Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 131, 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, 1:57 AM CDT for Lac qui Parle County, Yellow Medicine County, Minnesota. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1994, 1:57 AM CDT (06:57 UTC)
Expired
Jul 11, 1994, 2:45 AM CDT
In force
48 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, 7.0 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 
TTAA00 KMSP 110656 RRA
SVRSTC
MNC011-073-173-110745-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
ISSUED BY MINNEAPOLIS MN
157 AM CDT MON JUL 11 1994
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  245 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL MINNESOTA
 
   ...BIG STONE COUNTY...LAC QUI PARLE COUNTY
   ...YELLOW MEDICINE COUNTY
 
AT 200 AM...A LINE OF SEVERE THUNDERSTORMS WAS MOVING INTO EXTREME
WESTERN MINNESOTA FROM EASTERN SOUTH DAKOTA. THIS LINE OF SEVERE
THUNDERSTORMS WAS MOVING EAST AT 45 MILES AN HOUR AND HAS A HISTORY
OF PRODUCING WINDS OF 60 TO 70 MILES AN HOUR.
 
TOWNS IN THE PATH OF THE THUNDERSTORMS INCLUDE BEARDSLEY...ORTONVILLE...
MADISON AND CANBY. IF YOU ARE IN THE PATH OF THESE STORMS TAKE COVER
NOW! THIS IS A DANGEROUS SITUATION.
 
 
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.
 
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 WarningMPXBig Stone48 min
Jul 11, 2:49 AM CDTSevere Thunderstorm WarningMPXBrown56 min
Jul 11, 2:54 AM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine66 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.