Alert archive / Wyoming / Winter Storm Warnings in 2012
Winter Storm Warning 1, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter storm warning at Jan 18, 2012, 2:33 AM MST for Albany County, Carbon County, Wyoming. It took effect at Jan 18, 2012, 6:00 PM MST. It was in force for 18 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
- Jan 18, 2012, 2:33 AM MST (09:33 UTC)
- In effect from
- Jan 18, 2012, 6:00 PM MST
- Expired
- Jan 19, 2012, 11:46 AM MST
- In force
- 18 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 09:32 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, 9.6 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
- 2505 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
391 WWUS45 KCYS 180933 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 233 AM MST WED JAN 18 2012 ...HEAVY SNOW IN THE SNOWY AND SIERRA MADRE MOUNTAINS THIS EVENING THROUGH FRIDAY EVENING... .MOIST WESTERLY PACIFIC FLOW IS EXPECTED TO PRODUCE A PROLONGED PERIOD OF SNOW ACROSS THE SNOWY AND SIERRA MADRE MOUNTAINS TONIGHT THROUGH FRIDAY AFTERNOON. SNOWFALL AMOUNTS OF 12 TO 18 INCHES ARE POSSIBLE...WITH LOCALLY HIGHER AMOUNTS ON THE WEST- FACING SLOPES. IN ADDITION...GUSTY WINDS ARE EXPECTED TO PRODUCE BLOWING SNOW...SIGNIFICANTLY REDUCING VISIBILITIES. WYZ112-114-182245- /O.UPG.KCYS.WS.A.0001.120119T0100Z-120121T0100Z/ /O.NEW.KCYS.WS.W.0001.120119T0100Z-120121T0100Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 233 AM MST WED JAN 18 2012 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MST FRIDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MST FRIDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING...THIS EVENING THROUGH FRIDAY AFTERNOON. * TOTAL SNOW ACCUMULATIONS...12 TO 18 INCHES WITH LOCALLY HIGHER AMOUNTS ON THE WEST-FACING SLOPES. * WINDS/VISIBILITIES...WEST TO SOUTHWEST WINDS 25 TO 35 MPH WITH HIGHER GUSTS TO 50 MPH. GUSTY WINDS WILL PRODUCE BLOWING AND DRIFTING SNOW IN OPEN AREAS. BLOWING SNOW MAY REDUCE VISIBILITIES TO ONE HALF MILE OR LESS AT TIMES. * IMPACTS...TRAVEL WILL BECOME DANGEROUS IN THE MOUNTAINS DUE TO THE COMBINATION OF HEAVY SNOWFALL AND LOWERED VISIBILITIES FROM BLOWING SNOW. 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. && $$ FINCH
4 follow-up statements
858 WWUS45 KCYS 182212 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 312 PM MST WED JAN 18 2012 ...HEAVY SNOW IN THE SNOWY AND SIERRA MADRE MOUNTAINS TONIGHT THROUGH FRIDAY EVENING... .MOIST WESTERLY PACIFIC FLOW WILL PRODUCE A PROLONGED PERIOD OF SNOW ACROSS THE SNOWY AND SIERRA MADRE MOUNTAINS TONIGHT THROUGH FRIDAY AFTERNOON. SNOWFALL AMOUNTS OF 15 TO 20 INCHES ARE EXPECTED...WITH LOCALLY HIGHER AMOUNTS ON THE WEST-FACING SLOPES. IN ADDITION...GUSTY WINDS ARE EXPECTED TO PRODUCE BLOWING SNOW... SIGNIFICANTLY REDUCING VISIBILITIES. WYZ112-114-191200- /O.CON.KCYS.WS.W.0001.120119T0100Z-120121T0100Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 312 PM MST WED JAN 18 2012 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MST FRIDAY. * TIMING...THIS EVENING THROUGH FRIDAY AFTERNOON. * TOTAL SNOW ACCUMULATIONS...12 TO 18 INCHES WITH LOCALLY HIGHER AMOUNTS ON THE WEST-FACING SLOPES. * WINDS/VISIBILITIES...WEST TO SOUTHWEST WINDS 25 TO 35 MPH WITH HIGHER GUSTS TO 50 MPH. GUSTY WINDS WILL PRODUCE BLOWING AND DRIFTING SNOW IN OPEN AREAS. BLOWING SNOW MAY REDUCE VISIBILITIES TO ONE HALF MILE OR LESS AT TIMES. * IMPACTS...TRAVEL AND OUTDOOR ACTIVITIES WILL BE DANGEROUS IN THE MOUNTAINS DUE TO THE COMBINATION OF HEAVY SNOWFALL AND LOWERED VISIBILITIES FROM BLOWING SNOW. IN PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD... AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ LIEBL
096 WWUS45 KCYS 190402 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 902 PM MST WED JAN 18 2012 ...HEAVY SNOW IN THE SNOWY AND SIERRA MADRE MOUNTAINS WILL CONTINUE THROUGH EARLY FRIDAY EVENING... .MOIST WESTERLY WIND FLOW WILL OVER THE CENTRAL ROCKIES WILL PRODUCE A PROLONGED PERIOD OF SNOW ACROSS THE SNOWY AND SIERRA MADRE RANGES THROUGH EARLY FRIDAY EVENING. SNOWFALL AMOUNTS OF 15 TO 20 INCHES ARE EXPECTED...WITH LOCALLY HIGHER AMOUNTS ON THE WEST FACING SLOPES. IN ADDITION...STRONG WINDS ARE EXPECTED TO PRODUCE BLOWING SNOW IN OPEN AREAS...SIGNIFICANTLY REDUCING VISIBILITIES. WYZ112-114-191300- /O.CON.KCYS.WS.W.0001.000000T0000Z-120121T0100Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 902 PM MST WED JAN 18 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST FRIDAY. * TIMING...THIS EVENING THROUGH FRIDAY AFTERNOON. * TOTAL SNOW ACCUMULATIONS...12 TO 20 INCHES WITH LOCALLY HIGHER AMOUNTS ON THE WEST FACING SLOPES. * WINDS/VISIBILITIES...WEST TO SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 60 MPH. THE WINDS WILL PRODUCE BLOWING AND DRIFTING SNOW IN OPEN AREAS. BLOWING SNOW WILL REDUCE VISIBILITIES FREQUENTLY TO ONE HALF MILE OR LESS. * IMPACTS...TRAVEL AND OUTDOOR ACTIVITIES WILL BE DANGEROUS IN THE MOUNTAINS DUE TO THE COMBINATION OF HEAVY SNOWFALL AND LOWERED VISIBILITIES FROM BLOWING SNOW. 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. && $$ WEILAND
951 WWUS45 KCYS 190943 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 243 AM MST THU JAN 19 2012 ...HEAVY SNOW IN THE SNOWY AND SIERRA MADRE MOUNTAINS WILL CONTINUE THROUGH EARLY FRIDAY EVENING... .MOIST WESTERLY WIND FLOW OVER SOUTHEAST WYOMING WILL PRODUCE A PROLONGED PERIOD OF SNOW ACROSS THE SNOWY AND SIERRA MADRE RANGES THROUGH EARLY FRIDAY EVENING. SNOWFALL AMOUNTS OF 15 TO 20 INCHES ARE EXPECTED...WITH LOCALLY HIGHER AMOUNTS ON THE WEST FACING SLOPES. IN ADDITION...STRONG WINDS ARE EXPECTED TO PRODUCE BLOWING SNOW IN OPEN AREAS...SIGNIFICANTLY REDUCING VISIBILITIES. WYZ112-114-192330- /O.CON.KCYS.WS.W.0001.000000T0000Z-120121T0100Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 243 AM MST THU JAN 19 2012 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST FRIDAY. * TIMING...THROUGH FRIDAY AFTERNOON. * TOTAL SNOW ACCUMULATIONS...12 TO 20 INCHES WITH LOCALLY HIGHER AMOUNTS ON THE WEST FACING SLOPES. * WINDS/VISIBILITIES...WEST TO SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 60 MPH. THE WINDS WILL PRODUCE BLOWING AND DRIFTING SNOW IN OPEN AREAS. BLOWING SNOW WILL REDUCE VISIBILITIES FREQUENTLY TO ONE HALF MILE OR LESS. * IMPACTS...TRAVEL AND OUTDOOR ACTIVITIES WILL BE DANGEROUS IN THE MOUNTAINS DUE TO THE COMBINATION OF HEAVY SNOWFALL AND LOWERED VISIBILITIES FROM BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD... AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ FINCH
548 WWUS45 KCYS 191846 WSWCYS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 1146 AM MST THU JAN 19 2012 WYZ112-114-192000- /O.CAN.KCYS.WS.W.0001.000000T0000Z-120121T0100Z/ SIERRA MADRE RANGE-SNOWY RANGE- INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING 1146 AM MST THU JAN 19 2012 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER STORM WARNING. SNOWFALL HAS BEEN LIGHT AND INTERMITTENT ACROSS THE MOUNTAINS THIS MORNING WITH OBSERVATIONS ONLY SHOWING AN INCH OR TWO OF SNOW ACCUMULATION SINCE LAST NIGHT. THEREFORE...HAVE CANCELLED THE WINTER STORM WARNING SINCE HEAVY SNOWFALL AMOUNTS ARE NOT EXPECTED. HOWEVER...SNOW WILL REDEVELOP TONIGHT AS AN UPPER LEVEL DISTURBANCE MOVES ACROSS THE AREA. MODERATE SNOWFALL ACCUMULATIONS ARE POSSIBLE INTO FRIDAY MORNING ACROSS THE SIERRA MADRE AND SNOWY RANGES. $$ TT
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.