Alert archive / Wisconsin / Tornado Warnings in 1995

Tornado Warning 31, NWS Twin Cities, MN

August 12, 1995Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Aug 12, 1995, 8:44 PM CDT for Saint Croix County, Wisconsin. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
Aug 12, 1995, 8:44 PM CDT (01:44 UTC)
Expired
Aug 12, 1995, 9:30 PM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 90 km from the middle of the area, began a volume at 01:48 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, 1.7 hours before the alert went out and 93 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 1995-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3775 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 1995-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
3775 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
779 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 130146
TORMSP
WIC109-130230-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
844 PM CDT SAT AUG 12 1995
 
THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  930 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL WISCONSIN
 
   ...ST CROIX COUNTY
 
AT 830 PM... PUBLIC REPORTED A TORNADO BETWEEN NEW RICHMOND AND SOMERSET
IN NORTHERN ST. CROIX COUNTY WISCONSIN. THE STORMS IS ABOUT 35 MILES
EAST NORTHEAST OF MINNEAPOLIS/ST. PAUL. PERSONS IN EMERALD...GLENWOOD
CITY AND BALDWIN SHOULD SEEK SHELTER IMEDIATELY.
FRANZEN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 9:17 PM CDTSevere Thunderstorm WarningMPXDunn43 min
Aug 12, 9:28 PM CDTSevere Thunderstorm WarningMPXPierce47 min
Aug 13, 12:16 AM CDTFlash Flood WarningMPXDunn, Pepin, Pierce3 hr
Aug 13, 5:59 PM CDTSevere Thunderstorm WarningMPXPolk, Saint Croix46 min
Aug 13, 6:45 PM CDTSevere Thunderstorm WarningMPXBarron, Dunn45 min

Nearby

Tornado Warnings in Wisconsin, 1995Every tornado warning in 1995Tornadoes in 1995

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.