Alert archive / Minnesota / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 49, NWS Grand Forks, ND

August 20, 1992Lake of the Woods County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 20, 1992, 5:27 PM CDT for Lake of the Woods County, Minnesota. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Aug 20, 1992, 5:27 PM CDT (22:27 UTC)
Expired
Aug 20, 1992, 6:30 PM CDT
In force
63 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Lake of the Woods County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 10.5 hours before the alert went out and 447 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 12:00Z on 1992-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1992-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
145 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 KINL 202227
SVRINL
MNC077-202330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
527 PM CDT THU AUG 20 1992
 
THE NATIONAL WEATHER SERVICE IN INTERNATIONAL FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  630 PM CDT
FOR PERSONS IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL MINNESOTA
 
   ...CENTRAL LAKE OF THE WOODS COUNTY
 
AT 520 PM A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 15 MILES SOUTH
OF WARROAD OR 75 MILES NORTHNORTHWEST OF BEMIDJI. THIS STORM IS
MOVING EAST AT 25 MPH.
 
AS THIS STORM PASSED THROUGH WANNASKA IT HAD PRODUCED PEA SIZE HAIL. THE
STORM HAS DEVELOPED MUCH STRONGER SINCE THAT REPORT.
 
THIS STORM WILL APPROACH NEAR THE TOWNS OF PITT AND THEN BAUDETTE BY
6 TO 630 PM THIS EVENING.
 
 
 
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 ROAD.
 
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, Aug 20, 4:13 PM CDT, 1 hour 14 minutes before
NDZ012-017-018--202200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FARGO ND
410 PM CDT THU AUG 20 1992

...STRONG THUNDERSTORMS DEVELOP OVER WESTERN BARNES COUNTY...

AT 405 PM...STRONG THUNDERSTORMS HAD RAPIDLY DEVELOPED OVER WESTERN
BARNES COUNTY...15 MILES WEST OF VALLEY CITY. VERY HEAVY RAINS...GUSTY
WINDS...DANGEROUS LIGHTNING...AND HAIL ARE POSSIBLE WITH THESE STORMS.

MOVEMENT WAS TO THE EAST-SOUTHEAST AT 25 MILES AN HOUR.

PERSONS IN BARNES COUNTY...AND ESPECIALLY THE COMMUNITY OF VALLEY CITY
SHOULD BE PREPARED TO TAKE COVER AS THESE STORMS APPROACH.

WELVAERT

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 20, 4:46 PM CDTSevere Thunderstorm WarningFGFPennington59 min
Aug 20, 5:24 PM CDTTornado WarningFGFPolk66 min
Aug 20, 6:00 PM CDTSevere Thunderstorm WarningFGFClearwater60 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1992Every severe thunderstorm warning in 1992

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.