Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 3, NWS Grand Forks, ND

June 1, 1990Otter Tail County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 1, 1990, 7:43 PM CDT for Otter Tail County, Minnesota. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Jun 1, 1990, 7:43 PM CDT (00:43 UTC)
Expired
Jun 1, 1990, 8:45 PM CDT
In force
62 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.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 0.7 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 1990-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 860 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 1990-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
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 020043
SVRFAR
MNC111-020145-

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

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 845 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE WEST CENTRAL PART OF MINNESOTA
      OTTER TAIL

AT 735 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES
NORTH OF FERGUS FALLS MINNESOTA MOVING TO THE NORTHEAST 25 MILES
AN HOUR.  ALSO ANOTHER SEVERE THUNDERSTORM WAS LOCATED 25 MILES
NORTH OF ALEXANDRIA MINNESOTA AND WAS MOVING TO THE NORTHEAST
AT 25 MILES AN HOUR AND WILL MOVE INTO SOUTHCENTRAL OTTER TAIL
COUNTY BY 8 PM CDT.  THESE SEVERE THUNDERSTORMS HAVE PRODUCED
GOLFBALL SIZE HAIL AND EXTREMELY HEAVY RAIN.

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 7:09 PM CDTSevere Thunderstorm WarningFGFDouglas, Grant66 min
Jun 1, 8:55 PM CDTSevere Thunderstorm WarningFGFOtter Tail65 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990Every 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.