Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 168, NWS Twin Cities, MN

August 6, 1996Polk County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 6, 1996, 11:05 PM CDT for Polk County, Saint Croix County, Wisconsin. It was in force for 55 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 6, 1996, 11:05 PM CDT (04:05 UTC)
Expired
Aug 7, 1996, 12:00 AM CDT
In force
55 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Polk County, WI, Saint Croix County, WI

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.1 hours before the alert went out and 101 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 070408
SVRMSP
MNC025-049-059-WIC093-095-109-070505-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1105 PM CDT TUE AUG 6 1996

* SEVERE THUNDERSTORM WARNING FOR
  CHISAGO COUNTY - EAST CENTRAL MINNESOTA
  GOODHUE COUNTY - SOUTHEAST MINNESOTA
  ISANTI COUNTY - EAST CENTRAL MINNESOTA
  PIERCE COUNTY - WEST CENTRAL WISCONSIN
  POLK COUNTY - NORTHWEST WISCONSIN
  ST CROIX COUNTY - WEST CENTRAL WISCONSIN

* UNTIL 1200 AM CDT
 
* SOME LOCATIONS AFFECTED
    CAMBRIDGE
    BALSAM LAKE
    RIVER FALLS
    ELLSWORTH
    RED WING

* AT 1103 PM CDT...DOPPLER RADAR DETECTED A LINE OF SEVERE
  THUNDERSTORMS EXTENING FROM WEST OF CAMBRIDGE TO   ST PAUL TO
  LAKEVILLE MOVING EAST AT 40 MPH.

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

MILLER

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 7, 12:26 AM CDTSevere Thunderstorm WarningMPXBarron, Chippewa, Dunn, Rusk64 min
Aug 7, 1:31 AM CDTSevere Thunderstorm WarningMPXChippewa, Eau Claire44 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.