Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 96, NWS Twin Cities, MN

August 9, 1990Clark County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 9, 1990, 4:36 PM CDT for Clark County, Wisconsin. It was in force for 69 min.

The area

The counties it named.

The facts

Issued: Aug 9, 1990, 4:36 PM CDT (21:36 UTC)
Expired: Aug 9, 1990, 5:45 PM CDT
In force: 69 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Clark County, WI

The radar

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

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.6 hours before the alert went out and 201 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: 3 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1257 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: -47 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 KMKE 092139
SVRMKE
WIC019-092245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
436 PM CDT THU AUG 9 1990
 
THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN CENTRAL WISCONSIN
          ...CLARK
 
AT 435 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM SOUTH OF
THORP...ABOUT 60 MILES WEST OF WAUSAU...IN NORTHWEST CLARK COUNTY.
THE THUNDERSTORM IS MOVING SOUTH AT 25 MPH. SOME CITIES IN THE PATH
OF THE STORM IS THORP..WILLARD AND LONGWOOD.
 
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.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
HAASE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 2:28 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	62 min
Aug 9, 5:25 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire	65 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1990 Every 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; the sounding from the Mesonet's radiosonde archive.