Alert archive / Wyoming / Winter Storm Warnings in 2011
Winter Storm Warning 7, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter storm warning at Feb 19, 2011, 2:31 PM MST for Box Butte County, Dawes County, Sioux County, Nebraska; 5 counties in Wyoming. It took effect at Feb 19, 2011, 5:00 PM MST. It was in force for 13 hr. 24 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 19, 2011, 2:31 PM MST (21:31 UTC)
- In effect from
- Feb 19, 2011, 5:00 PM MST
- Expired
- Feb 20, 2011, 6:24 AM MST
- In force
- 13 hr
- Issued by
- NWS Cheyenne, WY
Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE, Albany County, WY, Carbon County, WY, Converse County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 135 km from the middle of the area, began a volume at 21:29 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 20, 4:00 AM MST | SNOW 1 | Rawlins, WY | SLICK ROADS WITH MANY ACCIDENTES |
| Feb 20, 5:00 AM MST | SNOW 2.4 | 35 S Rawlins, WY | SAGE CK BASIN SNOTEL. EL 7850 SWE 0.2 RATIO 12-1 |
| Feb 20, 5:00 AM MST | SNOW 2.4 | 35 S Rawlins, WY | SAGE CK BASIN SNOTEL. EL 7850 SWE 0.2 RATIO 12-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | SNOW 2.4 | Sandstone Ranger Statio, WY | SNOTEL SITE EL 8150 SWE 0.2 RATIO 12-1 |
| Feb 20, 5:00 AM MST | SNOW 2.4 | Sandstone Ranger Statio, WY | SNOTEL SITE EL 8150 SWE 0.2 RATIO 12-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | SNOW 3 | 6 Sw Centennial, WY | CINNABAR SNOTEL SITE EL 9574 SWE 0.2 RATIO 15-1 |
| Feb 20, 5:00 AM MST | SNOW 3 | 6 Sw Centennial, WY | CINNABAR SNOTEL SITE EL 9574 SWE 0.2 RATIO 15-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | SNOW 3 | Brooklyn Lake, WY | SNOTEL SITE EL 10240 SWE 0.2 RATIO 15-1 |
| Feb 20, 5:00 AM MST | SNOW 3 | Brooklyn Lake, WY | SNOTEL SITE EL 10240 SWE 0.2 RATIO 15-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | SNOW 3.6 | South Brush Creek, WY | SNOTEL SITE EL 8440 SWE 0.3 RATIO 12-1 |
| Feb 20, 5:00 AM MST | SNOW 3.6 | South Brush Creek, WY | SNOTEL SITE EL 8440 SWE 0.3 RATIO 12-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | SNOW 4.5 | Sand Lake, WY | SNOTEL SITE EL 10050 SWE 0.3 RATIO 15-1 |
| Feb 20, 5:00 AM MST | SNOW 4.5 | Sand Lake, WY | SNOTEL SITE EL 10050 SWE 0.3 RATIO 15-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | SNOW 6 | North French Creek, WY | SNOTEL SITE EL 10130 SWE 0.4 RATIO 15-1 |
| Feb 20, 5:00 AM MST | SNOW 6 | North French Creek, WY | SNOTEL SITE EL 10130 SWE 0.4 RATIO 15-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | HEAVY SNOW 7.5 | Divide Peak, WY | SNOTEL SITE EL 8880 SWE 0.5 RATIO 15-1 |
| Feb 20, 5:00 AM MST | SNOW 7.5 | Divide Peak, WY | SNOTEL SITE EL 8880 SWE 0.5 RATIO 15-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | HEAVY SNOW 9 | Webber Springs, WY | SNOTEL SITE EL 9250 SWE 06 RATIO 15-1 |
| Feb 20, 5:00 AM MST | SNOW 9 | Webber Springs, WY | SNOTEL SITE EL 9250 SWE 06 RATIO 15-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:00 AM MST | HEAVY SNOW 10.5 | Old Battle, WY | SNOTEL SITE EL 10000 SWE 0.7 RATIO 15-1 |
| Feb 20, 5:00 AM MST | SNOW 10.5 | Old Battle, WY | SNOTEL SITE EL 10000 SWE 0.7 RATIO 15-1. FROM 6 PM SAT THRU 5 AM SUN. |
| Feb 20, 5:30 AM MST | SNOW 1 | Saratoga, WY | |
| Feb 20, 5:35 AM MST | SNOW 2.5 | Lusk, WY | |
| Feb 20, 5:37 AM MST | SNOW 2 | Chadron, NE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 9.5 hours before the alert went out and 240 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
- 646 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
764 WWUS45 KCYS 192131 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 231 PM MST SAT FEB 19 2011 ...SIGNIFICANT WINTER STORM WILL IMPACT MOST OF SOUTHEAST WYOMING AND WESTERN NEBRASKA THROUGH SUNDAY... .A PACIFIC STORM SYSTEM WILL MOVE ACROSS THE CENTRAL ROCKIES AND INTO THE HIGH PLAINS TONIGHT. THE COMBINATION OF THE STORM SYSTEM AND AN ARCTIC FRONT OVER THE GREAT PLAINS WILL RESULT IN WIDESPREAD FROZEN PRECIPITATION AND COLDER TEMPERATURES OVER THE REGION TONIGHT THROUGH SUNDAY NIGHT. SNOW IS EXPECTED TO FALL HEAVY AT TIMES OVER THE MOUNTAINS AND PORTIONS OF THE HIGH PLAINS AS SURFACE LOW PRESSURE RAPIDLY DEVELOPS OVER COLORADO AND NEBRASKA LATE TONIGHT. WYZ103-112-114-201100- /O.UPG.KCYS.WS.A.0005.110220T0000Z-110221T0000Z/ /O.NEW.KCYS.WS.W.0007.110220T0000Z-110221T0000Z/ NORTH LARAMIE RANGE-SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 231 PM MST SAT FEB 19 2011 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...FROM 5 PM THIS EVENING THROUGH 5 PM SUNDAY. * TOTAL SNOW ACCUMULATIONS...8 TO 16 INCHES...WITH THE HIGHEST AMOUNTS OVER THE SNOWY AND SIERRA MADRE RANGES. * WINDS/VISIBILITIES...WEST WINDS WILL GUST AS HIGH AS 35 MPH TONIGHT AND SUNDAY. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. THE SNOW ALONG WITH THE BLOWING SNOW WILL FREQUENTLY REDUCE VISIBILITIES TO LESS THAN A HALF MILE. * IMPACTS...PEOPLE PLANNING TRAVEL OR OUTDOOR ACTIVITIES IN THE MOUNTAINS SHOULD BE PREPARED ADVERSE WEATHER CONDITIONS. THE SNOW WILL CREATE HAZARDOUS CONDITIONS FOR TRAVEL AND OUTDOOR ACTIVITIES. ROADS WILL BE VERY SLICK 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 ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ NEZ002-003-095-WYZ101-102-201100- /O.UPG.KCYS.WS.A.0005.110220T0000Z-110221T0000Z/ /O.NEW.KCYS.WS.W.0007.110220T0000Z-110221T0000Z/ DAWES-BOX BUTTE-NORTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY- INCLUDING THE CITIES OF...CHADRON...ALLIANCE...HARRISON... DOUGLAS...GLENROCK...LUSK 231 PM MST SAT FEB 19 2011 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...SNOW...SLEET AND FREEZING DRIZZLE WILL DEVELOP BY THIS EVENING ACROSS EAST CENTRAL WYOMING...AND THEN PUSH INTO NORTHWEST NEBRASKA BEFORE MIDNIGHT TONIGHT. * TOTAL SNOW ACCUMULATIONS...4 TO 8 INCHES IS EXPECTED BY MONDAY EVENING. * WINDS/VISIBILITIES...EAST TO NORTHEAST WINDS WILL GUST AS HIGH AS 35 MPH TONIGHT AND SUNDAY. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. THE SNOW ALONG WITH THE BLOWING SNOW WILL FREQUENTLY REDUCE THE VISIBILITIES TO AROUND A HALF MILE AT TIMES. * IMPACTS...THE SNOW WILL BE MIXED WITH SLEET AND POSSIBLY FREEZING RAIN AT TIMES...ESPECIALLY ACROSS THE LOWER VALLEYS. THE SNOW AND ICE WILL CREATE HAZARDOUS TRAVEL CONDITIONS ACROSS THE AREA WITH SNOW PACKED AND ICY ROADWAYS...WHICH WILL BECOME VERY SLICK BY EARLY SUNDAY MORNING. WIND CHILL VALUES WILL LOWER BETWEEN 10 BELOW AND 5 ABOVE ZERO TONIGHT AND CONTINUE THROUGH SUNDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ NEZ019>021-096-WYZ107-108-201100- /O.NEW.KCYS.WW.Y.0009.110220T0300Z-110221T0000Z/ SCOTTS BLUFF-BANNER-MORRILL-SOUTH SIOUX-EAST PLATTE COUNTY- GOSHEN COUNTY- INCLUDING THE CITIES OF...SCOTTSBLUFF...GERING...HARRISBURG... BRIDGEPORT...BAYARD...AGATE...GLENDO...WHEATLAND...CHUGWATER... GUERNSEY...TORRINGTON 231 PM MST SAT FEB 19 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...FREEZING RAIN AND SLEET...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO 5 PM MST SUNDAY. * TIMING...FREEZING DRIZZLE IS POSSIBLE LATE THIS EVENING WITH PATCHY FOG. BY MIDNIGHT...LIGHT FREEZING RAIN IS THEN EXPECTED TO DEVELOP WITH SLEET MIXED IN AT TIMES. FREEZING RAIN AND SLEET WILL CHANGE TO ALL SNOW BY SUNDAY MORNING AS THE LOW PRESSURE SYSTEM PUSHES EAST OF THE AREA. * TOTAL ICE AND SNOW ACCUMULATIONS...AROUND ONE TENTH OF AN INCH OF ICE ACCUMULATION IS POSSIBLE BY EARLY SUNDAY MORNING WITH 1 TO 4 INCHES OF SNOW ACCUMULATION DURING THE DAY ON SUNDAY. THE HIGHEST SNOW ACCUMULATIONS WILL BE NORTH OF THE NORTH PLATTE RIVER VALLEY. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS BETWEEN 10 TO 20 MPH AND GUSTS UP TO 30 MPH WILL RESULT IN PATCHY BLOWING SNOW AND REDUCED VISIBILITIES ON SUNDAY. * IMPACTS...ALTHOUGH FREEZING RAIN AND SLEET WILL NOT BE FALLING ALL NIGHT...PERIODS OF LIGHT FREEZING RAIN...FREEZING DRIZZLE...AND SLEET WILL RESULT IN VERY SLICK ROADWAYS AND HAZARDOUS TRAVEL CONDITIONS. RESIDENTS AND MOTORISTS ARE URGED TO USE CAUTION WHILE TRAVELING ACROSS FAR EASTERN WYOMING AND WESTERN NEBRASKA TONIGHT AND TOMORROW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WYZ104>106-109>111-113-201100- /O.NEW.KCYS.WW.Y.0009.110220T0000Z-110221T0000Z/ FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS- SOUTHWEST CARBON COUNTY-UPPER NORTH PLATTE RIVER BASIN- INCLUDING THE CITIES OF...MUDDY GAP...MEDICINE BOW...BORDEAUX... RAWLINS...SINCLAIR...HANNA...ARLINGTON...ELK MOUNTAIN...BAGGS... DIXON...SARATOGA...ENCAMPMENT...RIVERSIDE 231 PM MST SAT FEB 19 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SUNDAY. * TIMING...PERIODS OF SNOW WILL DEVELOP THIS EVENING AND CONTINUE THROUGH SUNDAY. * TOTAL SNOW ACCUMULATIONS...2 TO 6 INCHES OF SNOW ARE EXPECTED IN THE VALLEYS WITH THE HIGHEST AMOUNTS ALONG WEST AND NORTHWEST FACING SLOPES. * WINDS/VISIBILITIES...SOUTHEAST WINDS WILL SHIFT INTO THE WEST TONIGHT AND REMAIN RELATIVELY LIGHT BETWEEN 5 TO 15 MPH. BLOWING SNOW IS NOT EXPECTED TO BE A MAJOR HAZARD. HOWEVER...FALLING SNOW MAY RESULT IN VISIBILITIES BELOW 1 MILE AT TIMES. * IMPACTS...SNOW WILL PRIMARILY CAUSE TRAVEL DIFFICULTIES ACROSS THE AREA. ROADS WILL BECOME SNOW PACKED AND SLICK TONIGHT AND SUNDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
2 follow-up statements
369 WWUS45 KCYS 200418 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 918 PM MST SAT FEB 19 2011 ...DEVELOPING WINTER STORM WILL IMPACT MOST OF SOUTHEAST WYOMING AND WESTERN NEBRASKA THROUGH SUNDAY... .A PACIFIC STORM SYSTEM WILL CONTINUE MOVE ACROSS THE CENTRAL ROCKIES AND INTO THE HIGH PLAINS OVERNIGHT. THE COMBINATION OF THE STORM SYSTEM AND AN ARCTIC FRONT OVER THE GREAT PLAINS WILL RESULT IN WIDESPREAD FROZEN PRECIPITATION AND COLDER TEMPERATURES OVER THE REGION TONIGHT THROUGH SUNDAY NIGHT. SNOW IS EXPECTED TO FALL HEAVY AT TIMES OVER THE MOUNTAINS AND PORTIONS OF THE HIGH PLAINS AS SURFACE LOW PRESSURE RAPIDLY DEVELOPS OVER COLORADO AND NEBRASKA EARLY SUNDAY MORNING. WYZ103-112-114-201500- /O.CON.KCYS.WS.W.0007.000000T0000Z-110221T0000Z/ NORTH LARAMIE RANGE-SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 918 PM MST SAT FEB 19 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. * TIMING...SNOW WILL DEVELOP OVERNIGHT AND CONTINUE THROUGH 5 PM SUNDAY. * TOTAL SNOW ACCUMULATIONS...8 TO 14 INCHES...WITH THE HIGHEST AMOUNTS OVER THE HIGHEST ELEVATIONS OF THE SNOWY AND SIERRA MADRE RANGES. * WINDS/VISIBILITIES...WEST WINDS WILL GUST AS HIGH AS 20 TO 30 MPH OVER EXPOSED AREAS THROUGH SUNDAY. THESE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. THE SNOW ALONG WITH THE BLOWING SNOW WILL FREQUENTLY REDUCE VISIBILITIES TO LESS THAN A HALF MILE. * IMPACTS...PEOPLE PLANNING TRAVEL OR OUTDOOR RECREATION ACTIVITIES IN THE MOUNTAINS SHOULD BE PREPARED ADVERSE WEATHER CONDITIONS. THE SNOW WILL CREATE HAZARDOUS CONDITIONS FOR TRAVEL AND OUTDOOR ACTIVITIES. ROADS WILL BE VERY SLICK 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 ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD... AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ NEZ002-003-095-WYZ101-102-201500- /O.CON.KCYS.WS.W.0007.000000T0000Z-110221T0000Z/ DAWES-BOX BUTTE-NORTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY- INCLUDING THE CITIES OF...CHADRON...ALLIANCE...HARRISON... DOUGLAS...GLENROCK...LUSK 918 PM MST SAT FEB 19 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. * TIMING...SNOW WILL DEVELOP BY EARLY SUNDAY MORNING ACROSS EAST CENTRAL WYOMING...AND THEN PUSH INTO NORTHWEST NEBRASKA BEFORE SUNRISE SUNDAY. * TOTAL SNOW ACCUMULATIONS...4 TO 8 INCHES IS EXPECTED BY SUNDAY EVENING. * WINDS/VISIBILITIES...EAST TO NORTHEAST WINDS WILL GUST AS HIGH AS 20 TO 30 MPH OVERNIGHT AND SUNDAY. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. THE SNOW ALONG WITH THE BLOWING SNOW WILL FREQUENTLY REDUCE THE VISIBILITIES TO AROUND A HALF MILE AT TIMES. * IMPACTS...THE SNOW AND AREAS OF BLOWING SNOW WILL CREATE HAZARDOUS TRAVEL CONDITIONS ACROSS THE AREA WITH SNOW PACKED AND ICY ROADWAYS...WHICH WILL BECOME VERY SLICK BY EARLY SUNDAY MORNING. WIND CHILL VALUES WILL LOWER BETWEEN 10 BELOW AND 5 ABOVE ZERO TONIGHT AND CONTINUE THROUGH SUNDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD... AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ NEZ019>021-096-WYZ107-108-201500- /O.CON.KCYS.WW.Y.0009.000000T0000Z-110221T0000Z/ SCOTTS BLUFF-BANNER-MORRILL-SOUTH SIOUX-EAST PLATTE COUNTY- GOSHEN COUNTY- INCLUDING THE CITIES OF...SCOTTSBLUFF...GERING...HARRISBURG... BRIDGEPORT...BAYARD...AGATE...GLENDO...WHEATLAND...CHUGWATER... GUERNSEY...TORRINGTON 918 PM MST SAT FEB 19 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. * TIMING...LIGHT FREEZING RAIN IS POSSIBLE LATE THIS EVENING...BUT WILL BECOME SNOW BY AROUND 2 AM MST SUNDAY. * TOTAL ICE AND SNOW ACCUMULATIONS...AROUND ONE TENTH OF AN INCH OF LOCALIZED ICE ACCUMULATION IS POSSIBLE BY AROUND 2 AM MST. SNOW ACCUMULATIONS OF 1 TO 4 INCHES WILL BE POSSIBLE THROUGH SUNDAY. THE HIGHEST SNOW ACCUMULATIONS WILL BE NORTH OF THE NORTH PLATTE RIVER VALLEY. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS BETWEEN 10 TO 20 MPH AND GUSTS UP TO 30 MPH WILL RESULT IN AREAS OF BLOWING SNOW AND REDUCED VISIBILITIES ON SUNDAY. * IMPACTS...ALTHOUGH FREEZING RAIN WILL NOT BE FALLING ALL NIGHT...IT WILL LIKELY RESULT IN VERY SLICK ROADWAYS AND HAZARDOUS TRAVEL CONDITIONS AS SNOWFALL THEN FALLS ON THE SLICK ROADWAYS SUNDAY. RESIDENTS AND MOTORISTS ARE URGED TO USE CAUTION WHILE TRAVELING ACROSS FAR EASTERN WYOMING AND WESTERN NEBRASKA TONIGHT AND TOMORROW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WYZ104>106-109>111-113-201500- /O.CON.KCYS.WW.Y.0009.000000T0000Z-110221T0000Z/ FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS- SOUTHWEST CARBON COUNTY-UPPER NORTH PLATTE RIVER BASIN- INCLUDING THE CITIES OF...MUDDY GAP...MEDICINE BOW...BORDEAUX... RAWLINS...SINCLAIR...HANNA...ARLINGTON...ELK MOUNTAIN...BAGGS... DIXON...SARATOGA...ENCAMPMENT...RIVERSIDE 918 PM MST SAT FEB 19 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. * TIMING...PERIODS OF SNOW WILL DEVELOP OVERNIGHT AND WILL CONTINUE THROUGH 5 PM MST SUNDAY. * TOTAL SNOW ACCUMULATIONS...3 TO 6 INCHES OF SNOW ARE EXPECTED IN THE VALLEYS WITH THE HIGHEST AMOUNTS ALONG WEST AND NORTHWEST FACING FOOTHILLS. * WINDS/VISIBILITIES...SOUTHEAST WINDS WILL SHIFT INTO THE WEST TONIGHT AND REMAIN RELATIVELY LIGHT BETWEEN 5 TO 15 MPH. BLOWING SNOW IS NOT EXPECTED TO BE A MAJOR HAZARD. HOWEVER... FALLING SNOW MAY RESULT IN VISIBILITIES BELOW 1 MILE AT TIMES. * IMPACTS...SNOW WILL PRIMARILY CAUSE TRAVEL DIFFICULTIES ACROSS THE AREA. ROADS WILL BECOME SNOW PACKED AND SLICK TONIGHT AND SUNDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ CARPENTER
534 WWUS45 KCYS 201324 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 624 AM MST SUN FEB 20 2011 ...SNOW AND GUSTY WINDS WILL CONTINUE TODAY... .A PACIFIC STORM SYSTEM WILL CONTINUE TO MOVE ACROSS THE CENTRAL ROCKIES AND INTO THE HIGH PLAINS TODAY. SNOW SHOWERS WILL CONTINUE TO OCCUR OVER THE MOUNTAINS AND PORTIONS OF THE HIGH PLAINS THROUGH LATE THIS AFTERNOON AS A RESULT. GUSTY WEST WINDS WEST OF THE LARAMIE RANGE AND NORTHERLY WINDS EAST OF THE LARAMIE RANGE WILL ALSO PRODUCE AREAS OF BLOWING SNOW. NEZ002-003-095-WYZ101>103-112-114-210000- /O.CAN.KCYS.WS.W.0007.000000T0000Z-110221T0000Z/ /O.EXA.KCYS.WW.Y.0009.000000T0000Z-110221T0000Z/ DAWES-BOX BUTTE-NORTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE-SIERRA MADRE RANGE- SNOWY RANGE- INCLUDING THE CITIES OF...CHADRON...ALLIANCE...HARRISON... DOUGLAS...GLENROCK...LUSK...CENTENNIAL...ALBANY...WOODS LANDING 624 AM MST SUN FEB 20 2011 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. THE WINTER STORM WARNING HAS BEEN CANCELLED. * TIMING...SNOW SHOWERS WILL CONTINUE TO MOVE FROM SOUTHWEST TO NORTHEAST ACROSS THE AREA THROUGH LATE THIS AFTERNOON. * TOTAL ICE AND SNOW ACCUMULATIONS...1 TO 3 INCHES OF SNOW HAS FALLEN ACROSS THE LOWER ELEVATIONS...WITH 3 TO 10 INCHES IN THE SNOWY AND SIERRA MADRE MOUNTAINS SINCE YESTERDAY. CAN EXPECT AN ADDITIONAL 1 TO 2 INCHES OF ACCUMULATION BY LATE THIS AFTERNOON. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS BETWEEN 10 TO 20 MPH AND GUSTS UP TO 30 MPH WILL RESULT IN AREAS OF BLOWING SNOW AND REDUCED VISIBILITIES TODAY. * IMPACTS...VERY SLICK ROADWAYS AND HAZARDOUS TRAVEL CONDITIONS WILL CONTINUE TODAY DUE TO RECENT SNOWFALL. RESIDENTS AND MOTORISTS ARE URGED TO USE CAUTION WHILE TRAVELING ACROSS FAR EASTERN WYOMING AND WESTERN NEBRASKA TONIGHT AND TOMORROW. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ WYZ110-201430- /O.CAN.KCYS.WW.Y.0009.000000T0000Z-110221T0000Z/ NORTH SNOWY RANGE FOOTHILLS- INCLUDING THE CITIES OF...ARLINGTON...ELK MOUNTAIN 624 AM MST SUN FEB 20 2011 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER WEATHER ADVISORY. SNOWFALL HAS DIMINISHED ACROSS THE AREA...BUT WINDS HAVE INCREASED THROUGH THE MORNING SO HAVE REPLACED THE WINTER WEATHER ADVISORY WITH A HIGH WIND WARNING. $$ NEZ019>021-096-WYZ107-108-210000- /O.CON.KCYS.WW.Y.0009.000000T0000Z-110221T0000Z/ SCOTTS BLUFF-BANNER-MORRILL-SOUTH SIOUX-EAST PLATTE COUNTY- GOSHEN COUNTY- INCLUDING THE CITIES OF...SCOTTSBLUFF...GERING...HARRISBURG... BRIDGEPORT...BAYARD...AGATE...GLENDO...WHEATLAND...CHUGWATER... GUERNSEY...TORRINGTON 624 AM MST SUN FEB 20 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * TIMING...SNOW SHOWERS WILL CONTINUE TO MOVE FROM SOUTHWEST TO NORTHEAST ACROSS THE AREA THROUGH LATE THIS AFTERNOON. * TOTAL ICE AND SNOW ACCUMULATIONS...1 TO 2 INCHES OF SNOW ACCUMULATION HAS OCCURRED SINCE YESTERDAY. CAN EXPECT AN ADDITIONAL 1 TO 2 INCHES THROUGH LATE THIS AFTERNOON. * WINDS/VISIBILITIES...NORTH TO NORTHEAST WINDS BETWEEN 10 TO 20 MPH AND GUSTS UP TO 30 MPH WILL RESULT IN AREAS OF BLOWING SNOW AND REDUCED VISIBILITIES. * IMPACTS...VERY SLICK ROADWAYS AND HAZARDOUS TRAVEL CONDITIONS WILL CONTINUE TODAY DUE TO RECENT SNOWFALL. RESIDENTS AND MOTORISTS ARE URGED TO USE CAUTION WHILE TRAVELING ACROSS FAR EASTERN WYOMING AND WESTERN NEBRASKA TONIGHT AND TOMORROW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WYZ104>106-109-111-113-210000- /O.CON.KCYS.WW.Y.0009.000000T0000Z-110221T0000Z/ FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- CENTRAL CARBON COUNTY-SOUTHWEST CARBON COUNTY- UPPER NORTH PLATTE RIVER BASIN- INCLUDING THE CITIES OF...MUDDY GAP...MEDICINE BOW...BORDEAUX... RAWLINS...SINCLAIR...HANNA...BAGGS...DIXON...SARATOGA... ENCAMPMENT...RIVERSIDE 624 AM MST SUN FEB 20 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * TIMING...SNOW SHOWERS WILL CONTINUE TO MOVE ACROSS THE AREA FROM SOUTHWEST TO NORTHEAST THROUGH THIS EVENING. * TOTAL SNOW ACCUMULATIONS...1 TO 2 INCHES OF SNOW ACCUMULATION HAS OCCURRED SINCE YESTERDAY...WITH AN ADDITIONAL 1 TO 2 INCHES EXPECTED THROUGH THIS EVENING. * WINDS/VISIBILITIES...GUSTY WESTERLY WINDS WILL PRODUCE AREAS OF BLOWING SNOW THROUGH THIS EVENING. * IMPACTS...SNOW WILL PRIMARILY CAUSE TRAVEL DIFFICULTIES ACROSS THE AREA AS ROADS WILL BECOME SNOW PACKED AND SLICK. BLOWING SNOW WILL REDUCE VISIBILITIES TO A MILE OR LESS AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 4:08 AM MST | Winter Storm Watch | CYS | Box Butte, Dawes, Sioux | 10 hr |
| Feb 19, 2:31 PM MST | Winter Weather Advisory | CYS | Banner, Box Butte, Dawes, Morrill, Scotts Bluff, Sioux | 26 hr |
Nearby
Winter Storm Warnings in Wyoming, 2011Winter Storm Warnings in Nebraska, 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.