Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 50, NWS Twin Cities, MN

May 29, 1991Barron County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 29, 1991, 12:31 AM CDT for Barron County, Wisconsin. It was in force for 44 min.

The area

The counties it named.

The facts

Issued: May 29, 1991, 12:31 AM CDT (05:31 UTC)
Expired: May 29, 1991, 1:15 AM CDT
In force: 44 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Barron County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 5.5 hours before the alert went out and 152 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 290529
SVRMSP
WIC005-290615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1231 AM CDT WED MAY 29 1991
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 100 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL WISCONSIN
 
   ...EASTERN BARRON COUNTY
 
AT 1220 PM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTHEAST
BARRON 6COUNTY JUST NORTHEAST OF THE TOWN OF RIDGELAND. RIDGELAND IS 30
MILES NORTHWEST OF EAU CLAIRE.
 
THIS THUNDERSTORM WAS MOVING EAST-NORTHEAST AT 30 MILES AN HOUR. SOME
TOWNS IN THE PART OF THIS STORM INCLUDE CHETEK AND CAMERON.

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 17 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 46 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, 49 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

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 10:08 PM CDT	Severe Thunderstorm Warning	MPX	Polk	52 min
May 28, 11:35 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Saint Croix	55 min
May 28, 11:35 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	55 min
May 29, 12:06 AM CDT	Severe Thunderstorm Warning	MPX	Dunn	54 min
May 29, 12:37 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Eau Claire, Rusk	68 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1991 Every 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.