Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 74, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 24, 1990, 4:33 PM CDT for Sheridan County, North Dakota. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Aug 24, 1990, 4:33 PM CDT (21:33 UTC)
- Expired
- Aug 24, 1990, 5:30 PM CDT
- In force
- 57 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Sheridan 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, 9.6 hours before the alert went out and 93 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
- 94 J/kg
- Mixed-layer CIN
- -276 J/kg
- Mixed-layer LCL
- 1860 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 76 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 242133
SVRBIS
NDC083-242230-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
433 PM CDT FRI AUG 24 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE CENTRAL PART OF NORTH DAKOTA
CENTRAL AND SOUTHERN SHERIDAN
AT 425 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES
NORTHEAST OF BISMARCK.. .OR MIDWAY BETWEEN REGAN AND MC CLUSKY.
THIS THUNDERSTORM WAS MOVING NORTHEAST AT 15 MILES AN HOUR.
MC CLUSKY IS IN THE PATH OF THIS THUNDERSTORM.
THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF SMALL STREAMS
AND UNDERPASSES.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
Special weather statement, Aug 24, 2:22 PM CDT, 2 hours 11 minutes before
NDZ001>011-241900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 215 PM CDT FRI AUG 24 1990 ...STRONG THUNDERSTORMS ARE MOVING THROUGH CENTRAL NORTH DAKOTA... AT AT 210 PM CDT WEATHER RADAR CONTINUED TO DETECT A LINE OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN AND SMALL HAIL...MOVING EAST AT 15 MPH THROUGH CENTRAL NORTH DAKOTA. THE LINE EXTENDED FROM THE CANADIAN BORDER 70 MILES NORTH OF MINOT TO THE SOUTH DAKOTA BORDER 70 MILES SOUTHEAST OF DICKINSON. THE STRONGEST THUNDERSTORM WAS LOCATED 15 MILES SOUTHWEST OF CARSON... OR 70 MILES SOUTHWEST OF BISMARCK. THIS CELL WAS MOVING NORTHEAST AT 20 MPH AND WILL PASS NEAR THE TOWNS OF CARSON...LARK...AND FLASHER BY 300 PM CDT. THIS CELL LIKELY CONTAINS SMALL HAIL...GUSTY WINDS TO 50 MPH AND VERY HEAVY RAIN. OTHER STRONG THUNDERSTORM CELLS WERE NEAR CENTER AND NEW SALEM. THE ATMOSPHERE IS VERY UNSTABLE OVER NORTH DAKOTA AND THE POTENTIAL FOR SEVERE WEATHER IS HIGH.. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM CDT FOR MOST OF WESTERN AND CENTRAL NORTH DAKOTA. PERSONS SHOULD BE PREPARED TO SEEK SHELTER IF THREATENING WEATHER APPROACHES. LEBLANG
Special weather statement, Aug 24, 2:33 PM CDT, 2 hours before
NDZ003-005-242030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 230 PM CDT FRI AUG 24 1990 ...THUNDERSTORMS DEVELOPING OVER NORTHWESTERN NORTH DAKOTA... AT 225 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED VERY STRONG THUNDERSTORMS 50 MILES SOUTHEAST OF WILLISTON IN NORTHERN DUNN COUNTY. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 20 MPH AND WILL LIKELY MOVE INTO SOUTHERN MOUNTRAIL COUNTY WITHIN THEE NEXT 45 MINUTES. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING DEADLY LIGHTNING STRIKES... STRONG WIND...HAIL AND BRIEF HEAVY RAIN. IF THESE THUNDERSTORMS APPROACH YOUR AREA...SEEK SHELTER INDOORS IMMEDIATELY. MARTIN
Special weather statement, Aug 24, 2:38 PM CDT, 1 hour 55 minutes before
NDZ003-005-242030- SPECIAL WEATHER STATEMENT...CORRECTION TO ADD WATCH... NATIONAL WEATHER SERVICE WILLISTON ND 230 PM CDT FRI AUG 24 1990 ...THUNDERSTORMS DEVELOPING OVER NORTHWESTERN NORTH DAKOTA... AT 225 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED VERY STRONG THUNDERSTORMS 50 MILES SOUTHEAST OF WILLISTON IN NORTHERN DUNN COUNTY. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 20 MPH AND WILL LIKELY MOVE INTO SOUTHERN MOUNTRAIL COUNTY WITHIN THE NEXT 45 MINUTES. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING DEADLY LIGHTNING STRIKES... STRONG WIND...HAIL AND BRIEF HEAVY RAIN. IF THESE THUNDERSTORMS APPROACH YOUR AREA...SEEK SHELTER INDOORS IMMEDIATELY. REPMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR A LARGE PORTION OF CENTRAL AND WESTERN NORTH DAKOTA. THIS WATCH DOES INCLUDE ALL OF DUNN AND MOUNTRAIL COUNTIES. MARTIN
Special weather statement, Aug 24, 3:35 PM CDT, 58 minutes before
NDZ003-005-242130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 330 PM CDT FRI AUG 24 1990 ...THUNDERSTORMS DECREASING OVER NORTHWEST NORTH DAKOTA... AT 325 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED STRONG THUNDERSTORMS 60 MILES NORTHEAST OF WILLISON IN NORTHEASTERN MOUNTRAIL COUNTY...AND 75 MILES SOUTHEAST OF WILLISTON IN NORTHEASTERN DUNMN COUNTY. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 15MPH. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING DEADLY LIGHTNING STRIKES... STRONG WIND...HAIL AND BRIEF HEAVY RAIN. IF THESE THUNDERSTORMS APPROACH YOUR AREA...SEEK SHELTER INDOORS IMMEDIATELY. REMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT/ 700 PM MDT FOR A LARGE PORTION OF CENTRAL AND WESTERN NORTH DAKOTA. THIS WATCH DOES INCLUDE ALL OF MOUNTRAIL AND DUNN COUNTIES. MARTIN
Special weather statement, Aug 24, 3:41 PM CDT, 52 minutes before
NDZ003-005-242130- SPECIAL WEATHER STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE WILLISTON ND 330 PM CDT FRI AUG 24 1990 ...THUNDERSTORMS DECREASING OVER NORTHWEST NORTH DAKOTA... AT 325 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED STRONG THUNDERSTORMS 60 MILES NORTHEAST OF WILLISON IN NORTHEASTERN MOUNTRAIL COUNTY...AND 75 MILES SOUTHEAST OF WILLISTON IN NORTHEASTERN DUNN COUNTY. THESE THUNDERSTORMS HAVE DECREASED IN INTENSITY OVER THE PAST HOUR. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 15MPH. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING DEADLY LIGHTNING STRIKES... STRONG WIND...HAIL AND BRIEF HEAVY RAIN. IF THESE THUNDERSTORMS APPROACH YOUR AREA...SEEK SHELTER INDOORS IMMEDIATELY. REMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT...700 PM MDT FOR A LARGE PORTION OF CENTRAL AND WESTERN NORTH DAKOTA. THIS WATCH DOES INCLUDE ALL OF MOUNTRAIL AND DUNN COUNTIES. MARTIN
Special weather statement, Aug 24, 4:30 PM CDT, 3 minutes before
NDZ003-005-242230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 430 PM CDT FRI AUG 24 1990 ...STRONG THUNDERSTORMS CONTINUE OVER WESTERN NORTH DAKATOA... AT 425 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED A VERY STRONG THUNDERSTORM 80 MILES SOUTHEAST OF WILLISTON IN EXTREME EASTERN DUNN COUNTY...OR 10 MILES EAST OF THE TOWN OF MARSHALL. THIS THUNDERSTORM WAS MOVING TO THE EAST AT 10 MPH. THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAINS...LARGE HAIL...DAMAGING WINDS AND VERY DEADLY LIGHTNING STRIKES. FLOODING OF LOW LYING AREAS ARE POSSIBLE WITH THIS STORM. OTHER THUNDERSTORMS WERE ALSO OCCURRING 60 MILES NORTHEAST OF WILLISTON IN NORTHEASTERN MOUNTRAIL COUNTY...OR 15 MILES NORTHEAST OF THE TOWN OF STANLEY. THESE STORMS WERE MOVING TO THE NORTHEAST AT 20 MPH AND WILL PRODUCE SOME BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING STRIKES. . IF THESE STORMS APPROACH YOUR AREA...SEEK SHELTER IN A SAFE BUILDING. RICHMOND
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 2:51 PM CDT | Severe Thunderstorm Warning | BIS | Morton | 39 min |
| Aug 24, 3:08 PM CDT | Severe Thunderstorm Warning | BIS | Mercer | 52 min |
| Aug 24, 4:05 PM CDT | Severe Thunderstorm Warning | BIS | Mercer, Oliver | 40 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.