Alert archive / Wyoming / Winter Storm Warnings in 2012
Winter Storm Warning 4, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter storm warning at Feb 19, 2012, 11:27 PM MST for Albany County, Carbon County, Wyoming. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 19, 2012, 11:27 PM MST (06:27 UTC)
- Expired
- Feb 20, 2012, 4:26 AM MST
- In force
- 5 hr
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY
The radar
The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 06:30 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.
The nearest sounding before it
Riverton, WY (KRIW), launched 00:00Z, 6.5 hours before the alert went out and 230 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
- 835 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
193 WWUS45 KCYS 200627 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 1127 PM MST SUN FEB 19 2012 ...SNOW AND GUSTY WINDS WILL CONTINUE TO DEVELOP ACROSS THE AREA TONIGHT... .A STORM SYSTEM MOVING ACROSS THE CENTRAL ROCKIES WILL BRING SNOW AND GUSTY WINDS TO SOUTHEAST WYOMING AND THE NORTHERN NEBRASKA PANHANDLE TONIGHT AND EARLY MONDAY. THE STORM SYSTEM WILL DEPART OUT ONTO THE PLAINS MONDAY MORNING WITH SNOW ENDING BY AROUND NOON. WYZ110-115-201200- /O.UPG.KCYS.WW.Y.0007.000000T0000Z-120220T1200Z/ /O.NEW.KCYS.WS.W.0004.120220T0627Z-120220T1200Z/ NORTH SNOWY RANGE FOOTHILLS-LARAMIE VALLEY- INCLUDING THE CITIES OF...ARLINGTON...ELK MOUNTAIN...LARAMIE 1127 PM MST SUN FEB 19 2012 ...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST MONDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT UNTIL 5 AM MST MONDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * TIMING...THROUGH 5 AM MONDAY. * TOTAL SNOW ACCUMULATIONS...5 TO 9 INCHES. * WINDS/VISIBILITIES...WEST AT 15 TO 25 MPH IN OPEN AREAS WITH GUSTS TO 35 MPH. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW REDUCING VISIBILITIES TO ONE HALF MILE AT TIMES. * IMPACTS...TRAVEL WILL BE DIFFICULT AS ROADS BECOME SNOW COVERED AND SLIPPERY AND VISIBILITIES BECOME REDUCED. 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. && $$ WYZ104-109-111>114-201200- /O.CON.KCYS.WW.Y.0007.000000T0000Z-120220T1200Z/ FERRIS/SEMINOE/SHIRLEY MOUNTAINS-CENTRAL CARBON COUNTY- SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE- UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- INCLUDING THE CITIES OF...MUDDY GAP...RAWLINS...SINCLAIR... HANNA...BAGGS...DIXON...SARATOGA...ENCAMPMENT...RIVERSIDE... CENTENNIAL...ALBANY...WOODS LANDING 1127 PM MST SUN FEB 19 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY. * TIMING...THROUGH 5 AM MONDAY. * TOTAL SNOW ACCUMULATIONS...3 TO 6 INCHES. 6 TO 12 OVER THE SIERRA MADRE AND SNOWY RANGES. * WINDS/VISIBILITIES...WEST AT 15 TO 25 MPH IN OPEN AREAS WITH GUSTS TO 35 MPH. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW REDUCING VISIBILITIES TO ONE HALF MILE AT TIMES. * IMPACTS...TRAVEL WILL BE DIFFICULT AS ROADS BECOME SNOW COVERED AND SLIPPERY AND VISIBILITIES BECOME REDUCED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ WYZ101>103-105-201200- /O.CON.KCYS.WW.Y.0007.000000T0000Z-120220T1200Z/ CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-SHIRLEY BASIN- INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...LUSK... MEDICINE BOW 1127 PM MST SUN FEB 19 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY. * TIMING...UNTIL 5 AM MONDAY. * TOTAL SNOW ACCUMULATIONS...2 TO 5 INCHES IN LOWER ELEVATIONS WITH 6 TO 12 INCHES INTO THE NORTHERN LARAMIE RANGE. * WINDS/VISIBILITIES...NORTHWEST OF 15 TO 25 MPH WITH GUSTS TO 35 MPH DEVELOPING TONIGHT. THIS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW...REDUCING VISIBILITIES TO ONE HALF MILE AT TIMES. * IMPACTS...TRAVEL MAY BECOME DIFFICULT AS ROADS BECOME SNOW COVERED AND SLIPPERY AND VISIBILITIES BECOME REDUCED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR 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 AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ NEZ002-003-095-096-201200- /O.CON.KCYS.WW.Y.0007.000000T0000Z-120220T1800Z/ DAWES-BOX BUTTE-NORTH SIOUX-SOUTH SIOUX- INCLUDING THE CITIES OF...CHADRON...ALLIANCE...HARRISON...AGATE 1127 PM MST SUN FEB 19 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST MONDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST MONDAY. * TIMING...THROUGH 11 AM MONDAY. * TOTAL SNOW ACCUMULATIONS...2 TO 5 INCHES WITH LOCALLY HIGHER AMOUNTS POSSIBLE ALONG THE PINE RIDGE. * WINDS/VISIBILITIES...NORTHWEST AT 15 TO 25 MPH IN OPEN AREAS WITH GUSTS TO 35 MPH. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW REDUCING VISIBILITIES TO ONE HALF MILE AT TIMES. * IMPACTS...TRAVEL MAY BECOME DIFFICULT AS ROADS BECOME SNOW COVERED AND SLIPPERY AND VISIBILITIES BECOME REDUCED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ HAHN
1 follow-up statement
428 WWUS45 KCYS 201126 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 426 AM MST MON FEB 20 2012 ...SNOW ENDING ACROSS THE AREA THIS MORNING... .A STORM SYSTEM OVER CENTRAL ROCKIES THIS MORNING WILL QUICKLY MOVE INTO THE PLAINS BY THIS AFTERNOON. AS THE STORM SYSTEM MOVES INTO THE PLAINS...SNOW WILL RAPIDLY END FROM WEST TO EAST ACROSS THE AREA. GUSTY WINDS WILL PRODUCE SOME BLOWING AND DRIFTING SNOW OVER THE NEBRAKSA PANHANDLE THIS MORNING BUT CONDITIONS WILL IMPROVE AS THE SNOW ENDS. WYZ110-115-201230- /O.CAN.KCYS.WS.W.0004.000000T0000Z-120220T1200Z/ NORTH SNOWY RANGE FOOTHILLS-LARAMIE VALLEY- INCLUDING THE CITIES OF...ARLINGTON...ELK MOUNTAIN...LARAMIE 426 AM MST MON FEB 20 2012 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER STORM WARNING. SNOW WILL RAPIDLY END ACROSS THE AREA THIS MORNING. LITTLE TO NO ADDITION SNOW ACCUMLUATIONS WILL OCCUR. $$ WYZ101>105-109-111>114-201230- /O.CAN.KCYS.WW.Y.0007.000000T0000Z-120220T1200Z/ CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL CARBON COUNTY-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...LUSK...MUDDY GAP... MEDICINE BOW...RAWLINS...SINCLAIR...HANNA...BAGGS...DIXON... SARATOGA...ENCAMPMENT...RIVERSIDE...CENTENNIAL...ALBANY... WOODS LANDING 426 AM MST MON FEB 20 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER WEATHER ADVISORY. WEATHER CONDITIONS WILL CONTINUE TO IMPROVE EARLY THIS MORNING AS SNOW IS ENDING ACROSS THE AREA. $$ NEZ002-003-095-096-201800- /O.CON.KCYS.WW.Y.0007.000000T0000Z-120220T1800Z/ DAWES-BOX BUTTE-NORTH SIOUX-SOUTH SIOUX- INCLUDING THE CITIES OF...CHADRON...ALLIANCE...HARRISON...AGATE 426 AM MST MON FEB 20 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * TIMING...SNOW WILL END FROM WEST TO EAST ACROSS THE AREA THIS MORNING. * TOTAL SNOW ACCUMULATIONS...2 TO 5 INCHES WITH LOCALLY HIGHER AMOUNTS POSSIBLE ALONG THE PINE RIDGE. * WINDS/VISIBILITIES...NORTHWEST AT 15 TO 25 MPH IN OPEN AREAS WITH GUSTS TO 35 MPH. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW REDUCING VISIBILITIES TO ONE HALF MILE AT TIMES. * IMPACTS...TRAVEL MAY BECOME DIFFICULT AS ROADS BECOME SNOW COVERED AND SLIPPERY AND VISIBILITIES BECOME REDUCED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR 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 AND WHEN APPROACHING AND DRIVING OVER RAILROAD CROSSINGS. && $$ LIEBL
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 4:03 AM MST | High Wind Watch | CYS | Albany, Laramie, Platte | 10 hr |
| Feb 20, 4:03 AM MST | High Wind Warning | CYS | Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more | 70 hr |
| Feb 20, 2:31 PM MST | High Wind Watch | CYS | Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more | 24 hr |
Nearby
Winter Storm Warnings in Wyoming, 2012Every winter storm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.