Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 22, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 28, 1991, 9:17 AM CDT for Blue Earth County, Nicollet County, Minnesota. It was in force for 28 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
- May 28, 1991, 9:17 AM CDT (14:17 UTC)
- Expired
- May 28, 1991, 9:45 AM CDT
- In force
- 28 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Blue Earth County, MN, Nicollet County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 28, 9:28 AM CDT | Thunderstorm Wind 52 | Nicollet, MN | |
| May 28, 9:28 AM CDT | Thunderstorm Wind 0 | Blue Earth, MN |
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
Minneapolis, MN (KSTC), launched 12:00Z, 2.3 hours before the alert went out and 85 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
- NaN m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 265 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 281416 SVRRST MNC013-103-281500- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ROCHESTER MINNESOTA ISSUED BY MINNEAPOLIS MN 917 AM CDT TUE MAY 28 1991 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL MINNESOTA ...BLUE EARTH COUNTY...NICOLLET COUNTY AT 912 AM CDT...A LINE OF SEVERE THUNDERSTORMS WAS INDICATED FROM NEAR NICOLLET TO LAKE CRYSTAL...OR 15 MILES WEST OF MANKATO. THE STORMS WERE MOVING EAST AT 40 MILES AN HOUR. SOME CITIES INCLUDED IN THE WARNING ARE NICOLLET...MANKATO AND LAKE CRYSTAL. 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.
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 28, 7:11 AM CDT, 2 hours 6 minutes before
MNZ014-281315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 711 AM CDT TUE MAY 28 1991 ...THUNDERSTORMS WERE MOVING ACROSS CENTRAL MINNESOTA... AT 710 AM CDT RADAR LOCATED A THUNDERSTORM WITH HEAVY RAINFALL NEAR BELGRADE...ABOUT 35 MILES SOUTHWEST OF ST CLOUD MINNESOTA. THE STORM WAS MOVING EAST-NORTHEAST AT 25 MPH AND WILL MOVE INTO COLD SPRING...ABOUT 20 MILES SOUTH OF ST CLOUD AROUND 750 AM. THIS THUNDERSTORM WILL PRODUCE HEAVY RAINS...DANGEROUS LIGHTNING AND POSSIBLE SMALL HAIL. VC NNNN
Special weather statement, May 28, 8:09 AM CDT, 1 hour 8 minutes before
MNZ014-281415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 809 AM CDT TUE MAY 28 1991 ...THUNDERSTORMS CONTINUE OVER CENTRAL MINNESOTA THIS MORNING... AT 808 AM CDT THUNDERSTORMS WERE LOCATED IN AN AREA FROM AVON OR 14 MILES WEST OF ST CLOUD...EXTENDING SOUTH TO NEAR COLD SPRING OR 18 MILES SOUTH OF ST CLOUD. THE THUNDERSTORMS WITH THE HEAVIEST RAINS WERE MOVING EAST AT 25 MPH AND WILL MOVE INTO THE ST CLOUD AREA6 AROUND 830 AM. THESE THUNDERSTORMS WILL PRODUCE HEAVY RAINS...DANGEROUS CLOUD TO GROUND LIGHTNING AND POSSIBLE SMALL HAIL. IF THE STORMS APPROACH YOUR AREA MOVE INDOORS UNTIL THEY PASS...LIGHTNING KILLS. VC NNNN
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 3:12 AM CDT | Severe Thunderstorm Warning | MPX | Renville | 33 min |
| May 28, 8:15 AM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 45 min |
| May 28, 8:28 AM CDT | Severe Thunderstorm Warning | MPX | Brown, Watonwan | 47 min |
| May 28, 9:19 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley | 41 min |
| May 28, 9:19 AM CDT | Severe Thunderstorm Warning | MPX | Renville | 22 min |
| May 28, 9:28 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Waseca | 47 min |
| May 28, 9:47 AM CDT | Severe Thunderstorm Warning | MPX | Rice, Steele | 43 min |
| May 28, 10:10 AM CDT | Severe Thunderstorm Warning | MPX | Dodge, Goodhue | 20 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.