Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 182, NWS Twin Cities, MN

August 25, 1996Chippewa County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 25, 1996, 4:40 PM CDT for Chippewa County, Wisconsin. It was in force for 65 min. 2 reports 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
Aug 25, 1996, 4:40 PM CDT (21:40 UTC)
Expired
Aug 25, 1996, 5:45 PM CDT
In force
65 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Chippewa County, WI

The radar

The La Crosse radar (KARX), 139 km from the middle of the area, began a volume at 21:40 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.

What was reported inside it

TimeReportWhereRemark
Aug 25, 5:00 PM CDTHail 0.75Chippewa Falls, WI
Aug 25, 5:00 PM CDTHail 1Jim Falls, 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.7 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 12:00Z on 1996-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 902 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 12:00Z on 1996-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 square meters per square second.1939Sfc1 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
902 J/kg
Mixed-layer CIN
-204 J/kg
Mixed-layer LCL
976 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 252141
SVRMSP
WIC017-252245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
440 PM CDT SUN AUG 25 1996

* SEVERE THUNDERSTORM WARNING FOR
  CENTRAL AND SOUTHERN CHIPPEWA COUNTY - WEST CENTRAL WISCONSIN

* UNTIL 545 PM CDT
 
* SOME LOCATIONS AFFECTED
    CHIPPEWA FALLS
    TILDEN
    CADOTT
    BATEMAN

* AT 440 PM CDT DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 20
  MILES NORTH OF EAU CLAIRE NEAR TILDEN MOVING EAST-SOUTHEAST AT 30
  MPH.

THIS IS A DANGEROUS STORM...WITH LARGE HAIL. STAY INDOORS AWAY FROM
WINDOWS.

HOWIESON

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 5:24 PM CDTSevere Thunderstorm WarningMPXEau Claire66 min
Aug 25, 6:15 PM CDTSevere Thunderstorm WarningMPXDunn60 min
Aug 25, 6:25 PM CDTSevere Thunderstorm WarningMPXEau Claire50 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.