Alert archive / Wyoming / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 112, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Sep 6, 1990, 5:03 PM MDT for Laramie County, Wyoming. It was in force for 42 min.
The area
The counties it named.
The facts
- Issued
- Sep 6, 1990, 5:03 PM MDT (23:03 UTC)
- Expired
- Sep 6, 1990, 5:45 PM MDT
- In force
- 42 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.
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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2100 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 29 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 062305
SVRCYS
WYC021-062345-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
503 PM MDT THU SEP 6 1990
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 PM MDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST WYOMING
...SOUTHEASTERN LARAMIE
THIS WARNING INCLUDES THE CITY OF PINE BLUFFS.
AT 5 PM...THUNDERSTORMS PRODUCED WIND GUSTS TO NEAR 60 MILES AN
HOUR ABOUT 15 MILES SOUTHWEST OF ALBIN. THE THUNDERSTORM WERE
MOVING SOUTHEAST AT ABOUT 30 MILES AN HOUR. STRONG WINDS WILL
BE THE PRIMARY THREAT FROM THESE STORMS.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
DASELERWhat 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, Sep 6, 3:05 PM MDT, 1 hour 58 minutes before
WYZ012-016-017-062200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 305 PM MDT THU SEP 6 1990 ...A LINE OF STRONG THUNDERSTORMS WAS DEVELOPING ACROSS SOUTHEAST WYOMING AT 300 PM MDT... AT 300 PM MDT...WEATHER SERVICE RADAR SHOWED A NARROW LINE OF STRONG THUNDERSTORMS DEVLOPING FROM 15 MILES NORTHWEST OF TORRINGTON TO 10 MILES NORTHWEST CHUGWATER. THE STRONGEST STORM WAS JUST NORTHWEST OF LINGLE...WHICH IS 15 MILES NORTHWEST OF TORRINGTON. THE LINE OF STORMS WAS MOVING SOUTHEAST AT 25 MILES AN HOUR. THESE STORMS HAVE HAD A HISTORY OF PRODUCING BRIEF HEAVY RAIN AND FREQUENT LIGHTNING. NO SEVERE WEATHER HAS BEEN REPORTED. THE THUNDERSTORMS WILL CONTINUE ACROSS THE REMAINDER OF PLATTE AND GOSHEN COUNTIES...AND MOVE INTO NORTHERN LARAMIE COUNTY...BY 4 PM MDT. PEOPLE IN THE PATH OF THESE STORMS CAN EXPECT BRIEF HEAVY HEAVY RAIN...DEADLY LIGHTNING AND POSSIBLY SOME SMALL HAIL AND GUSTY WINDS. PEOPLE IN EXTREMEV SOUTHEAST WYOMING PLANNING OUTDOOR ACTIVITIES THE REST OF THIS AFTERNOON SHOULD BE ALERT TO THESE THUNDERSTORMS. EKB
Special weather statement, Sep 6, 3:10 PM MDT, 1 hour 53 minutes before
WYZ012-016-017-062200- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE CHEYENNE WY 310 PM MDT THU SEP 6 1990 ...A LINE OF STRONG THUNDERSTORMS WAS DEVELOPING ACROSS SOUTHEAST WYOMING AT 300 PM MDT... AT 300 PM MDT...WEATHER SERVICE RADAR SHOWED A NARROW LINE OF STRONG THUNDERSTORMS DEVLOPING FROM 15 MILES NORTHWEST OF TORRINGTON TO 10 MILES NORTHWEST CHUGWATER. THE STRONGEST STORM WAS JUST NORTHWEST OF LINGLE...WHICH IS 15 MILES NORTHWEST OF TORRINGTON. THE LINE OF STORMS WAS MOVING SOUTHEAST AT 25 MILES AN HOUR. THESE STORMS HAVE HAD A HISTORY OF PRODUCING BRIEF HEAVY RAIN AND FREQUENT LIGHTNING. NO SEVERE WEATHER HAS BEEN REPORTED. THE THUNDERSTORMS WILL CONTINUE ACROSS THE REMAINDER OF PLATTE AND GOSHEN COUNTIES...AND MOVE INTO NORTHERN LARAMIE COUNTY...BY 4 PM MDT. PEOPLE IN THE PATH OF THESE STORMS CAN EXPECT BRIEF HEAVY RAIN...DEADLY LIGHTNING AND POSSIBLY SOME SMALL HAIL AND GUSTY WINDS. PEOPLE I[N EXTREME SOUTHEAST WYOMING PLANNING OUTDOOR ACTIVITIES THE REST OF THIS AFTERNOON SHOULD BE ALERT TO THESE THUNDERSTORMS. EKB
Special weather statement, Sep 6, 4:11 PM MDT, 52 minutes before
WYZ012-016-017-062300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 410 PM MDT THU SEP 6 1990 ...A LINE OF STRONG THUNDERSTORMS CONTINUES OVER SOUTHEAST WYOMING... AT 400 PM MDT A LINE OF STRONG THUNDERSTORMS CONTINUED OVER THE SOUTHEAST CORNER OF WYOMING. THE STRONGEST STORMS AT THAT TIME WERE FROM 15 MILES SOUTH OF TORRINGTON TO 10 MILES NORTH OF CHEYENNE. THE LINE OF THUNDERSTORMS WAS MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR. AT 350 PM MDT THUNDERSTORMS PRODUCED HEAVY RAIN AND CONSIDERABLE LIGHTNING IN THE WHEATLAND AREA. THE CITY OF WHEATLAND REPORTED POWER OUTAGES FROM THE STORM AS WELL AS A THIRD OF AN INCH OF RAIN IN A SHORT TIME. THESE STORMS IN THE SOUTHEAST CORNER OF WYOMING WILL PRODUCE BRIEF HEAVY RAIN...DANGEROUS LIGHTNING AND GUSTY WINDS THROUGH THE EVENING HOURS. IN ADDITION...A STRONG STORM WAS LOCATED ABOUT 15 MILES WEST OF WHEATLAND. < PEOPLE IN SOUTHEAST WYOMING PLANNING OUTDOOR ACTIVITIES THROUGH EARLY THIS EVENING SHOULD BE ALERT TO THESE THUNDERSTORMS. IF A STORM APPROACHES...TAKE IMMEDIATE SHELTER AS LIGHTNING CAN BE DEADLY. WEILAND
Special weather statement, Sep 6, 4:23 PM MDT, 40 minutes before
NEZ001-005-011-062330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 420 PM MDT THU SEP 6 1990 ...THUNDERSTORMS ARE MOVING ACROSS THE NEBRASKA PANHANDLE... AT 415 PM MDT...RADAR INDICATED THUNDERSTORMS IN THE NEBRASKA PANHANDLE. THE STRONGEST WAS 20 MILES NORTH OF ALLIANCE NEBRASKA IN EASTERN BOX BUTTE COUNTY. THE STORMS WERE MOVING SOUTHEAST AT 25 MPH. OTHER THUNDERTORMS WERE IN EASTERN WYOMING AND SHOULD MOVE INTO BANNER COUNTY OF THE NEBRASKA PANHANDLE BY 5 PM MDT AND KIMBALL COUNTY BY 530 PM. BRIEF HEAVY RAIN...STRONG WIND...AND HAIL ARE POSSIBLE WITH THE STORMS THROUGH THE EARLY EVENING ACROSS THE NEBRASKA PANHANDLE. PLISCHKE
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; the sounding from the Mesonet's radiosonde archive.