Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 5, NWS Grand Forks, ND

June 1, 1990Cass County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 1, 1990, 9:32 PM CDT for Cass County, North Dakota. It was in force for 58 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, 9:32 PM CDT (02:32 UTC)
Expired
Jun 1, 1990, 10:30 PM CDT
In force
58 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Cass County, ND

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

TimeReportWhereRemark
Jun 1, 10:22 PM CDTHail 0.75Cass, ND

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

Aberdeen, SD (KHON), launched 00:00Z, 2.5 hours before the alert went out and 243 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, Aberdeen, SD at 00:00Z on 1990-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1812 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, Aberdeen, SD at 00:00Z on 1990-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
1812 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1129 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
1.1
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 020232
SVRFAR
NDC017-020330-

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

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE EAST CENTRAL PART OF NORTH DAKOTA
      CASS...THE CITIES OF FARGO/MOORHEAD

AT 925 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
FROM 30 MILES NORTHWEST TO 20 MILES SOUTHWEST OF FARGO NORTH
DAKOTA.  THIS LINE OF THUNDERSTORMS WAS MOVING TO THE NORTHEAST
AT 25 MILES AN HOUR.

AT 920 PM CDT...WIND DAMAGE WAS REPORTED AT THE NDSU SEED FARM
IN CASSELTON NORTH DAKOTA OR 20 MILES WEST OF FARGO.

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...YOUP 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, 1 hour 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

Nearby

Severe Thunderstorm Warnings in North Dakota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.