Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 4, NWS Grand Forks, ND

June 1, 1990Otter Tail County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 1, 1990, 8:55 PM CDT for Otter Tail County, Minnesota. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 1, 1990, 8:55 PM CDT (01:55 UTC)
Expired: Jun 1, 1990, 10:00 PM CDT
In force: 65 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Otter Tail County, MN

The radar

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

What was reported inside it

Time	Report	Where	Remark
Jun 1, 10:00 PM CDT	Thunderstorm Wind 0	Otter Tail, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.9 hours before the alert went out and 239 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: 860 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1531 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 020155
SVRFAR
MNC111-020300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
855 PM CDT FRI JUN 1 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE WEST CENTRAL PART OF MINNESOTA
      EASTERN OTTER TAIL

AT 845 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES
NORTH OF ALEXANDRIA MINNESOTA OR AT PARKERS PRAIRE MINNESOTA.
THIS STORM WAS MOVING TO THE NORTHEAST AT 25 MILES AN HOUR AND WILL
BE MOVING INTO THE WADENA MINNESOTA AREA AROUND 930 PM CDT.
ALSO AT 845 PM CDT...AN OBSERVER IN PARKERS PRAIRE REPORTED MARBLE
SIZE THAT WAS BEGINNING TO INCREASE IN SIZE.

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.

REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LITTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT.

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.

MB

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 1, 8:32 PM CDT, 23 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
835 PM CDT FRI JUN 1 1990

TIME      EVENT
700 PM   COOP OBSERVER AT LITCHVILLE NORTH DAKOTA REPORTED EXTREMELY
         HEAVY RAIN AND PEA TO MARBLE SIZE HAIL.

719 PM   GRANT COUNTY MINNESOTA SHERIFFS OFFICE REPORTED GOLF BALL SIZE
         HAIL AT BARRETT MINNESOTA OR 9 MILES SOUTHEAST OF ELBOW LAKE.

729 PM   PEA SIZE HAIL REPORTED IN FERGUS FALLS MINNESOTA BY OTTER TAIL
         COUNTY SHERIFFS OFFICE.

736 PM   COOP OBSERVER 8 MILES EAST OF ENDERLIN NORTH DAKOTA REPORTED
         1 INCH TO 1 1/2 INCH SIZE HAIL.

750 PM   PUBLIC REPORT OF FUNNEL CLOUD 10 MILES SOUTH OF FERGUS FALLS
         MINNESOTA.  REPORT RELAYED BY FERGUS FALLS POLICE DEPARTMENT.
MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 7:09 PM CDT	Severe Thunderstorm Warning	FGF	Douglas, Grant	66 min
Jun 1, 7:43 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	62 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.