Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 129, NWS Twin Cities, MN

August 11, 1995Saint Croix County, Wisconsin; Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 11, 1995, 9:32 PM CDT for Saint Croix County, Wisconsin; Washington County, Minnesota. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Aug 11, 1995, 9:32 PM CDT (02:32 UTC)
Expired
Aug 11, 1995, 10:30 PM CDT
In force
58 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Washington County, MN, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 74 km from the middle of the area, began a volume at 02:32 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, 2.5 hours before the alert went out and 76 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 1995-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3265 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 1995-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 322 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
3265 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
654 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
322 m²/s²
0-3 km storm-relative helicity
532 m²/s²
Significant tornado parameter
10.0
Supercell composite
54.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 120234 RRA
SVRMSP
MNC163-WIC109-120330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
932 PM CDT FRI AUG 11 1995
 
THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MINNESOTA
 
   ...NORTHERN WASHINGTON COUNTY
 
 
IN WEST CENTRAL WISCONSIN
 
   ...WESTERN ST CROIX COUNTY
 
AT 930 PM...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTH
OF HUGO IN WEST CENTRAL WASHINGTON COUNTY. THIS THUNDERSTORM WAS 20
NORTHEAST OF DOWNTOWN ST PAUL.
 
THIS THUNDERSTORM WAS MOVING EAST AT 30 MPH. SOME CITIES IN THE PATH OF
THIS STORM INCLUDE STILLWATER...HUDSON...NEW RICHMOND AND BALDWIN.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM.  PEOPLE IN MOBILE HOMES SHOULD GO
TO A STORM SHELTER.
 
WH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 5:32 AM CDTSevere Thunderstorm WarningMPXDunn58 min
Aug 12, 5:32 AM CDTSevere Thunderstorm WarningMPXSaint Croix30 min
Aug 12, 9:20 AM CDTSevere Thunderstorm WarningMPXChippewa, Dunn40 min
Aug 12, 9:56 AM CDTSevere Thunderstorm WarningMPXChippewa34 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1995Severe Thunderstorm Warnings in Minnesota, 1995Every severe thunderstorm warning 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.