MOUNTAIN AREAS DURING THE AFTERNOON. $$ COZ041-121315- /O.EXP.KBOU.WW.Y.0026.000000T0000Z-110512T1200Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- INCLUDING THE CITIES OF...CASTLE ROCK...ELBERT...FONDIS...KIOWA... LARKSPUR 607 AM MDT THU MAY 12 2011 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING ON THE PALMER DIVIDE... THE WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING. SNOWFALL OVER THE HIGHER AREAS OF THE PALMER DIVIDE TO THE SOUTH AND SOUTHEAST OF DENVER WILL CONTINUE TO DECREASE EARLY THIS MORNING. SNOWFALL EARLY THIS MORNING SHOULD BE LIGHT AND ANY ADDITIONAL ACCUMULATION WILL BE UNDER 2 INCHES AND MAINLY CONFINED TO GRASSY AREAS. $$ BAKER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 5:26 AM MDT | Flash Flood Watch | BOU | Boulder, Larimer | 10 hr |
| May 11, 12:25 PM MDT | Areal Flood Advisory | BOU | Boulder | 6 hr |
| May 11, 1:50 PM MDT | Special Weather Statement | BOU | Lincoln | 25 min |
| May 11, 2:11 PM MDT | Special Weather Statement | BOU | Elbert | 49 min |
| May 11, 2:35 PM MDT | Special Weather Statement | BOU | Lincoln | 40 min |
| May 11, 4:08 PM MDT | Special Weather Statement | BOU | Washington | 37 min |
Nearby
Winter Storm Warnings in Colorado, 2011Every winter storm warning in 2011
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.