Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 53, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 29, 1991, 2:18 AM CDT for Morrison County, Minnesota. It was in force for 27 min.
The area
The counties it named.
The facts
- Issued
- May 29, 1991, 2:18 AM CDT (07:18 UTC)
- Expired
- May 29, 1991, 2:45 AM CDT
- In force
- 27 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Morrison County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 7.3 hours before the alert went out and 139 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
- 674 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 903 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTC 290718 SVRSTC MNC097-290745- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 218 AM CDT WED MAY 29 1991 THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL MINNESOTA ...EASTERN MORRISON COUNTY INCLUDING THE CITIES OF PIERZ AND BUCKMAN. AT 217 AM CDT A SEVERE THUNDERSTORM WAS LOCATED BY RADAR 8 MILES SOUTHEAST OF LITTLE FALLS MINNESOTA...22 MILES NORTH OF ST CLOUD. THE THUNDERSTORM WAS MOVING EAST NORTHEAST AT 45 MPH. 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, May 28, 10:45 PM CDT, 3 hours 33 minutes before
MNZALL-290500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 1045 PM CDT TUE MAY 28 1991 ...TORNADO WATCH NUMBER 416 EXTENDED UNTIL MIDNIGHT FOR PARTS OF SOUTHEAST...SOUTH CENTRAL AND EAST CENTRAL MINNESOTA... THE NATIONAL WEATHER SERVICE HAS EXTENDED TORNADO WATCH NUMBER 416 FOR PARTS OF EAST CENTRAL AND SOUTHEAST MINNESOTA UNTIL MIDNIGHT. THE AREA THAT STILL REMAINS IN THE WATCH IS EAST OF A LINE FROM MORA TO MANKATO TO BLUE EARTH. THIS INCLUDES THE ENTIRE TWIN CITY METRO AREA. THE REST OF THE WATCH WILL EXPIRE AT 11 PM. TORNADO WATCH NUMBER 419 IS STILL IN EFFECT UNTIL 5 AM FOR EXTREME SOUTHEAST MINNESOTA.
Local storm report, May 28, 11:42 PM CDT, 2 hours 36 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE ST CLOUD MN 1145 PM CDT TUE MAY 28 1991 837 PM CDT...3/4 INCH HAIL AT PRINSBURG...15 MILES SOUTHWEST OF WILLMAR. AT PENNOCK 6 MILES NORTHWEST OF WILLMAR. AND AT BLOMKEST...12 MILES SOUTH OF WILLMAR. ALL IN KANDIYOHI CNTY. KRUSE
Special weather statement, May 29, 12:34 AM CDT, 1 hour 44 minutes before
MNZ013-290630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 1234 AM CDT WED MAY 29 1991 ...A SEVERE THUNDERSTORM WATCH FOR CENTRAL MINNESOTA UNTIL 5 AM... AT 1230 AM THUNDERSTORMS WITH VERY HEAVY RAIN...POSSIBLE HAIL...AND FREQUENT LIGHTNING WERE IN LAC QUI PARLE COUNTY NEAR MADISON AND IN SWIFT COUNTY NEAR BENSON. AT 1217 AM THE CITY OF MADISON...55 MILES WEST OF WILLMAR REPORTED 3/4 INCH SIZE HAIL. SINCE THAT RECPORT THE STORMS HAVE WEAKENED SOME WHAT BUT STILL COULD REDEVELOP QUICKLY. THE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 30 MPH. NNNN
Special weather statement, May 29, 1:15 AM CDT, 1 hour 3 minutes before
MNZ014-013-290715- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 115 AM CDT WED MAY 29 1991 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 5 AM FOR THE SOUTHERN THIRD OF MINNESOTA... AT 115 AM CDT A LINE OF THUNDERSTORMS...SOME WITH BRIEF HEAVY RAIN...POSSIBLE HAIL AND FREQUENT LIGHTNING WERE IN NORTHERN LAC QUI PARLE COUNTY OF WEST CENTRAL MINNESOTA AND EXTENDED NORTHEAST TO ALEXANDRIA MINNESOTA. THE STRONGEST THUNDERS&TORM WAS NEAR BROOTEN...45 MILES WEST OF ST CL;OUD. THE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 45 MPH. THE THUNDERSTORMS WILL REACH ELROSA BY 125 AM CDT AND ALBANY BY 140 AM CDT. NNNN
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 8:12 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 48 min |
| May 28, 8:26 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 49 min |
| May 28, 8:28 PM CDT | Tornado Warning | MPX | Redwood | 32 min |
| May 28, 8:51 PM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 54 min |
| May 28, 8:54 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne | 21 min |
| May 28, 8:59 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Isanti | 46 min |
| May 28, 9:02 PM CDT | Severe Thunderstorm Warning | MPX | Meeker | 43 min |
| May 28, 9:25 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley, Wright | 50 min |
| May 28, 9:40 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 50 min |
| May 28, 10:02 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 43 min |
| May 28, 10:10 PM CDT | Severe Thunderstorm Warning | MPX | Nicollet | 35 min |
| May 28, 10:10 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Brown | 30 min |
| May 28, 10:20 PM CDT | Severe Thunderstorm Warning | MPX | Sibley | 40 min |
| May 28, 10:27 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, Scott | 48 min |
| May 28, 10:48 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 27 min |
| May 28, 10:57 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Ramsey, Washington | 63 min |
| May 28, 10:57 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 63 min |
| May 28, 11:11 PM CDT | Severe Thunderstorm Warning | MPX | Rice | 49 min |
| May 28, 11:39 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 36 min |
| May 29, 1:22 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 53 min |
| May 29, 3:25 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Stearns | 35 min |
| May 29, 3:38 AM CDT | Severe Thunderstorm Warning | MPX | Morrison | 37 min |
| May 29, 3:53 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 22 min |
| May 29, 3:58 AM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns | 32 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.