Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 134, NWS Twin Cities, MN

July 11, 1994Lac qui Parle County, Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 11, 1994, 2:54 AM CDT for Lac qui Parle County, Yellow Medicine County, Minnesota. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1994, 2:54 AM CDT (07:54 UTC)
Expired
Jul 11, 1994, 4:00 AM CDT
In force
66 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Lac qui Parle County, MN, Yellow Medicine County, MN

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 7.9 hours before the alert went out and 188 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, Aberdeen, SD at 00:00Z on 1994-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2275 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, Aberdeen, SD at 00:00Z on 1994-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 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
2275 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
1048 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KSTC 110754 RRA
SVRSTC
MNC073-173-110900-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
254 AM CDT MON JUL 11 1994
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL MINNESOTA
 
   ...LAC QUI PARLE COUNTY...YELLOW MEDICINE COUNTY
 
AT 245 PM RADAR INDICATED STRONG THUNDERSTORMS MOVING INTO LAC QUI PARLE
AND YELLOW MEDICINE COUNTIES FROM EASTERN SOUTH DAKOTA. THE STORMS ARE
MOVING TO THE EAST 25 MPH. SOME CITIES IN THE PATH OF THESE STORMS
INCLUDE HAYDENVILLE...MADISON...CANBY...AND ST LEO.
 
 
 
YOU SHOULD MOVE INSIDE A STRONG BUILDING.  DO NOT STAND BY WINDOWS.
DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY
UNTIL THE STORM HAS PASSED.
 
 
PARKIN
NNNN

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 11, 2:16 AM CDT, 38 minutes before
MNZ065-073-110815-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
217 AM CDT MON JUL 11 1994

AT 215 AM...A STRONG THUNDERSTORM WAS LOCATED 20 MILES SOUTH OF REDWOOD
FALLS...BETWEEN WALNUT GROVE AND REVERE. THIS THUNDERSTORM WAS MOVING
EAST AT 15 TO 20 MILES AN HOUR AND WILL MOVE THROUGH REVERE...LAMBERTON
AND SANBORN BY 245 AM. THIS THUNDERSTORM IS CAPABLE OF PRODUCING SMALL
HAIL...GUSTY WINDS AND FREQUENT LIGHTNING. PERSONS I@N THE PATH OF THIS
STORM SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFTEY IF THREATENING
WEATHER APPROACHES.

CARSTENS
Special weather statement, Jul 11, 2:17 AM CDT, 37 minutes before
MNZ065-073-110815-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
217 AM CDT MON JUL 11 1994

AT 215 AM...A STRONG THUNDERSTORM WAS LOCATED 20 MILES SOUTH OF REDWOOD
FALLS...BETWEEN WALNUT GROVE AND REVERE. THIS THUNDERSTORM WAS MOVING
EAST AT 15 TO 20 MILES AN HOUR AND WILL MOVE THROUGH REVERE...LAMBERTON
AND SANBORN BY 245 AM. THIS THUNDERSTORM IS CAPABLE OF PRODUCING SMALL
HAIL...GUSTY WINDS AND FREQUENT LIGHTNING. PERSONS IN THE PATH OF THIS
STORM SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFTEY IF THREATENING
WEATHER APPROACHES.

CARSTENS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 1:57 AM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine48 min
Jul 11, 1:57 AM CDTSevere Thunderstorm WarningMPXBig Stone48 min
Jul 11, 2:49 AM CDTSevere Thunderstorm WarningMPXBrown56 min
Jul 11, 3:30 AM CDTSevere Thunderstorm WarningMPXRedwood, Renville45 min
Jul 11, 3:30 AM CDTSevere Thunderstorm WarningMPXSibley45 min
Jul 11, 3:44 AM CDTSevere Thunderstorm WarningMPXNicollet31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1994Every severe thunderstorm warning in 1994

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.