Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 59, NWS Twin Cities, MN

August 10, 1992Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 10, 1992, 12:09 AM CDT for Eau Claire County, Wisconsin. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Aug 10, 1992, 12:09 AM CDT (05:09 UTC)
Expired
Aug 10, 1992, 12:45 AM CDT
In force
36 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Eau Claire County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 5.2 hours before the alert went out and 183 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 1992-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5696 joules per kilogram.LCLEL10008507005003002001001 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 1992-08-10The 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
5696 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
915 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 100510
SVRMSP
WIC035-100545-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1209 AM CDT MON AUG 10 1992
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL 1245 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL WISCONSIN
 
   ...SOUTHERN EAU CLAIRE COUNTY
 
A SEVERE THUNDERSTORM WAS OCCURRING 10 MILES SOUTHEAST OF THE CITY OF
EAU CLAIRE IN EAU CLAIRE COUNTY OF WEST CENTRAL WISCONSIN. LARGE HAIL
AND DAMAGING WINDS ARE EXPECTED WITH THIS STORM. MOVEMENT WAS TO THE
SOUTHEAST AT 20 MILES AN HOUR. CITIES AND TOWNS IN THE PATH OF THIS
STORM INCLUDE FOSTER AND AUGUSTA.
 
WHEN THUNDERSTORMS ARE OCCURRING..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.
NAISTAT

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, Aug 9, 10:53 PM CDT, 1 hour 16 minutes before
MNZ012>019-100430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ ST. PAUL MN
1035 PM CDT SUN AUG 9 1992

...TORNADO WATCH NUMBER 742 IN EFFECT FOR PARTS OF CENTRAL AND SOUTHERN
MINNESOTA INCLUDING THE TWIN CITIES METRO AREA AND WEST CENTRAL
WISCONSIN UNTIL 2 AM CDT MONDAY MORNING...

AT 1035 PM CDT...RADAR INDICATED A 75 MILE WIDE AREA OF STRONG
THUNDERSTORMS FROM PHILLIPS IN NORTH CENTRAL WISCONSIN TO JUST EAST OF
THE TWIN CITIES IN EXTREME WEST CENTRAL WISCONSIN. THE AREA WAS MOVING
TOWARD THE SOUTHEAST AT 20 MPH. DEADLY LIGHTNING...HAIL...AND STRONG
WINDS ARE POSSIBLE WITH THE STRONGER THUNDERSTORMS. BY 1145 PM CDT THE
LEADING EDGE OF THE THUNDERSTORMS WILL EXTEND FROM MEDFORD TO DURAND IN
WISCONSIN.

OTHER THUNDERSTORM WERE LOCATED OVER THE SOUTHERN SUBURBS OF THE TWIN
CITIES...NEAR NEW ULM AND JUST NORTH OF WORTHINGTON. THESE
THUNDERSTORMS WERE DRIFTING

DEADLY LIGHTNING...HAIL...AND WIND GUSTS TO 50 MPH ARE POSSIBLE WITH
THIS THUNDERSTORM. BY 1130 PM CDT THE THUNDERSTORM WILL HAVE CROSSED
THROUGH WHEELER...COLFAX...AND CEDAR FALLS.

REMEMBER...A TORNADO WATCH CONTINUES IN EFFECT FOR WEST CENTRAL
WISCONSIN UNTIL 2 AM MONDAY MORNING.
NAISTAT
Special weather statement, Aug 9, 10:57 PM CDT, 1 hour 12 minutes before
MNZ012>019-100430-

SPECIAL WEATHER STATEMENT...CORRECTED 2ND PARAGRAPH...LAST LINE
NATIONAL WEATHER SERVICE MINNEAPOLIS/ ST. PAUL MN
1035 PM CDT SUN AUG 9 1992

...TORNADO WATCH NUMBER 742 IN EFFECT FOR PARTS OF CENTRAL AND SOUTHERN
MINNESOTA INCLUDING THE TWIN CITIES METRO AREA AND WEST CENTRAL
WISCONSIN UNTIL 2 AM CDT MONDAY MORNING...

AT 1035 PM CDT...RADAR INDICATED A 75 MILE WIDE AREA OF STRONG
THUNDERSTORMS FROM PHILLIPS IN NORTH CENTRAL WISCONSIN TO JUST EAST OF
THE TWIN CITIES IN EXTREME WEST CENTRAL WISCONSIN. THE AREA WAS MOVING
TOWARD THE SOUTHEAST AT 20 MPH. DEADLY LIGHTNING...HAIL...AND STRONG
WINDS ARE POSSIBLE WITH THE STRONGER THUNDERSTORMS. BY 1145 PM CDT THE
LEADING EDGE OF THE THUNDERSTORMS WILL EXTEND FROM MEDFORD TO DURAND IN
WISCONSIN.

OTHER THUNDERSTORM WERE LOCATED OVER THE SOUTHERN SUBURBS OF THE TWIN
CITIES...NEAR NEW ULM AND JUST NORTH OF WORTHINGTON. THESE
THUNDERSTORMS WERE DRIFTING TOWARD THE SOUTH.

DEADLY LIGHTNING...HAIL...AND WIND GUSTS TO 50 MPH ARE POSSIBLE WITH
THIS THUNDERSTORM. BY 1130 PM CDT THE THUNDERSTORM WILL HAVE CROSSED
THROUGH WHEELER...COLFAX...AND CEDAR FALLS.

REMEMBER...A TORNADO WATCH CONTINUES IN EFFECT FOR WEST CENTRAL
WISCONSIN UNTIL 2 AM MONDAY MORNING.
NAISTAT
Local storm report, Aug 9, 11:14 PM CDT, 55 minutes before
PRELIMINARY LOCAL STROM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1111 PM CDT SUN AUG 09 1992

STORM DATA FOR MINNEAPOLIS COUNTY AREAS OF RESPONSIBILITY ON  AUG 9

 TIME           COUNTY...LOCATION AND STATE   CHARACTER OF STORM...DAMAGE
................................................................................ 1030 CDT        EASTERN RUSK COUNTY OF      SEVERAL LARGE TREES DOWN IN
                 NORTHWEST WISCONSIN         THE TOWN OF TONY WHICH IS 4
                                             MILES EAST OF LADYSMITH.
                                             DOWNED TREES ARE BLOCKING
                                             HIGHWAY 8 IN THE TOWN.
                 6                            DAMAGE APPEARED TO BE CAUSED
                                             BY STRONG DOWNBURST OR
                                             STRAIT LINE WINDS.
Local storm report, Aug 9, 11:15 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1111 PM CDT SUN AUG 09 1992

STORM DATA FOR MINNEAPOLIS COUNTY AREAS OF RESPONSIBILITY ON  AUG 9

 TIME           COUNTY...LOCATION AND STATE   CHARACTER OF STORM...DAMAGE
................................................................................ 1030 CDT        EASTERN RUSK COUNTY OF      SEVERAL LARGE TREES DOWN IN
                 NORTHWEST WISCONSIN         THE TOWN OF TONY WHICH IS 4
                                             MILES EAST OF LADYSMITH.
                                             DOWNED TREES ARE BLOCKING
                                             HIGHWAY 8 IN THE TOWN.
             B                                DAMAGE APPEARED TO BE CAUSED
                                             BY STRONG DOWNBURST OR
                                             STRAIT LINE WINDS.
Special weather statement, Aug 9, 11:38 PM CDT, 31 minutes before
MNZ011>019-100600-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1140 PM CDT SUN AUG 9 1992

...TORNADO WATCH NUMBER 742 NO LONGER IN EFFECT IN MINNESOTA...
THE MINNESOTA PORTION OF TORNADO WATCH NUMBER 742 HAS BEEN CANCELED.
NAISTAT
Special weather statement, Aug 9, 11:56 PM CDT, 13 minutes before
MNZ015>019-WIZ006-100545-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS ST. PAUL MN
1150 PM CDT SUN AUG 9 1992

...STRONG THUNDERSTORMS MOVING ACROSS WEST CENTRAL WISCONSIN...

AT 1140 PM...RADAR INDICATED STRONG THUNDERSTORMS FROM RHINELANDER TO
NEAR EAU CLAIRE. THESE STRONG THUNDERSTORMS WERE MOVING TOWARD THE
SOUTHEAST AT 20 MPH. BY 1245 AM...THE LEADING EDGE OF THESE
THUNDERSTORMS WILL EXTEND FROM WAUSAU TO OSSEO. OSSEO IS ABOUT 25 MILES
SOUTHEAST OF EAU CLAIRE.

THESE STRONG THUNDERSTORMS CONTAIN DEADLY LIGHTNING...HEAVY RAIN...AND
OCCASIONALLY HAIL AND STRONG WINDS. REMEMBER A TORNADO WATCH IS IN
EFFECT FOR A LARGE PART OF WISCONSIN UNTIL 5 AM CDT MONDAY MORNIN\G.
NAISTAT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 9:52 PM CDTTornado WarningMPXRusk53 min
Aug 10, 12:39 AM CDTSevere Thunderstorm WarningMPXClark66 min
Aug 10, 12:49 AM CDTSevere Thunderstorm WarningMPXEau Claire41 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1992Every severe thunderstorm warning in 1992

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.