Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 68, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 15, 1991, 5:04 AM CDT for Chippewa County, Kandiyohi County, Swift County, Minnesota. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jun 15, 1991, 5:04 AM CDT (10:04 UTC)
- Expired
- Jun 15, 1991, 5:45 AM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Chippewa County, MN, Kandiyohi County, MN, Swift County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 10.1 hours before the alert went out and 147 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
- 807 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 125 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 KMSP 151002 SVRSTC MNC067-023-151-151045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST CLOUD MN ISSUED BY MINNEAPOLIS MN 504 AM CDT SAT JUN 15 1991 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL MINNESOTA ...WESTERN KANDIYOHI COUNTY IN WEST CENTRAL MINNESOTA ...EASTERN CHIPPEWA COUNTY...EASTERN SWIFT COUNTY AT 500 AM... SEVERE THUNDERSTORMS WERE LOCATED NEAR MURDOCK IN EASTERN SWIFT COUNTY OF WEST CENTRAL MINNESOTA...ABOUT 20 MILES NORTHWEST OF WILLMAR. NICKEL SIZE HAIL WAS REPORTED AT BENSON AT 450 AM. MOVEMENT WAS TO THE EAST AT 30 MILES AN HOUR. CITIES INCLUDED IN THIS WARNING ARE KERKHOVEN...CLARA CITY...AND WILLMAR. 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. DWE
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, Jun 15, 12:56 AM CDT, 4 hours 8 minutes before
SHORT RANGE WEATHER SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1255 AM CDT SAT JUN 15 1991 AT 1225 AM...THUNDERSTORMS WITH HEAVY RAIN WERE MOVING ACROSS SOUTHERN MINNESOTA. THE AREA OF THUNDERSTORMS WAS SOUTH OF A LINE FROM JUST NORTH OF MANKATO TO ABOUT 10 MILES NORTH OF LACROSSE. THE THUNDERSTORMS WITH THE HEAVIEST RAIN AND POSSIBLY PEA TO MARBLE SIZE HAIL AND GUSTY WINDS WERE LOCATED FROM NEAR MANKATO TO WASECA AND FROM ROCHESTER TO 15 MILES EAST OF ROCHESTER. THE STORMS WERE MOVING EAST-NORTHEAST AT ABOUT 25 MILES AN HOUR AND SHOULD BE ALONG A LE SEUR...FARIBAULT TO JUST NORTH OF WINONA LINE BY ABOUT 130 AM. SOME OF THESE STORMS COULD DROP ABOUT AN INCH OF RAIN IN 45 MIINUTES CAUSING PONDING OF WATER IN LOW LYING AREAS AND UNDERPASSES. ELSEWHERE LIGHTER RAIN WAS OVER SOUTHWEST MINNESOTA SOUTH OF A LINE FROM MANKATO TO NEAR REDWOOD FALLS.
Special weather statement, Jun 15, 12:58 AM CDT, 4 hours 6 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1255 AM CDT SAT JUN 15 1991 AT 1225 AM...THUNDERSTORMS WITH HEAVY RAIN WERE MOVING ACROSS SOUTHERN MINNESOTA. THE AREA OF THUNDERSTORMS WAS SOUTH OF A LINE FROM JUST NORTH OF MANKATO TO ABOUT 10 MILES NORTH OF LACROSSE. THE THUNDERSTORMS WITH THE HEAVIEST RAIN AND POSSIBLY PEA TO MARBLE SIZE HAIL AND GUSTY WINDS WERE LOCATED FROM NEAR MANKATO TO WASECA AND FROM ROCHESTER TO 15 MILES EAST OF ROCHESTER. THE STORMS WERE MOVING EAST-NORTHEAST AT ABOUT 25 MILES AN HOUR AND SHOULD BE ALONG A LE SEUR...FARIBAULT TO JUST NORTH OF WINONA LINE BY ABOUT 130 AM. SOME OF THESE STORMS COULD DROP ABOUT AN INCH OOF RAIN IN 45 MINUTES CAUSING PONDING OF WATER IN LOW LYING AREAS AND UNDERPASSES. ELSEWHERE LIGHTER RAIN WAS OVER SOUTHWEST MINNESOTA SOUTH OF A LINE FROM MANKATO TO NEAR REDWOOD FALLS.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 12:06 AM CDT | Severe Thunderstorm Warning | MPX | Mower | 39 min |
| Jun 15, 1:39 AM CDT | Flash Flood Warning | MPX | Wabasha, Winona | 3 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1991Every severe thunderstorm warning in 1991
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.