Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 61, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 31, 1991, 8:42 AM CDT for Pierce County, Wisconsin. It was in force for 33 min.
The area
The counties it named.
The facts
- Issued
- May 31, 1991, 8:42 AM CDT (13:42 UTC)
- Expired
- May 31, 1991, 9:15 AM CDT
- In force
- 33 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Pierce County, WI
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 1.7 hours before the alert went out and 94 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
- 35 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSP 311340 SVRMSP WIC093-311415- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 842 AM CDT FRI MAY 31 1991 THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION IN WEST CENTRAL WISCONSIN ...PIERCE COUNTY AT 830 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM JUST EAST OF RED WING MINNESOTA OR ABOUT 25 MILES SOUTHEAST OF THE TWIN CITIES. RADAR INDICATED THAT THE STORM COULD PRODUCE LARGE HAIL. THE THUNDERSTORM WAS MOVING TO THE NORTHEAST AT 40 MPH TOWARDS THE TOWNS OF DIAMOND BLUFF...ELLSWORTH...AND ELMWOOD. WHEN THUNDERSTORMS ARE EOCCURRING..MOVE INSIDE A STRONG BUILDING DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOS WITH LITTLE OR NO WARNING.
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, 2 hours 5 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, 1 hour 59 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
Special weather statement, May 31, 7:54 AM CDT, 48 minutes before
MNZ014-015-016-311400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 753 AM CDT FRI MAY 31 1991 ...STRONG THUNDERSTORMS SWEEPING ACROSS THE TWIN CITY METRO AREA... AT 750 AM...RADAR INDICATED A LINE OF THUNDERSTORMS ACROSS THE CENTRAL SECTIONS OF THE METROPOLITAN AREA. SOME OF THESE STORMS HAD PRODUCED PEA TO MARBLE SIZE HAIL...ALONG WITH WIND GUSTS OF 40 MPH. ALSO TORRENTIAL RAINS HAVE BEEN CAUSING NEAR ZERO VISIBILITY. AT 750 AM THE LINE RAN FROM NEAR ROGERS IN NORTHERN HENNEPIN COUNTY THEN THROUGH DOWNTOWN MINNEAPOLIS TO JUST SOUTH OF THE MINNESOTA RIVER. THE STORMS WILL CONTINUE TO MOVE NORTHEAST AT 25 TO 30 MPH ACROSS EASTERN HENNEPIN..ANOKA..RAMSEY..WASHINGTON ...AND NORTHERN DAKOTA COUNTIES. THE STORMS WILL MOVE ACROSS THE EASTERN TWIN CITIES AREA BETWEEN 745AM AND 9AM. SOME STREET FLOODING IS ALSO POSSIBLE FROM SOME OF THE STRONGER THUNDERSTORMS. MOTORISTS SHOULD BE ALERT TO THE POSSIBLITY OF WATER STANDING OR FLOWING ACROSS ROADWAYS. WINDS OF 40 TO 50 MPH AND HAIL ARE STILL POSSIBLE FROM THESE THUNDERSTORMS. FINALLY...STORMS SOMETIMES REINTENSIFY SUDDENLY...SO LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. PAULSON
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 9:11 AM CDT | Severe Thunderstorm Warning | MPX | Dunn | 49 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 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.