Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 30, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 1, 1990, 7:59 PM CDT for Griggs County, Steele County, North Dakota. It was in force for 46 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
- Aug 1, 1990, 7:59 PM CDT (00:59 UTC)
- Expired
- Aug 1, 1990, 8:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Griggs County, ND, Steele 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 1, 8:20 PM CDT | Hail 1 | Steele, 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.0 hours before the alert went out and 219 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.
- Mixed-layer CAPE
- 307 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 3074 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFAR 020110 COR
SVRFAR
NDC039-091-020145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED...CORRECTED TIME IN BODY
SEVERE THUNDERSTORM WARNING OF WARNING...
NATIONAL WEATHER SERVICE FARGO ND
759 PM CDT WED AUG 1 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 845 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EAST CENTRAL PART OF NORTH DAKOTA
EASTERN GRIGGS...NORTHWEST STEELE
THIS WARNING INCLUDES THE COOPERSTOWN...SHARON/FINLEY AREAS.
AT 755 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTH OF
COOPERSTOWN NORTH DAKOTA OR 45 MILES NORTH OF VALLEY CITY NORTH
DAKOTA. THIS STORM WAS MOVING NORTHEAST 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.
THIS SLOW MOVING THUNDERSTORM MAY PRODUCE EXTREMELY HEAVY RAIN THAT
CAN QUICKLY FLOOD SMALL STREAMS...LOW LYING AREAS...AND UNDERPASSES.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WERE WATER COVERS THE ROADWAY.
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED IMMEDIATELY.
MOVE TO HIGH GROUND.
EWENSWhat 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
Special weather statement, Aug 1, 6:40 PM CDT, 1 hour 19 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-020030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 625 PM CDT WED AUG 1 1990 ...INTENSE THUNDERSTORMS DEVELOPING RAPIDLY OVER SOUTHEAST NORTH DAKOTA... AT 625 PM CDT AN INTENSE THUNDERSTORM WAS LOCATED 30 MILES SOUTH OF JAMESTOWN NORTH DAKOTA...NEAR LA MOURE NORTH DAKOTA. ANOTHER INTENSE THUNDERSTORM WAS LOCATED 5 MILES WEST OF JAMESTOWN NORTH DAKOTA. THESE THUNDERSTORMS WERE MOVING EAST AT 20 MILES AN HOUR AND WILL BE EAST OF JAMESTOWN NORTH DAKOTA AND NEAR VERONA NORTH DAKOTA BY 730 PM. THESE THUNDERSTORMS COULD PRODUCE BRIEF VERY HEAVY RAIN...HAIL AND STRONG WINDS AND FREQUENT LIGHTNING STRIKES. OTHER RAIN SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN CONTINUED OVER NORTHEAST...CENTRAL AND SOUTHEAST NORTH DAKOTA. THESE THUNDERSTORMS WERE IN AN AREA THAT EXTENDED FROM NORTH OF THE INTERNATIONAL BORDER NORTH OF LANGDON NORTH DAKOTA SOUTH TO 30 MILES SOUTH OF JAMESTOWN NORTH DAKOTA. THESE THUNERSTORMS WERE ALSO MOVING EAST AT 20 MILES AN HOUR. PERSONS NEAR THESE THUNDERSTORMS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER IF NEECESSARY. PLEASE STAY TUNED TO YOUR LOCAL RADIO AND TV STATIONS AND NOAA WEATHER RADIO FOR LATEST INFORMATION ON THESE THUNDERSTORMS. ANDERSEN
Special weather statement, Aug 1, 7:45 PM CDT, 14 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-020130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 725 PM CDT WED AUG 1 1990 ...THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER RAMSEY AND EDDY COUNTIES OF NORTHEAST NORTH DAKOTA... AT 725 PM CDT SEVERAL INTENSE THUNDERSTORMS WERE LOCATED OVER RAMSEY AND EDDY COUNTIES OF NORTHEAST NORTH DAKOTA. THESE INTENSE THUNDERSTORMS WERE MOVING SLOWLY NORTHEAST AT 15 TO 20 MILES AN HOUR AND WERE PRODUCING VERY HEAVY RAIN. LARGE HAIL AND STRONG WINDS ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS. ANOTHER INTENSE THUNDERSTORM WAS LOCATED 20 MILES NORTHWEST OF VALLEY CITY NORTH DAKOTA. THIS THUNDERSTORM WAS ALSO MOVING NORTHEAST AT 20 MILES AN HOUR AND COULD ALSO PRODUCE LARGE HAIL... STRONG WINDS AND BRIEF HEAVY RAIN AS IT MOVES INTO THE HANNAFORD NORTH DAKOTA AREA. OTHER THUNDERSTORMS WERE LOCATED OVER NORTHEAST...CENTRAL AND SOUTHEAST NORTH DAKOTA. THESE THUNDERSTORMS HAD PRODUCED ONE HALF INCH HAIL JUST NORTH OF CAVALIER IN PEMBINA COUNTY OF NORTHEAST NORTH DAKOTA. THESE THUNDERSTORMS WERE ALSO MOVING NORTHEAST AT 15 TO 20 MILES AN HOUR. PERSONS NEAR THESE THUNDERSTORMS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER IF NECESSARY. PLEASE STAY TUNED TO YOUR LOCAL RADIO AND TV STATIONS FOR LATEST INFORMATION ON THESE THUNDERSTORMS. ANDERSEN
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.