Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 1, NWS Twin Cities, MN

April 23, 1990Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 23, 1990, 2:11 AM CDT for Pierce County, Saint Croix County, Wisconsin. It was in force for 34 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
Apr 23, 1990, 2:11 AM CDT (07:11 UTC)
Expired
Apr 23, 1990, 2:45 AM CDT
In force
34 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Pierce County, WI, Saint Croix County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Apr 23, 2:20 AM CDTHail 1Pierce, 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, 7.2 hours before the alert went out and 92 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 1990-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1990-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2792 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 230712
SVRMSP
WIC093-109-230745-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
211 AM CDT MON APR 23 1990
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  245 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN WEST CENTRAL WISCONSIN
          ...PIERCE...NORTHEASTERN ST CROIX
 
AT 200 AM..WEATHER RADAR WAS INDICATING CLUSTERS OF SEVERE
THUNDERSTORMS FROM 40 TO 45 MILES NORTHWEST THROUGH SOUTHWEST
OF EAU CLAIRE OF WEST CENTRAL WISCONSIN.
 
THE SEVERE THUNDERSTORMS WERE LOCATED NEAR THE MISSISSIPPI RIVER FROM
BAY CITY TO HAGER CITY. MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR.
AND WILL BE AFFECTING AREAS NEAR ELLSWORTH AND SPRING VALLEY OF PIERCE
COUNTY.  LARGE HAIL DAMAGING WINDS AND BRIEF HEAVY RAINS ARE POSSIBLE
WITH THESE SEVERE THUNDERSTORMS.
 
THE OTHER CLUTSTER OF SEVERE THUNDERSTORMS WAS LOCATED NORTH OF
BALDWIN ABOUT 40 MILES WEST OF EAU CLAIRE IN WEST CENTRAL WISCONSIN.
THIS CLUSTER WILL MOVE INTO THE DEER PARK AND GLENWOOD CITY OF
NORTHEAST ST CROIX COUNTY DUEING THE NEXT HALF HOUR.  AGAIN LARGE
HAIL..AND BRIEF HEAVY HEAVY RAINS ARE POSSIBLE WITH THESE
THUNDERSTROMS.
DOMBROWSKY
 
 
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 ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HkEAVY 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, Apr 22, 9:59 PM CDT, 4 hours 12 minutes before
SPECIAL WEATHER STATEMENT AND PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
950 PM CDT SUN APR 22 1990

...STRONG THUNDERSTORMS DEVELOPE RAPIDLY ACROSS SOUTHWEST AND
   SOUTH CENTRAL MINNESOTA...

STRONG THUNDERSTORMS HAVE DEVELOPED RAPIDLY SINCE 930 PM AND WERE
CURRENTLY LOCATED BETWEEN HUTCHINSON AND REDWOOD FALLS NEAR THE TOWN
OF HECTOR. THESE THUNDERSTORMS WILL BE PRODUCING PEA TO MARBLE SIZE
HAIL ALONG WITH FREQUENT LIGHTNING STRIKES AS THEY MOVE NORTHEAST
AT 30 MILES AN HOUR.

AREAS NEAR OLIVIA..HUTCHINSON..STEWART AND GLENCOE WILL BE EFFECTED
BY THESE THUNDERSTORMS THROUGH 1030 PM.

ELSEWHERE..OTHER THUNDERSTORMS WERE RUMBLING ACROSS PARTS OF SOUTHWEST
MINNSESOTA FROM NEAR MARSHALL TO WORTHINGTON. HEAVY RAINS AND FREQUENT
LIGHTNING STRIKES HAVE BEEN REPORTED WITH THIS ACTIVITY.
<
MOVEMENT WAS TOWARD THE NORTHEAST AT 30 MILES AN HOUR.
Special weather statement, Apr 22, 11:00 PM CDT, 3 hours 11 minutes before
SPECIAL WEATHER STATEMENT AND PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1055 PM CDT SUN APR 22 1990

...STRONG THUNDERSTORMS RUMBLE ACROSS SOUTHERN MINNESOTA...

STRONG THUNDERSTORMS HAVE BEEN PRODUCING FREQUENT LIGHTNING STRIKES
SOME LOCALLY HEAVY RAINS AND SMALL HAIL ACROSS WIDELY SCATTERED PORTIONS
OF SOUTHWEST INTO CENTRAL MINNESOTA.

AT 1045 PM..THE STRONGEST STORMS WERE LOCATED OVER SOUTHWEST MINNESOTA
FROM NEAR SLAYTON TO JUST WEST OF WINDOM AND THESE THUNDERSTORMS WERE
MOVING TOWARD THE NORTHEAST AT 25 MILES AN HOUR AND SHOULD BE AFFECTING
AREAS SOUTHWEST OF NEW ULM NEAR JEFFERS THROUGH 1130 PM.

ANOTHER AREA OF STRONG THUNDERSTORMS REMAINDED FROM 50 TO 60 MILES
WEST OF MINNEAPOLIS FROM NEAR HUTCHINSON TO OLIVIA. THESE STORMS
WERE ALSO MOVING NORTHEAST AT 25 MILES AN HOUR. THIS AREA OF THUNDER-
STORMS HAD WEAKENED SOMEWHAT SINCE 1015 PM AND IF THEY HOLD TOGETHER
WILL MOVE INTO AREAS FROM SOUTH OF LITCHFIELD TO GLENCOE BY 1130 PM.
<
ELSEWHERE..A FEW SHOWERS AND THUNDERSTORMS HAD DEVELOPED FURTHER
NORTH NEAR WATKINS AND COLD SPRING OR JUST SOUTHWEST OF ST CLOUD.

MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR.
Special weather statement, Apr 23, 12:54 AM CDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT AND PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1250 AM CDT MON APR 23 1990

...STRONG THUNDERSTORMS ACROSS SOUTHERN AND CENTRAL MINNESOTA AND
   FAR WESTERN WISCONSIN...

THUNDERSTORMS CONTINUE ACROSS SCATTERED PORTIONS OF SOUTHERN AND
CENTRAL MINNESOTA AND WERE BEGINING TO MOVE INTO FAR WESTERN SECTIONS
OF WISCONSIN.

AT 1245 PM..STRONG THUNDERSTORMS WERE OCCURRING ALONG THE MISSISSIPPI
RIVER BETWEEN LITTLE FALLS AND ST CLOUD IN THE BOWLUS AND ROYALTON AREAS
OF CENTRAL MINNESOTA. OTHER STRONG THUNDERSTORMS WERE SCATTERED ACROSS
SOUTHWEST MINNESOTA NEAR GRANITE FALLS AND SOUTHWEST OF NEW ULM.

SOME OF THESE STORMS ARE CAPABLE OF PRODUCING PEA TO MARBLE SIZE HAIL
ALONG WITH STRONG GUSTY WINDS AND FREQUENT LIGHTNING STRIKES AS THEY
MOVE TO THE NORTHEAST AT 30 MILES AN HOUR.
<
FURTHER EAST..THUNDERSTORMS WERE DEVELOPING ACROSS SOUTHEAST
MINNESOTA AND WEST CENTRAL WISCONSIN FROM ALONG THE ST CROIX
RIVER NEAR TAYLORS FALLS MINNESOTA..SOUTH THROUGH ELLSWORTH
WISCONSIN AND THEN FURTHER SOUTH TOWARD RED WING AND ROCHESTER
MINNESOTA.

THIS LINE OF THUNDERSTORMS HAS BEEN SHOWING AN INCREASE IN INTENSITY
AS IT MOVES TOWARD THE EAS	T AT 30 MILES AN HOUR.

PERSONS IN WESTERN WISCONSIN AND SOUTHERN MINNESOTA SHOULD
KEEP ABREAST OF THIS DEVELOPING WEATHER SITUATION AND LISTEN FOR
LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 23, 12:56 AM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT AND PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1250 AM CDT MON APR 23 1990

...STRONG THUNDERSTORMS ACROSS SOUTHERN AND CENTRAL MINNESOTA AND
   FAR WESTERN WISCONSIN...

THUNDERSTORMS CONTINUE ACROSS SCATTERED PORTIONS OF SOUTHERN AND
CENTRAL MINNESOTA AND WERE BEGINING TO MOVE INTO FAR WESTERN SECTIONS
OF WISCONSIN.

AT 1245 AM..STRONG THUNDERSTORMS WERE OCCURRING ALONG THE MISSISSIPPI
RIVER BETWEEN LITTLE FALLS AND ST CLOUD IN THE BOWLUS AND ROYALTON AREAS
OF CENTRAL MINNESOTA. OTHER STRONG THUNDERSTORMS WERE SCATTERED ACROSS
SOUTHWEST MINNESOTA NEAR GRANITE FALLS AND SOUTHWEST OF NEW ULM.

SOME OF THESE STORMS ARE CAPABLE OF PRODUCING PEA TO MARBLE SIZE HAIL
ALONG WITH STRONG GUSTY WINDS AND FREQUENT LIGHTNING STRIKES AS THEY
MOVE TO THE NORTHEAST AT 30 MILES AN HOUR.
<
FURTHER EAST..THUNDERSTORMS WERE DEVELOPING ACROSS SOUTHEAST
MINNESOTA AND WEST CENTRAL WISCONSIN FROM ALONG THE ST CROIX
RIVER NEAR TAYLORS FALLS MINNESOTA..SOUTH THROUGH ELLSWORTH
WISCONSIN AND THEN FURTHER SOUTH TOWARD RED WING AND ROCHESTER
MINNESOTA.

THIS LINE OF THUNDERSTORMS HAS BEEN SHOWING AN INCREASE IN INTENSITY
AS IT MOVES TOWARD THE EAST AT 30 MILES AN HOUR.

PERSONS IN WESTERN WISCONSIN AND SOUTHERN MINNESOTA SHOULD
KEEP ABREAST OF THIS DEVELOPING WEATHER SITUATION AND LISTEN FOR
LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 23, 1:50 AM CDT, 21 minutes before
SPECIAL WEATHER STATEMENT AND PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
145 AM CDT MON APR 23 1990

...STRONG THUNDERSTORMS CONTINUE ACROSS SOUTHEAST MINNESOTA AND
   FAR WESTERN WISCONSIN...

AT 140 AM...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM NEAR DANBURY
WISCONSIN SOUTH THROUGH AMERY AND ELLSWORTH TO ACROSS THE MISSISSIPPI
RIVER TOWARD RED WING AND LAKE CITY TO ROCHESTER.

SOME OF THESE STORMS ARE CAPABLE OF PRODUCING PEA TO MARBLE SIZE HAIL
ALONG WITH STRONG GUSTY WINDS AND FREQUENT LIGHTNING STRIKES..ALSO DUE TO
THE SLOW EASTWARD MOVEMENT OF THE LINE AT ONLY 10 MILES AN HOUR LOCALLY
HEAVY RAINFALL IS LIKELY.

ELSEWHERE..SHOWERS AND THUNDERSTORMS CONTIKNUED OVER SOUTHCENTRAL AND
CENTRAL MINNESOTA.  THE STRONGEST STORMS WERE LOCATED BETWEEN ST. CLOUD
AND LAKE MILLE LACS FROM NEAR FOLEY TO PIERZ. THIS ACTIVITY ALSO MOVING
NORTHEAST 30 MPH.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 2:32 AM CDTSevere Thunderstorm WarningMPXPierce28 min
Apr 23, 2:41 AM CDTSevere Thunderstorm WarningMPXPolk34 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1990Every severe thunderstorm warning in 1990

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.