Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 145, NWS Twin Cities, MN

August 13, 1995Polk County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 13, 1995, 5:59 PM CDT for Polk County, Saint Croix County, Wisconsin. It was in force for 46 min.

The area

The counties it named.

The facts

Issued: Aug 13, 1995, 5:59 PM CDT (22:59 UTC)
Expired: Aug 13, 1995, 6:45 PM CDT
In force: 46 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Polk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 98 km from the middle of the area, began a volume at 23:00 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 12:00Z, 11.0 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 194 J/kg
Mixed-layer CIN: -328 J/kg
Mixed-layer LCL: 1129 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 132302 RRA
SVRMSP
WIC095-109-132345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
559 PM CDT SUN AUG 13 1995
 
THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL WISCONSIN
 
   ...POLK COUNTY...ST CROIX COUNTY
 
AT 600 PM...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
CROSSING THE ST CROIX RIVER FROM CENTER CITY TO STILLWATER TO HUDSON.
THIS LINE OF THUNDERSTORMS WAS 20 MILES EAST OF DOWNTOWN ST PAUL AND WAS
MOVING EAST AT 25 MPH.
 
TOWNS IN THE PATH OF THIS STORM INCLUDE ST CRIOX FALLS...BALSAM LAKE
...NEW RICHMOND AND BALDWIN. THESE STORMS HAVE A HISTORY OF PRODUCING
WINDS FROM 50 TO 60 MPH AND TORRENTIAL RAINS WITH URBAN FLOODING.
 
WHEN SEVERE THUNDERSTORMS ARE OCCURRING...STAY INSIDE A STRONG
BUILDING.  PROTECT YOURSELF FROM DAMAGING WINDS OR HAIL BY
KEEPING AWAY FROM WINDOWS.  LISTEN TO YOUR RADIO OR TELEVISION...
BUT TURN OFF ALL OTHER ELECTRICAL APPLIANCES.  DO NOT USE THE
PHONE DURING PERIODS OF FREQUENT LIGHTNING.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 8:44 PM CDT	Tornado Warning	MPX	Saint Croix	46 min
Aug 12, 9:17 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	43 min
Aug 12, 9:28 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	47 min
Aug 13, 12:16 AM CDT	Flash Flood Warning	MPX	Dunn, Pepin, Pierce	3 hr
Aug 13, 6:45 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn	45 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1995 Every 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.