Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 49, NWS Twin Cities, MN

May 29, 1991Dunn County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 29, 1991, 12:06 AM CDT for Dunn County, Wisconsin. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
May 29, 1991, 12:06 AM CDT (05:06 UTC)
Expired
May 29, 1991, 1:00 AM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Dunn County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 5.1 hours before the alert went out and 135 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 290506 RRA
SVRMSP
WIC033-290600-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1206 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
 
   ...DUNN COUNTY
 
AT MIDNIGHT A SEVERE THUNDERSTORM WAS INDICATED BY WEATHER RADAR ALONG
THE ST CROIX AND DUNN COUNTY LINE JUST EAST OF GLENWOOD CITY. THIS STORM
WAS 30 MILES NORTHWEST OF EAU CLAIRE AND WAS MOVING EAST-NORTHEAST AT 30
MILES AN HOUR.
 
THIS STORM WAS ASSOCIATED WITH HEAVY DOWNPOURS AND STRONG WINDS AS IT
MOVED THROUGH ST CROIX COUNTY. TREES AND POWER OUTAGES HAVE BEEN
REPORTED WITH THIS STORM. SOME CITIES IN THE PATH OF THIS STORM INCLUDE
WHEELER..SAND CREEK AND COLFAX.

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, 12:31 AM CDTSevere Thunderstorm WarningMPXBarron44 min
May 29, 12:37 AM CDTSevere Thunderstorm WarningMPXChippewa, Eau Claire, Rusk68 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.