Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 68, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 17, 1990, 3:57 PM MDT for Grant County, North Dakota. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- Aug 17, 1990, 3:57 PM MDT (21:57 UTC)
- Expired
- Aug 17, 1990, 4:45 PM MDT
- In force
- 48 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Grant 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 12:00Z, 10.0 hours before the alert went out and 85 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
- 519 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 1572 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 7 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 KBIS 172158
SVRBIS
NDC037-172245-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
357 PM MDT FRI AUG 17 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 445 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE SOUTH CENTRAL PART OF NORTH DAKOTA
WEST AND CENTRAL GRANT
AT 355 PM MDT WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM 4 MILES SOUTHEAST OF NEW LEIPZIG...OR 50 MILES
SOUTHWEST OF BISMARCK MOVING EAST AT 10 MPH.
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 THEM LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAIN MAY FLOOD ROADWAYS QUICKLY
SO AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.
THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF SMALL STREAMS
AND UNDERPASSES.
MCMULLENWhat 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 17, 12:53 PM MDT, 3 hours 4 minutes before
NDZ001>018-172000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 155 PM CDT FRI AUG 17 1990 ...THUNDERSTORMS DEVELOPING OVER CENTRAL AND SOUTHWEST NORTH DAKOTA... AT 150 PM CDT...THUNDERSTORMS WERE DEVELOPING OVER CENTRAL AND SOUTHWEST NORTH DAKOTA. THE STRONGEST THUNDERSTORM WAS LOCATED IN WESTERN MORTON COUNTY...35 MILES WEST SOUTHWEST OF BISMARCK. BRIEF HEAVY RAIN AND SMALL HAIL ARE POSSIBLE FROM THESE THUNDERSTORMS. THE THUNDERSTORMS WERE MOVING EAST AT 5 TO 10 MILES AN HOUR.
Special weather statement, Aug 17, 3:50 PM MDT, 7 minutes before
NDZ001>011-172300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 450 PM CDT FRI AUG 17 1990 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM MDT FOR EASTERN HETTINGER COUNTY... AT 450 PM CDT A LARGE AREA OF THUNDERSTORMS WAS MOVING SLOWLY ACROSS SOUTHWEST AND SOUTH CENTRAL NORTH DAKOTA. THE THUNDERSTORM AREA EXTENDED FROM 30 MILES SOUTHWEST OF DICKINSON NEAR AMIDON TO 50 MILES SOUTHEAST OF BISMARCK NEAR STRASBURG IN SOUTHERN EMMONS COUNTY. THE STRONGEST THUNDERSTORMS WERE LOCATED IN EASTERN HETTINGER AND WESTERN GRANT COUNTIES FROM EAST OF MOTT TO NEW LEIPZIG...35 MILES SOUTHEAST OF DICKINSON. THE THUNDERSTORMS WERE MOVING SLOWLY NORTH AND WILL LIKELY PRODUCE LARGE HAIL AND EXTREMELY HEAVY RAIN. OTHER STRONG THUNDERSTORMS WERE LOCATED 25 MILES SOUTH OF DICKINSON NEAR NEW ENGLAND AND 35 MILES SOUTH OF BISMARCK IN SIOUX COUNTY...NORTH OF SELFRIDGE. THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN..1.SMALL HAIL AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING NORTH AT 10 MILES AN HOUR. THE SLOW MOVING THUNDERSTORMS WILL PRODUCE EXTREMELY HEAVY RAIN AND MAY CAUSE SOME LOW LAND FLOODING AND SMALL STREAM RISES. VAN ESS
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 1:55 PM MDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 65 min |
| Aug 17, 3:24 PM MDT | Severe Thunderstorm Warning | BIS | Hettinger | 31 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.