Alert archive / Wyoming / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 39, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 12, 1995, 2:04 PM MDT for Big Horn County, Wyoming. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- Jul 12, 1995, 2:04 PM MDT (20:04 UTC)
- Expired
- Jul 12, 1995, 3:00 PM MDT
- In force
- 56 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Big Horn County, WY
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.1 hours before the alert went out and 165 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
- 32 J/kg
- Mixed-layer CIN
- -431 J/kg
- Mixed-layer LCL
- 2177 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSHR 122004 RRA SVRSHR WYC003-122100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SHERIDAN WY 204 PM MDT WED JUL 12 1995 THE NATIONAL WEATHER SERVICE IN SHERIDAN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH CENTRAL WYOMING ...BIG HORN COUNTY THIS INCLUDES THE TOWN OF GREYBULL AND THE SURROUNDING COMMUNITIES. AT 2 PM MDT...A WIND GUST OF 62 MILES PER HOUR WAS REPORTED AT THE GREYBULL AIRPORT. RADAR INDICATED A SEVERE THUNDERSTORM LOCATED JUST TO THE WEST OF GREYBULL AT THAT TIME. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...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 DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. LOCKHART WCJIN-WYNW & NNNN
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 12, 1:45 PM MDT, 19 minutes before
WYZ016-018-021-022>025-122045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 145 PM MDT WED JUL 12 1995 ...STRONG THUNDERSTORM WINDS CAN BE EXPECTED IN SOUTHWEST WYOMING... THUNDERSTORMS ARE MOVING OUT OF UTAH INTO SOUTHWEST WYOMING THIS AFTERNOON. SOME OF THESE STORMS HAVE BECOME RATHER STRONG AS THEY MOVE NORTHEAST AT ABOUT 30 MPH. THE MAIN THREAT FROM THESE STORMS THIS AFTERNOON WILL BE STRONG WINDS AS HIGH AS 50 TO 55 MPH. PEOPLE IN SOUTHWEST WYOMING SHOULD BE PREPARED FOR STRONG WINDS AS THUNDERSTORMS APPROACH. SECURE LOOSE ITEMS WHICH COULD BLOW AWAY AND BE PREPARED TO SEEK SHELTER IF A STORM APPROACHES. WCJIN-WYSW JMH
Special weather statement, Jul 12, 1:49 PM MDT, 15 minutes before
WYZ016-018-021-022>025-122045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 145 PM MDT WED JUL 12 1995 ...STRONG THUNDERSTORM WINDS CAN BE EXPECTED IN SOUTHWEST WYOMING... THUNDERSTORMS ARE MOVING OUT OF UTAH INTO SOUTHWEST WYOMING THIS AFTERNOON. SOME OF THESE STORMS HAVE BECOME RATHER STRONG AS THEY MOVE NORTHEAST AT ABOUT 30 MPH. THE MAIN THREAT FROM THESE STORMS THIS AFTERNOON WILL BE STRONG WINDS AS HIGH AS 50 TO 55 MPH. PEOPLE IN SOUTHWEST WYOMING SHOULD BE PREPARED FOR STRONG WINDS AS THUNDERSTORMS APPROACH. SECURE LOOSE ITEMS WHICH COULD BLOW AWAY AND BE PREPARED TO SEEK SHELTER IF A STORM APPROACHES. WCJIN-WYSW JMH
Nearby
Severe Thunderstorm Warnings in Wyoming, 1995Every severe thunderstorm warning in 1995
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.