Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 172, NWS Twin Cities, MN

August 7, 1996Chippewa County, Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 7, 1996, 1:31 AM CDT for Chippewa County, Eau Claire County, Wisconsin. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 7, 1996, 1:31 AM CDT (06:31 UTC)
Expired
Aug 7, 1996, 2:15 AM CDT
In force
44 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Chippewa County, WI, Eau Claire County, WI

The radar

The La Crosse radar (KARX), 120 km from the middle of the area, began a volume at 06:32 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 6.5 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 1996-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4613 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 1996-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
4613 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
993 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
130 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 070634
SVRMSP
WIC017-035-107-070720-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
131 AM CDT WED AUG 7 1996

* SEVERE THUNDERSTORM WARNING FOR
  EASTERN CHIPPEWA COUNTY - WEST CENTRAL WISCONSIN
  EASTERN EAU CLAIRE COUNTY - WEST CENTRAL WISCONSIN
  EASTERN RUSK COUNTY - NORTHWEST WISCONSIN

* UNTIL 215 AM CDT
 
* SOME LOCATIONS AFFECTED
    GLEN FLORA
    STANLEY
    AUGUSTA
    SHELDON

* AT 130 AM CDT...DOPPLER RADAR DETECTED A LINE OF SEVERE
  THUNDERSTORMS EXTENDING FROM LADYSMITH TO JIM FALLS TO 10 MILES
  EAST OF EAU CLAIRE MOVING EAST AT 30 MPH.

THIS IS A DANGEROUS STORM...WITH DAMAGING WINDS. STAY INDOORS AWAY
FROM WINDOWS.

MILLER

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 7, 12:49 AM CDT, 42 minutes before
MNZ004>096-070650-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1246 AM CDT WED AUG 7 1996

...SEVERE THUNDERSTORM WATCH CANCELLED FOR PORTIONS OF CENTRAL
MINNESOTA...

THE SEVERE WEATHER THREAT HAS ENDED ACROSS THE TWIN CITIES METRO
AREA AS WELL AS ADJOINING PORTIONS OF CENTRAL INTO SOUTH CENTRAL
MINNESOTA.  THEREFORE THE SEVERE THUNDERSTORM WATCH THAT WAS IN
EFFECT UNTIL 4 AM HAS BEEN CANCELLED.

THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 4 AM FOR THE
FOLLOWING COUNTIES...SOUTHERN ST. LOUIS...CARLTON...PINE...GOODHUE
...RICE...WASECA...STEELE...DODGE...OLMSTED...WINONA...FARIBAULT
...FREEBORN...MOWER...FILLMORE AND HOUSTON.

SOME CITIES STILL INCLUDED IN THE WATCH ARE DULUTH...CLOQUET...
ROCHESTER...ALBERT LEA...OWATONNA...AUSTIN AND WINONA.

MBK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 11:05 PM CDTSevere Thunderstorm WarningMPXPierce55 min
Aug 6, 11:05 PM CDTSevere Thunderstorm WarningMPXPolk, Saint Croix55 min
Aug 7, 12:26 AM CDTSevere Thunderstorm WarningMPXBarron, Chippewa, Dunn, Rusk64 min
Aug 7, 1:31 AM CDTSevere Thunderstorm WarningMPXRusk44 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.