Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 14, NWS Grand Forks, ND

June 11, 1990Clay County, Norman County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 11, 1990, 10:30 PM CDT for Clay County, Norman County, Minnesota. It was in force for 45 min.

The area

The counties it named.

The facts

Issued: Jun 11, 1990, 10:30 PM CDT (03:30 UTC)
Expired: Jun 11, 1990, 11:15 PM CDT
In force: 45 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

Counties Clay County, MN, Norman County, MN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.5 hours before the alert went out and 287 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 307 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 KFAR 120330
SVRFAR
MNC027-107-120415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
1030 PM CDT MON JUN 11 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1115 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHWEST PART OF MINNESOTA
      CLAY...NORMAN

AT 1025 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED FROM
40 MILES NORTH OF FARGO NORTH DAKOTA TO 25 MILES SOUTH OF
FARGO.  THIS LINE OF THUNDERSTORMS WAS MOVING TO THE EAST AT
25 MILES AN HOUR.

SOME TOWNS INCLUDED IN THIS WARNING ARE TWIN VALLEY...FELTON...
HAWLEY...AND BARNESVILLE.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS 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 RAIN MAY FLOOD ROADWAYS QUICKLY
...AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.

INTENSE LIGHTNING IS REPORTED WITH THIS STORM.  IF OUTDOORS...STAY
AWAY FROM HIGH OBJECTS.  MOVE INDOORS IF POSSIBLE.  WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES AND
ELECTRICAL EQUIPMENT.

IF THREATENING WEATHER APPROACHES...YOU SHOULD GO TO A PLACE OF
SAFETY IMMEDIATELY.  REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW
ENFORCEMENT AGENCY AFTER THE STORM PASSES.

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

Local storm report, Jun 11, 10:14 PM CDT, 16 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
8 PM CDT MON JUN 11 1990

TIME      EVENT
615 PM    PUBLIC REPORT OF FUNNEL CLOUD 40 TO 50 MILES SOUTHWEST OF
          GRAND FORKS IN THE COOPERSTOWN AREA.  REPORTED RELAY BY
          GRAND FORKS FLIGHT SERVICE STATION.

620 PM    6 MILES NORTHEAST OF SUTTON NORTH DAKOTA...COOP OBSERVER
          REPORTED VERY HEAVY RAIN...3/8 INCH HAIL...NO WIND...AND
          1.66 INCH RAIN IN 45 MINUTES.

643 PM    COOP OBSERVER REPORTED A FUNNEL CLOUD IN THE ANETA NORTH
          DAKOTA AREA...45 MILES WEST SOUTHWEST GRAND FORKS NORTH
          DAKOTA.

650 PM    GRIGGS COUNTY SHERIFF REPORTED WALL CLOUD WITH ROTATION
          10 MILES NORTH OF COOPERSTOWN NORTH DAKOTA.
.
635 PM TO 705 PM   6 MILES NORTHEAST OF SUTTON NORTH DAKOTA...3/4 TO 1
                   INCH HAIL.  VERY LITTLE WIND.

723 PM    FINLEY NORTH DAKOTA COOP OBSERVER REPORTED 3/4 INCH HAIL.
          1/2 INCH HAIL REPORTED NEAR ANETA NORTH DAKOTA.

755 PM    LA MOURE COUNTY SHERIFF REPORTED FUNNEL CLOUD IN THE LAMOURE
          AREA.

810 PM    COOP OBSERVER AT 1 MILE NORTH OF LITCHVILLE NORTH DAKOTA
          REPORTED A TORNADO TOUCHDOWN 9 MILES SOUTHEAST OF LITCHVILLE.

815 PM    TORNADO REPORTED BY COOP OBSERVER 1 MILE NORTH OF ADRIAN
          NORTH DAKOTA.

840 PM    1 INCH SIZE HAIL REPORTED 1 MILE NORTH OF VALLEY CITY NORTH
          DAKOTA BY COOP OBSERVER.

843 PM    FUNNEL CLOUD REPORTED BY PUBLIC 10 MILES SOUTH OF LANGDON
          IN NORTHEAST NORTH DAKOTA.

850 PM    MAYVILLE NORTH DAKOTA RADIO STATION REPORTED WIND GUSTS TO
          54 MILES AN HOUR.  STEELE COUNTY REPORTED 1 INCH RAIN IN
         FINLEY NORTH DAKOTA ALONG WITH HInGH WINDS...NO DAMAGE REPORTS.
         TRAILL COUNTY SHERIFF REPORTED A MOTORIST EAST OF MAYVILLE
         NORTH DAKOTA HAD A CAR WINDSHIELD DESTROYED BY HAIL.
MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 9:28 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman	62 min
Jun 11, 11:00 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Mahnomen	60 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990 Every severe thunderstorm warning in 1990

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.