Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 124, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 25, 1991, 3:18 AM CDT for Pope County, Minnesota. It was in force for 42 min.
The area
The counties it named.
The facts
- Issued
- Aug 25, 1991, 3:18 AM CDT (08:18 UTC)
- Expired
- Aug 25, 1991, 4:00 AM CDT
- In force
- 42 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Pope County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 8.3 hours before the alert went out and 166 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
- 2335 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1192 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 12.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTC 250818 SVRSTC MNC121-250900- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 318 AM CDT SUN AUG 25 1991 THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL MINNESOTA ...POPE COUNTY...INCLUDING THE CITIES OF STARBUCK AND GLENWOOD. AT 3:12 AM THIS SUNDAY MORNING...MARBLE SIZE HAIL ALONG WITH VERY HEAVY RAIN AND SMALLER HAIL WAS REPORTED BY THE POPE COUNTY SHERIFFS OFFICE IN AND NEAR THE CITY OF CYRUS MINNESOTA...25 MILES SOUTHWEST OF ALEXANDRIA . THESE THUNDERSTORMS WERE MOVING TO THE EAST SOUTHEAST AT 20 TO 30 MPH. AT 3:16 AM THE SWIFT COUNTY SHERIFF REPORTS HEAVY RAIN AND DANGEROUS LIGHTING IN NORTH CENTRAL SWIFT COUNTY. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. NNNN
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, Aug 25, 2:02 AM CDT, 1 hour 16 minutes before
MNZ010-011-014-WIZ003-006-250800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 155 AM CDT SUN AUG 25 1991 AT 145 AM CDT...STRONG THUNDERSTORMS PRODUCING STRONG WINDS HAD INCREASED IN INTENSITY OVER PARTS OF CENTRAL AND NORTH CENTRAL MINNESOTA SINCE 1240 AM. THE STRONGEST THUNDERSTORM WAS LOCATED NEAR MOTLEY...WHICH IS ABOUT 20 MILES SOUTHWEST OF PEQUOT LAKES. THESE STRONG THUNDERSTORMS ARE MOVING THE THE EAST/SOUTHEAST AT ABOUT 30 MILES AN HOUR AND HAVE A HISTORY OF PRODUCING VERY STRONG GUSTY WINDS AND DANGEROUS LIGHTNING STRIKES. THE TOWNS OF PILLAGER AND FT. RIPLEY SHOULD BE ALERT TO THIS STRONG STORM AND TAKE SHELTER IN A BASEMENT IF A WARNING IS ISSUED. ELSEWHERE...A LARGE AREA OF SHOWERS AND THUNDERSTORMS COVERED MUCH OF THE NORTHERN ONE THIRD OF MINNESOTA EXTENDING NORTHEAST FROM ORTONVILLE TO ALEXANDRIA TO PEQUOT LAKES AND ON TO NORTH OF GRAND RAPIDS. THIS AREA OF PRECIPITATION WAS ALSO MOVING TO THE EAST/SOUTHEAST AT ABOUT 30 MILES AN HOUR. ERICKSEN
Special weather statement, Aug 25, 2:33 AM CDT, 45 minutes before
MNZ014-013-012-250830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 233 AM CDT SUN AUG 25 1991 AT 220 AM THIS SUNDAY MORNING A LARGE AREA OF THUNDERSTORMS SOME CONTAINING VERY STRONG WINDS...HEAVY RAIN AND LIGHTING WAS LOCATED FROM SOUTHWEST OF DULUTH...SOUTHWEST TO THE MINNESOTA-SOUTH DAKOTA BORDER. THESE THUNDERSTORMS WERE MOVING TO THE EAST SOUTHEAST AT 20 TO 30 MPH. THE HEAVIER OF THESE THUNDERSTORMS APPEAR TO BE LOCATED NORTHWEST OF ALEXANDRIA MINNESOTA...SOUTHWEST TO THE SOUTH DAKOTA BORDER NEAR WHEAT MINNESOTA. ANOTHER AREA OF CONCERN IS JUST NORTHWEST OF MILLE LACS LAKE...THIS AREA MAY RECEIVE SOME FAIRLY STRONG AND GUSTY WINDS BY 230 TO 300 AM. PERSONS IN SOUTHWEST TODD...SOUTH WEST POPE...AND NORTH CENTRAL SWIFT COUNTIES OF WEST CENTRAL MINNESOTA AS WELL AS BOATERS AND FISHERPERSONON MILLE LACS LAKE SHOULD KEEP A SHARP EYE ON THE WEATHER FOR THE NEXT SEVERAL HOURS. NNNN
Special weather statement, Aug 25, 2:40 AM CDT, 38 minutes before
MNZ010-011-WIZ003-006-250830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 240 AM CDT SUN AUG 25 1991 ...STRONG THUNDERSTORMS OVER WEST CENTRAL MINNESOTA... POWERFUL THUNDERSTORMS WERE LOCATED JUST SOUTHWEST OF MORRIS IN STEVENS COUNTY OF WEST CENTRAL MINNESOTA AT 235 AM. THESE STORMS MAY PRODUCE HAIL...STRONG GUSTY WINDS...FREQUENT DEADLY LIGHTNING ...AND VERY HEAVY RAINFALL. THEY WERE MOVING TO THE EAST AT 25 TO 30 MILES AN HOUR TOWARD THE GLENWOOD...ALEXANDRIA AREA. IF THREATENING WEATHER APPROACHES YOU SEEK SAFE SHELTER. OTHER THUNDERSTORMS WERE OCCURRING IN A 120 MILE WIDE AREA FROM GRACEVILLE IN WEST CENTRAL MINNESOTA TO DULUTH IN NORTHEAST MINNESOhTA. THEY WERE OCCURRING WITH LIGHT RAINSHOWERS WHICH WERE NORTH OF A LINE FROM NEAR APPLETON TO WILLMAR TO SANDSTONE. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR.
Special weather statement, Aug 25, 2:40 AM CDT, 38 minutes before
MNZ014-013-012-250830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 233 AM CDT SUN AUG 25 1991 AT 220 AM THIS SUNDAY MORNING A LARGE AREA OF THUNDERSTORMS SOME CONTAINING VERY STRONG WINDS...HEAVY RAIN AND LIGHTING WAS LOCATED FROM SOUTHWEST OF DULUTH...SOUTHWEST TO THE MINNESOTA-SOUTH DAKOTA BORDER. THESE THUNDERSTORMS WERE MOVING TO THE EAST SOUTHEAST AT 20 TO 30 MPH. THE HEAVIER OF THESE THUNDERSTORMS APPEAR TO BE LOCATED NORTHWEST OF ALEXANDRIA MINNESOTA...SOUTHWEST TO THE SOUTH DAKOTA BORDER NEAR WHEATON MINNESOTA. ANOTHER AREA OF CONCERN IS JUST NORTHWEST OF MILLE LACS LAKE...THIS AREA MAY RECEIVE SOME FAIRLY STRONG AND GUSTY WINDS BY 230 TO 300 AM. PERSONS IN SOUTHWEST TODD...SOUTHWEST POPE...AND NORTHCENTRAL SWIFT COUNTIES OF WEST CENTRAL MINNESOTA AS WELL AS BOATERS AND FISHERPERSONS ON MILLE LACS LAKE SHOULD KEEP A SHARP EYE ON THE WEATHER FOR THE NEXT SEVERAL HOURS. NNNN
Special weather statement, Aug 25, 2:51 AM CDT, 27 minutes before
MNZ013-250900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 251 AM CDT SUN AUG 25 1991 AT 2:50 AM THIS SUNDAY MORNING...HEAVY THUNDERSTORMS POSSIBLY CONTAINING STRONG WINDS...VERY HEAVY RAIN AND LIGHTING HAVE MOVED INTO WESTERN POPE COUNTY NEAR THE CITY OF CYRUS...25 MILES SOUTHWEST OF ALEXANDRIA MINNESOTA. THESE THUNDERSTORMS WERE MOVING TO THE EAST SOUTHEAST AT 20 TO 30 MPH AND WILL PASS THROUGH POPE COUNTY AND INTO NORTHCENTRAL AND NORTHEAST SWIFT COUNTY BY 3:30 AM THIS SUNDAY MORNING. NNNN
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 6:17 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker | 43 min |
| Aug 25, 9:42 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Sibley | 33 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.