Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 69, NWS Twin Cities, MN

June 18, 1991Redwood County, Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 18, 1991, 2:46 AM CDT for Redwood County, Renville County, Minnesota. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1991, 2:46 AM CDT (07:46 UTC)
Expired
Jun 18, 1991, 3:30 AM CDT
In force
44 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Redwood County, MN, Renville County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 7.8 hours before the alert went out and 123 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 1991-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 314 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 1991-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
314 J/kg
Mixed-layer CIN
-312 J/kg
Mixed-layer LCL
2130 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 180746
SVRMSP
MNC129-127-180830-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
246 AM CDT TUE JUN 18 1991
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  330 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MINNESOTA
 
   ...SOUTHERN RENVILLE COUNTY
 
IN SOUTHWEST MINNESOTA
 
   ...NORTHERN REDWOOD COUNTY
 
AT 245 AM RADAR INDICATED SEVERE THUNDERSTORMS ABOUT 15 MILES WEST OF
REDWOOD FALLS NEAR BELVIEW AND VESTA. THE THUNDERSTORMS WERE MOVING EAST
AT 20 MILES AN HOUR AND SHOULD BE NEAR REDWOOD FALLS BY 300 PM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROZAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:54 AM CDTSevere Thunderstorm WarningMPXLac qui Parle36 min
Jun 18, 8:34 AM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift56 min
Jun 18, 9:03 AM CDTSevere Thunderstorm WarningMPXBenton, Stearns17 min
Jun 18, 9:27 AM CDTSevere Thunderstorm WarningMPXMcLeod, Wright58 min
Jun 18, 9:53 AM CDTTornado WarningMPXMeeker22 min
Jun 18, 10:16 AM CDTSevere Thunderstorm WarningMPXCarver51 min
Jun 18, 10:33 AM CDTSevere Thunderstorm WarningMPXHennepin57 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1991Every severe thunderstorm warning in 1991

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.