Severe Thunderstorm Warning 6, NWS Grand Forks, ND

Issued

May 12, 1986, 2:32 AM CDT (07:32 UTC)

Expired

May 12, 1986, 3:30 AM CDT

In force

58 min

Issued by

NWS Grand Forks, ND

Area

Whole counties

Counties Clay County, MN, Norman County, MN, Cass County, ND

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

000 
TTAA00 KFAR 120732
SVRFAR
NDC017-MNC027-107-120830-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FARGO ND
232 AM CDT MON MAY 12 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 330 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

EAST CENTRAL NORTH DAKOTA...CASS AND CITIES OF FARGO/MOORHEAD
NORTHWEST MINNESOTA...CLAY AND NORMAN

AT 220 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES
NORTHWEST OF FARGO NORTH DAKOTA MOVING TOWARD THE NORTHEAST
AT 25 MILES AN HOUR.

AT 220 AM CDT 3/4 INCH HAIL WAS REPORTED AT AMENIA NORTH DAKOTA
..25 MILES NORTHWEST OF FARGO NORTH DAKOTA.

REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 58 MPH AND/OR HAIL 3/4 OF AN INCH OR LARGER...DEADLY LIGHTNING...
AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING...SO YOU SHOULD BE ON THE LOOKOUT AND BE
PREPARED TO MOVE TO A PLACE OF SAFETY.

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 STORLM PASSES.

THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF SMALL STREAMS
AND UNDERPASSES.

THIS STORM IS ACCOMPANIED BY INTENSE LIGHTNING.

ANDERSEN

In the hours before

STORM REPORT
NATIONAL WEATHER SERVICE FARGO ND
1115 PM CDT SUN MAY 11 1986

TIME    EVENT
900PM   CO OPERATIVE OBSERVER REPORTED 1/2 TO 3/4 INCH HAIL 7 MILES
        NORTHWEST OF CAVALIER NORTH DAKOTA AS WELL AS .85 IN RAIN.

900PM   COURTNEY NORTH DAKOTA, 1 NW, CO OPERATIVE OBSERVER REPORTED 1/4
        INCH HAIL..VERY HEAVY RAIN..NO HAIL.

955PM   20 MILES WEST OF SHARON NORTH DAKOTA..CO OPERATIVE OBSERVER
        REPORTED VERY HEAVY RAIN..NO HAIL..HIGH WINDS 55 TO 60 MPH.

1032PM  1/4 INCH HAIL REPORTED BY AMATUER RADIO OPERATOR IN COOPERSTOWN
        NORTH DAKOTA.

1050PM  ARVILLA NORTH DAKOTA CO OPERATIVE OBSERVER REPORTED 1/4 INCH
        HAIL AND VERY HEAVY RAIN.

1105PM  HANNAFORD NORTH DAKOTA REPORTED HIWAY 1 WAS UNDER 3 TO 4 INCHES
        OF WATER OVER THE ROAD.  JUST SOUTH OF HANNAFORD NORTH DAKOTA
        VISIBILITY REPORTED NEAR ZERO WIND WINDS ESTIMATED 60 TO 70 MPH.
EWENS

STORM REPORT
NATIONAL WEATHER SERVICE FARGO ND
150 AM CDT MON MAY 12 1986

TIME          EVENT

1204 AM CDT...HIGH WIND REPORTED EAST OF GRAFTON ND, NEAR THE RED
              RIVER. WIND SPEEDS OF 40 TO 50 MPH.

1210 AM CDT...REPORT FROM MINNKOTA POWER CO. OF A BARN AND SHED
              DESTROYED ON A FARM 4 MILES SOUTH OF HATTON ND.

1240 AM CDT...SKYWARN SPOTTER REPORTS A TORNADO ON THE GROUND AT
              THOMPSON ND. TRAILER WAS BLOW1N OFF ITS FOUNDATION
              INTO THE DITCH.
SPIES

Severe Thunderstorm Warnings in Minnesota, 1986Severe Thunderstorm Warnings in North Dakota, 1986Every severe thunderstorm warning in 1986

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.