Alert archive / Wyoming / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 63, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 25, 2012, 1:43 PM MDT for Albany County, Platte County, Wyoming. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2012, 1:43 PM MDT (19:43 UTC)
- Expired
- Jun 25, 2012, 2:24 PM MDT
- In force
- 41 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Albany County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 109 km from the middle of the area, began a volume at 19:45 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 12:00Z, 7.7 hours before the alert went out and 278 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
- 3718 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
003 WUUS55 KCYS 251943 SVRCYS WYC001-031-252045- /O.NEW.KCYS.SV.W.0063.120625T1943Z-120625T2045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 143 PM MDT MON JUN 25 2012 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL ALBANY COUNTY IN SOUTHEAST WYOMING... WEST CENTRAL PLATTE COUNTY IN SOUTHEAST WYOMING... * UNTIL 245 PM MDT * AT 141 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 16 MILES SOUTHEAST OF GARRETT...OR 25 MILES WEST OF WHEATLAND...AND MOVING NORTHEAST AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EASTERN ALBANY AND EXTREME WESTERN PLATTE COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4226 10527 4208 10499 4180 10539 4191 10557 TIME...MOT...LOC 1943Z 220DEG 11KT 4193 10540 WIND...HAIL 60MPH 1.00IN $$ GRIFFITH
2 follow-up statements
978 WWUS55 KCYS 252012 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 212 PM MDT MON JUN 25 2012 WYC001-031-252045- /O.CON.KCYS.SV.W.0063.000000T0000Z-120625T2045Z/ ALBANY WY-PLATTE WY- 212 PM MDT MON JUN 25 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL PLATTE AND NORTHEASTERN ALBANY COUNTIES UNTIL 245 PM MDT... AT 207 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 16 MILES WEST OF BORDEAUX...OR 17 MILES WEST OF WHEATLAND...MOVING NORTHEAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF WESTERN PLATTE COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CHEYENNE. && LAT...LON 4201 10547 4223 10524 4208 10499 4188 10528 TIME...MOT...LOC 2012Z 238DEG 16KT 4198 10524 WIND...HAIL 60MPH 1.00IN $$ CLAYCOMB
277 WWUS55 KCYS 252024 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 224 PM MDT MON JUN 25 2012 WYC001-031-252033- /O.CAN.KCYS.SV.W.0063.000000T0000Z-120625T2045Z/ ALBANY WY-PLATTE WY- 224 PM MDT MON JUN 25 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL PLATTE AND NORTHEASTERN ALBANY COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS /MOVED OUT OF THE WARNED AREA. A NEW SEVERE THUNDERSTORM WARNING WILL BE ISSUED FURTHER SOUTH. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CHEYENNE. LAT...LON 4201 10547 4223 10524 4208 10499 4188 10528 TIME...MOT...LOC 2023Z 220DEG 11KT 4202 10529 $$ CLAYCOMB
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 6:57 PM MDT | Special Weather Statement | CYS | Niobrara | 18 min |
| Jun 24, 7:35 PM MDT | Special Weather Statement | CYS | Laramie | 25 min |
| Jun 24, 9:52 PM MDT | Special Weather Statement | CYS | Laramie | 23 min |
| Jun 24, 11:00 PM MDT | Special Weather Statement | CYS | Laramie | 15 min |
| Jun 25, 12:05 AM MDT | Special Weather Statement | CYS | Laramie | 40 min |
| Jun 25, 12:24 AM MDT | Special Weather Statement | CYS | Laramie | 66 min |
| Jun 25, 4:55 AM MDT | Red Flag Warning | CYS | 4 days | |
| Jun 25, 1:18 PM MDT | Special Weather Statement | CYS | Albany | 57 min |
| Jun 25, 2:42 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 36 min |
| Jun 25, 2:50 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 24 min |
| Jun 25, 3:11 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara | 64 min |
| Jun 25, 3:36 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara | 54 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2012Every severe thunderstorm 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.