Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 10, NWS Grand Forks, ND

June 11, 1990Cavalier County, Pembina County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 11, 1990, 8:26 PM CDT for Cavalier County, Pembina County, North Dakota. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jun 11, 1990, 8:26 PM CDT (01:26 UTC)
Expired
Jun 11, 1990, 9:30 PM CDT
In force
64 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Cavalier County, ND, Pembina County, ND

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

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.4 hours before the alert went out and 300 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, Bismarck Municip, ND at 00:00Z on 1990-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 172 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, Bismarck Municip, ND at 00:00Z on 1990-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.19395878Sfc1 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
172 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1672 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 120126
SVRFAR
NDC019-067-120230-

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

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 930 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHEAST PART OF NORTH DAKOTA
      EASTERN CAVALIER...PEMBINA

AT 820 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 80 MILES
NORTHWEST OF GRAND FORKS NORTH DAKOTA OR BETWEEN THE TOWNS
OF LANGDON AND WALHALLA NORTH DAKOTA.  THIS THUNDERSTORM WAS
MOVING TO THE EAST AT 15 MILES AN HOUR.

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 11, 8:07 PM CDTSevere Thunderstorm WarningFGFBarnes, LaMoure68 min
Jun 11, 8:07 PM CDTSevere Thunderstorm WarningFGFSteele68 min
Jun 11, 8:54 PM CDTSevere Thunderstorm WarningFGFCass, Ransom66 min
Jun 11, 8:54 PM CDTSevere Thunderstorm WarningFGFTraill66 min
Jun 11, 9:28 PM CDTSevere Thunderstorm WarningFGFCass62 min

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; the sounding from the Mesonet's radiosonde archive.