Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 59, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 1991, 6:47 AM CDT for Carver County, McLeod County, Wright County, Minnesota. It was in force for 43 min.
The area
The counties it named.
The facts
- Issued
- May 31, 1991, 6:47 AM CDT (11:47 UTC)
- Expired
- May 31, 1991, 7:30 AM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Carver County, MN, McLeod County, MN, Wright County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 11.8 hours before the alert went out and 34 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
- 802 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 767 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSP 311147 SVRMSP MNC085-171-019-311230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 647 AM CDT FRI MAY 31 1991 THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION S... IN CENTRAL MINNESOTA ...EASTERN MCLEOD COUNTY...SOUTHERN WRIGHT COUNTY IN EAST CENTRAL MINNESOTA ...NORTHERN CARVER COUNTY AT 642 AM...RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF LESTER PRAIRIE...OR ABOUT 40 MILES WEST OF DOWNTOWN MINNEAPOLIS. HAIL UP TO ONE INCH IS POSSIBLE WITH THIS STORM. MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR...AND WILL AFFECT THE CITIES OF LESTER PRAIRIE...WINSTED...WATERTOWN...AND DELANO BY 730 AM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PcROTECTION 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. TDK
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, May 31, 6:37 AM CDT, 10 minutes before
MNZ014-015-016-018-311245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 637 AM CDT FRI MAY 31 1991 ...STRONG THUNDERSTORMS WITH VERY HEAVY RAINS ROLL INTO CENTRAL MINNESOTA... WEATHER RADAR AT 625 AM SHOWED A CLUSTER OF VERY STRONG THUNDERSTORMS ABOUT 50 MILES WEST OF THE TWIN CITIES IN THE COKATO...HUTCHINSON.. AND GLENCOE AREA. AT AROUND 615 AM HAIL...SOME OF IT NEAR DIME SIZE..WAS REPORTED AT CEDAR MILLS IN SOUTHERN MEEKER COUNTY. THIS IS ABOUT 20 MILES SOUTH OF LITCHFIELD. PERSONS IN WRIGHT AND MCLEOD AND WESTERN CARVER COUNTIES SHOUDL BE ALERT TO THE POSSIBILITY OF VERY HEAVY DOWNPOURS AND SOME HAIL FROM THESE THUNDERSTORMS BETWEEN 625 AND 730AM. ANOTHER CLUSTER OF STRONG THUNDERSTORMS WAS LOCATED SOUTHWEST OF THE TWIN CITIES IN THE ST PETER...NICOLETT...WATERVILLE AREA. THESE THUNDERSTORNS WILL BE AFFECTING THE COUTIES OF NICOLLETT..LE SEUER..AND SOUTEHRN SCOTT BETWEEN 625 AND 730 AM. ALL TSHUNDERSTORMS WERE MOVING NORTHEAST AT 20 MPH. PAULSON
Special weather statement, May 31, 6:43 AM CDT, 4 minutes before
MNZ014-311245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 643 AM CDT FRI MAY 31 1991 ...THUNDERSTORMS WITH HEAVY RAIN IN CENTRAL MINNESOTA... AT 640 AM THUNDERSTORMS SOME^ WITH VERY HEAVY RAIN...AND POSSIBLE SMALL HAIL WERE NEAR ST CLOUD AND THEN NORTHWEST TO ALEXANDRIA. THE STRONGEST STORM WAS NEAR ALBANY...15 MILES NORTHWEST OF ST CLOUD. THE STORMS WERE MOVING NORTHEAST AT 25 MPH. NNNN
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:41 AM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 19 min |
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.