Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 87, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 28, 1991, 7:38 PM CDT for Morrison County, Minnesota. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Jun 28, 1991, 7:38 PM CDT (00:38 UTC)
- Expired
- Jun 28, 1991, 8:15 PM CDT
- In force
- 37 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, 0.6 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
- 3476 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 941 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 385 m²/s²
- 0-3 km storm-relative helicity
- 583 m²/s²
- Significant tornado parameter
- 11.6
- Supercell composite
- 41.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTC 290038 SVRSTC MNC097-290115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 738 PM CDT FRI JUN 28 1991 THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL MINNESOTA ...NORTHERN MORRISON COUNTY INCLUDING THE CITIES OF FORT RIPLEY..PILLAGER AND CUSHING. AT 730 PM CDT A SEVERE THUNDERSTORM WAS LOCATED NEAR STAPLES WHICH IS 30 MILES WEST OF BRAINERD. THIS STORM WAS MOVING EAST AT 40 MPH AT WILL AFFECT CUSHING AND PILLAGER AROUNMD 745 PM AND FORT RIPLEY AROUND 800 PM CDT. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. 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, Jun 28, 6:58 PM CDT, 40 minutes before
MNZ016-012-WIZ006-290100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 655 PM CDT FRI JUN 28 1991 ...STRONG THUNDERSTORMS BUILDING ACROSS EAST CENTRAL MINNESOTA AND NORTHWEST WISCONSIN... STRONG THUNDERSTORMS HAVE CONTINUED TO DEVELOPE NORTH AND NORTHEAST OF THE TWIN CITIES ACROSS PARTS OF ISANTI AND CHISAGO COUNTIES OF EASTERN MINNESOTA INTO POLK AND BURNETT COUNTIES OF NORTHWEST WISCONSIN. THESE STRONG THUNDERSTORMS WERE LOCATED FROM AROUND RUSH CITY AND CAMBRIDGE TO NEAR TAYLORS FALLS ON THE MINNESOTA SIDE OF THE ST CROIX RIVER AND FROM CUSHING TO BALSAM LAKE IN ADJACENT WISCONSIN. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING FREQUENT LIGHTNING STRIKES... STRONG GUSTY WINDS AS WELL AS LOCALLLY VERY HEAVY RAINS AS THEY MOVE TO THE NORTHEAST AT AROUND 30 MILES AN HOUR. < A TORNADO WATCH IS IN EFFECT FOR A PORTION OF EAST CENTRAL MINNESOTA INTO MUCH OF NORTHWEST WISCONSIN UNTIL MIDNIGHT. SWANBERG
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 8:38 PM CDT | Severe Thunderstorm Warning | MPX | Mille Lacs | 52 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.