Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 51, NWS Twin Cities, MN

May 29, 1991Chippewa County, Eau Claire County, Rusk County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 29, 1991, 12:37 AM CDT for Chippewa County, Eau Claire County, Rusk County, Wisconsin. It was in force for 68 min. 1 report 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 29, 1991, 12:37 AM CDT (05:37 UTC)
Expired
May 29, 1991, 1:45 AM CDT
In force
68 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Chippewa County, WI, Eau Claire County, WI, Rusk County, WI

What was reported inside it

TimeReportWhereRemark
May 29, 12:40 AM CDTThunderstorm Wind 0Rusk, WI

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 00:00Z, 5.6 hours before the alert went out and 188 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 1991-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 674 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1991-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMSP 290536
SVRMSP
WIC017-035-107-290645-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1237 AM CDT WED MAY 29 1991
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  130 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION IN WEST CENTRAL WISCONSIN
 
   ...CHIPPEWA COUNTY...EAU CLAIRE COUNTY...RUSK COUNTY
 
AT 1235 AM...A SEVERE THUNDERSTORM WAS LOCATED 25 MILES NORTH OF THE
CITY OF EAU CLAIRE WISCONSIN ON THE RUSK...CHIPPEWA COUNTY LINE. WINDS
TO 60 MILES AN HOUR WERE REPORTED WITH THIS STORM BY A STATE TROOPER.
MOVEMENT WAS TO THE EAST AT 45 TO 50 MPH.  CITIES INCLUDED IN THIS
WARNING ARE EAU CLAIRE...CHIPPEWA FALLS...AND CORNELL...AS WELL AS
LADYSMITH AND WEYERHAUSER.
 
 
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 REOOM 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, 8:14 PM CDT, 4 hours 23 minutes before
MNZ014-290215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
814 PM CDT TUE MAY 28 1991

...A TORNADO WATCH CONTINUES IN EFFECT UNTIL 11 PM...

AT 815 PM THUNDERSTORMS WITH HEAVY RAIN...POSSIBLE SMALL HAIL...AND
FREQUENT LIGHTNING WERE LOCATED 20 MILES SOUTHWEST OF WILLMAR NEAR
CLARA CITY.  ALSO OTHER THUNDERSTORMS EXTENDED FROM LITCHFIELD IN
MEEKER COUNTY TO BECKER IN SHERBURNE COUNTY.

THESE STORMS WERE MOVING NORTHGEAST AT 40 MPH AND WILL BE IN THE
CITIES OF ANNANDALE...MONTICELLO..AND BIG LAKE BY 845 PM.

KRUSE

NNNN
Special weather statement, May 28, 10:45 PM CDT, 1 hour 52 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, 55 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, 3 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

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 28, 10:08 PM CDTSevere Thunderstorm WarningMPXPolk52 min
May 28, 11:35 PM CDTSevere Thunderstorm WarningMPXBarron, Saint Croix55 min
May 28, 11:35 PM CDTSevere Thunderstorm WarningMPXPierce55 min
May 29, 12:06 AM CDTSevere Thunderstorm WarningMPXDunn54 min
May 29, 12:31 AM CDTSevere Thunderstorm WarningMPXBarron44 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.