Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 133, NWS Twin Cities, MN

September 9, 1990Chippewa County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 9, 1990, 8:03 PM CDT for Chippewa County, Wisconsin. It was in force for 27 min.

The area

The counties it named.

The facts

Issued
Sep 9, 1990, 8:03 PM CDT (01:03 UTC)
Expired
Sep 9, 1990, 8:30 PM CDT
In force
27 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Chippewa 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

Minneapolis, MN (KSTC), launched 00:00Z, 1.1 hours before the alert went out and 184 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 1990-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1409 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 1990-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
1409 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1075 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 100104
SVRMSP
WIC017-100130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
803 PM CDT SUN SEP 9 1990
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN WEST CENTRAL WISCONSIN
          ...SOUTHERN AND EASTERN CHIPPEWA
 
AT 753 AM RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES EASTNORTHEAST
OF EAU CLAIRE...ABOUT 10 MILES NORTH OF CADOT.
LARGE HAIL MAY ACCOMPANY THIS STORM.
 
THE STORM WAS MOVING SOUTHEAST AT 20 MILES AN HOUR.
 
CADOTT...BOYD AND STANLEY ARE IN THE PATH OF THIS STORM.
 
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE. REMEMBER SEVERE THUNDERSTORMS
CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE ADVANCE WARNING
PHILLIPS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 7:34 PM CDTSevere Thunderstorm WarningMPXPepin41 min
Sep 9, 8:13 PM CDTSevere Thunderstorm WarningMPXPepin, Pierce47 min
Sep 9, 8:56 PM CDTSevere Thunderstorm WarningMPXClark34 min
Sep 9, 9:31 PM CDTSevere Thunderstorm WarningMPXClark29 min
Sep 9, 10:00 PM CDTSevere Thunderstorm WarningMPXClark45 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; the sounding from the Mesonet's radiosonde archive.