Alert archive / Wyoming / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 95, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 3, 1990, 5:06 PM MDT for Laramie County, Wyoming. It was in force for 64 min. 2 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
- Aug 3, 1990, 5:06 PM MDT (23:06 UTC)
- Expired
- Aug 3, 1990, 6:10 PM MDT
- In force
- 64 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 3, 5:12 PM MDT | Thunderstorm Wind 52 | Laramie, WY | |
| Aug 3, 6:00 PM MDT | Thunderstorm Wind 52 | Laramie, WY |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 11.1 hours before the alert went out and 202 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
- 2814 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 62 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 KCYS 032306
SVRCYS
WYC021-040015-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
506 PM MDT FRI AUG 3 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 615 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE SOUTHEAST PART OF WYOMING
WESTERN LARAMIE COUNTY
THIS WARNING INCLUDES THE CITY OF CHEYENNE.
AT 452PM WEATHER INDICATED A COUPLE SEVERE THUNDERSTORMS IN
EXTREME NORTHWEST LARAMIE COUNTY. ONE WAS 30 MILES NORTHWEST OF
CHEYENNE AND A SECOND WAS 35 MILES NORTH OF CHEYENNE...OR 10 MILES
SOUTH OF CHUGWATER.
THE STORMS WERE MOVING TO THE SOUTHEAST AT 35 MILES AN HOUR.
THE SEVERE THUNDERSTORM WARNING FOR EXTREME EAST ALBANY COUNTY
WILL BE ALLOWED TO EXPIRE AT 515PM. THE TORNADO WARNING FOR
EXTREME EAST ALBANY COUNTY...WHICH WAS SUPPOSED TO EXPIRE AT 530PM
...HAS BEEN TERMINATED.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 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 DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.
COXWhat 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, Aug 3, 1:32 PM MDT, 3 hours 34 minutes before
WYZ012 016-022300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 130 PM MDT FRI AUG 3 1990 THUNDERSTORMS WERE DEVELOPING RAPIDLY OVER PARTS OF SOUTHEAST WYOMING... MAINLY NEAR TORRINGTON AND SOUTHWEST OF DOUGLAS. AT 125 PM MDT...A STRONG THUNDERSTORM WAS 5 MILES NORTHWEST OF TORRINGTON. THIS STORM WILL MOVE THROUGH THE CITY OF TORRINGTON BETWEEN 130 AND 2PM THIS AFTERNOON. THIS STORM WAS PRODUCING HEAVY RAIN...STRONG GUSTY WINDS AND HAIL. ANOTHER STRONG THUNDERSTORM WAS 35 MILES SOUTHWEST OF DOUGLAS. THIS STORM WILL MOVE INTO THE LARAMIE RANGE NEAR LARAMIE PEAK BY 230PM. KEEP ALERT AND IF THUNDERSTORMS APPROACH YOUR AREA SEEK SHELTER. MEKIS.
Special weather statement, Aug 3, 2:35 PM MDT, 2 hours 31 minutes before
NEZ001-005-011-032130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 235 PM MDT FRI AUG 3 1990 ...THUNDERSTORMS STRENGTHENING OVER THE THE NEBRASKA PANHANDLE... AT 230 PM MDT...STRONG THUNDERSTORMS WERE OVER THE CENTRAL NEBRASKA PANHANDLE FROM 25 MILES WEST OF SCOTTSBLUFF NEBRASKA JUST SOUTH OF THE CITY OF MORRILL...AND 12 MILES SOUTHEAST OF SCOTTSBLUFF NEBRASKA. THE SCOTTSBLUFF POLICE DEPARTMENT REPORTED PEA TO MARBLE SIZE HAIL IN THE CITY OF SCOTTSBLUFF NEBRASKA AT 211 PM MDT. BRIEF HEAVY RAIN...GUSTY WIND AND DANGEROUS CLOUD TO GROUND LIGHTNING CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE ACROSS SCOTTSBLUFF COUNTY OF THE NEBRASKA PANHANDLE UNTIL 230 PM MDT. PmEEK
Special weather statement, Aug 3, 2:38 PM MDT, 2 hours 28 minutes before
NEZ001-005-011-032130- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 235 PM MDT FRI AUG 3 1990 ...THUNDERSTORMS STRENGTHENING OVER THE THE NEBRASKA PANHANDLE... AT 230 PM MDT...STRONG THUNDERSTORMS WERE OVER THE CENTRAL NEBRASKA PANHANDLE 25 MILES WEST OF SCOTTSBLUFF NEBRASKA JUST SOUTH OF THE CITY OF MORRILL...AND 12 MILES SOUTHEAST OF SCOTTSBLUFF NEBRASKA. THE SCOTTSBLUFF POLICE DEPARTMENT REPORTED PEA TO MARBLE SIZE HAIL IN THE CITY OF SCOTTSBLUFF NEBRASKA AT 211 PM MDT. BRIEF HEAVY RAIN...GUSTY WIND AND DANGEROUS CLOUD TO GROUND LIGHTNING CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE ACROSS SCOTTSBLUFF COUNTY OF THE NEBRASKA PANHANDLE UNTIL 330q PM MDT. CORRECTED FOR EXPIRATION TIME PEEK
Special weather statement, Aug 3, 2:56 PM MDT, 2 hours 10 minutes before
WYZ012-016-017-032155- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 255 PM MDT FRI AUG 3 1990 ...THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHEAST WYOMING... AT 245 PM MDT...THUNDERSTORMS CONTINUED TO DEVELOP OVER ALBANY... NORTHERN GOSHEN...AND SOUTHERN LARAMIE COUNTIES IN SOUTHEAST WYOMING. THE STRONGEST STORMS WERE LOCATED 15 MILES SOUTHEAST OF WHEATLAND AND 30 MILES WEST OF WHEATLAND. ALL STORMS WERE MOVING SOUTHEAST AT 20 MILES AN HOUR. PEOPLE IN THE COUNTIES OF ALBANY...PLATTE...GOSHEN...AND LARAMIE SHOULD BE ALERT TO THE POSSIBILTY OF THESE THUNDERSTORMS WHICH CAN PRODUCE BRIEF HEAVY RAIN...SMALL HAIL...STRONG GUSTY WINDS...AND DANGEROUS LIGHTNING. IF Ah THUNDERSTORM APPROACHES...BE PREPARED TO TAKE SHELTER. < DJV
Special weather statement, Aug 3, 3:30 PM MDT, 1 hour 36 minutes before
NEZ001-005-011-032230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 330 PM MDT FRI AUG 3 1990 ...STRONG THUNDERSTORMS PERSISTING OVER THE WEST NEBRASKA PANHANDLE... AT 325 PM MDT STRONG THUNDERSTORMS CONTINUED OVER THE WEST NEBRASKA PANHANDLE...30 MILES SOUTH OF SCOTTSBLUFF NEBRASKA OR JUST EAST OF HARRISBURG NEBRASKA. THE STORMS WERE MOVING SOUTHEAST AT 10 MILES AN HOUR. BRIEF HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DASNGEROUS CLOUD TO GROUND LIGHTNING CAN BE EXPECTED ACROSS BANNER AND NORTHERN KIMBALL AND SOUTHWEST MORRILL COUNTIES OF THE NEBRASKA PANHANDLE UNTIL 430 PM MDT. WIRTH
Special weather statement, Aug 3, 4:34 PM MDT, 32 minutes before
NEZ005-011-042330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 434 PM MDT FRI AUG 3 1990 ...A STRONG THUNDERSTORM IN THE SOUTHERN NEBRASKA PANHANDLE... AT 430 PM MDT A STRONG THUNDERSTORM WAS INDICATED BY RADAR 15 MILES WEST OF SIDNEY NEBRASKA IN WESTERN CHEYENNE COUNTY. THIS STORM WAS MOVING SOUTHEAST AT 10 MPH AND SOULD PASS JUST TO THE WEST OF THE CITY OF SIDNEY. BRIEF HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DANGEROUS LIGHTNING CAN BE EXPECTED ACROSS CHEYENNE COUNTY OF THE NEBRASKA PANHANDLE UNTIL 530 PM MDT. PEEK
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 4:17 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Laramie | 58 min |
| Aug 3, 4:33 PM MDT | Tornado Warning | CYS | Albany | 57 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.