Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 62, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 26, 1990, 4:33 PM MDT for Slope County, North Dakota. It was in force for 42 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
- Jul 26, 1990, 4:33 PM MDT (22:33 UTC)
- Expired
- Jul 26, 1990, 5:15 PM MDT
- In force
- 42 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Slope 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 |
|---|---|---|---|
| Jul 26, 4:40 PM MDT | Hail 1.75 | Slope, 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 12:00Z, 10.6 hours before the alert went out and 214 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
- 326 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 669 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 106 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 262233
SVRBIS
NDC087-262315-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
433 PM MDT THU JUL 26 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 515 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE SOUTHWEST PART OF NORTH DAKOTA
CENTRAL AND EASTERN SLOPE
AT 430 PM MDT A SEVERE THUNDERSTORM WAS LOCATED IN CENTRAL SLOPE
COUNTY NEAR THE TOWN OF AMIDON. THE THUNDERSTORM WAS MOVING
NORTHEAST AT 25 MILES AND 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
SO 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 SO9 BE ON THE LOOKOUT.
THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY.
VAN ESSWhat 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, Jul 26, 2:33 PM MDT, 2 hours before
TTAA00 KISN2620331>5-262130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 330 AM CDT THU JUL 26 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PORTIONS OF NORTHWEST NORTH DAKOTA AND NORTHEAST MONTANA UNTIL 9 PM CDT.. AT 330 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED SEVERAL INTENSE THUNDERSTORMS OVER EASTERN MONTANA. THE STRONGEST STORM WAS OVER ROOSEVELT COUNTY OR 65 MILES WEST OF WILLISTON. OTHER INTENSE THUNDERSTORMS WERE OVER WIBAUX AND FALLON COIMTIES OF MONTANA OR 75 MILES WEST OF DICKINSON. THE THUNDERSTORMS WERE MOVING NORTH EAST AT 20 MPH. THESE STORMS MAY PRODUCE LARGE HAIL AND STRONG WINDS ALONG WITH VERY HEAVY RAIN WHICH MAY CAUSE LOCALIZED FLOO~DING. KENNEDY IF YOU ARE IN THE PATH OF ANY OF THESE STORMS BE PREPARED FOR POSSIBLE FLOODED ROADWAYS. REMEMBER THAT IT IS DANGEROUS TO CROSS WATER COVERED ROADS. KENNEDY
Special weather statement, Jul 26, 2:35 PM MDT, 1 hour 58 minutes before
NDZ001>004-262200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 230 PM MDT THU JUL 26 1990 ...STRONG THUNDERSTORMS ARE APPROACHING THE MONTANA/NORTH DAKOTA BORDER... AT 225 PM MDT WEATHER RADAR WAS DETECTING A NARROW BAND OF STRONG THUNDERSTORMS 20 MILES WEST OF THE MONTANA/NORTH DAKOTA BORDER FROM 30 MILES WEST OF WILLISTON...SOUTH TO 55 MILES WEST OF BOWMAN. THE THUNDERSTORMS ARE MOVING NORTH NORTHEAST AT 30 MPH AND WILL CROSS INTO EXTREME WESTERN NORTH DAKOTA BY 330 PM MDT. THE STRONGEST THUNDERSTORM MAY PASS NEAR THE TOWN OF BEACH IN GOLDEN VALLEY COUNTY...60 MILES WEST OF DICKINSON. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM MDT FOR THE WESTERN QUARTER OF NORTH DAKOTA. IF THREATENING WEATHER APPROACHES TAKE SHELTER IMMEDIATELY. LEBLANG
Special weather statement, Jul 26, 3:15 PM MDT, 1 hour 18 minutes before
NDZ003>004-007>008-262300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 315 PM MDT THU JUL 26 1990 ...STRONG THUNDERSTORMS WERE MOVING INTO SOUTHWESTERN NORTH DAKOTA... AT 310 PM MDT RADAR INDICATED A LINE OF VERY STRONG THUNDERSTORMS FROM EXTREME SOUTHEAST MONTANA ALONG THE NORTH DAKOTA BORDER TO BEACH. SOME OF THESE THUNDERSTORMS LIKELY CONTAINED HAIL AND STRONG GUSTY WINDS AS WELL AS VERY HEAVY RAIN. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MPH. THESE THUNDERSTORMS WILL BE MOVING INTO SOUTHWESTERN NORTH DAKOTA BY 330 PM MDT. ANOTHER AREA OF STRONG THUNDERSTORMS WERE DEVELOPING NEAR HETTINGER. THESE THUNDERSTORMS CONTAINED VERY HEAVY RAIN...HAIL AND STRONG GUSTY WINDS. MOVEMENT OF THESE STORMS WAS NORTHEAST AT 30 MPH AND WILL BE MOVING THROUGH EASTERN ADAMS AND WESTERN GRANT COUNTIES BY 345 PM MDT. DUE TO THE HEAVY RAINS...FLOODING OF SMALL STREAMS AND LOW LYING AREAS IS LIKELY. PEOPLE ACROSS SOUTHWESTERN NORTH DAKOTA SHOULD KEEP AN EYE TO THE SKY AND TAKE SHELTER SHOULD THE WEATHER LOOK THREATENING. REMEMBER...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF SOUTHWESTERN NORTH DAKOTA UNTIL 9 PM MDT. MCMULLEN
Special weather statement, Jul 26, 3:26 PM MDT, 1 hour 7 minutes before
2620331>4-262230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 425 PM CDT THU JUL 26 1990 ...INTENSE THUNDERSTORM CONTINUE TO MOVE TOWARD WESTERN NORTH DAKOTA... AT 420 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED AN AREA OF INTENSE THUNDERSTORMS OVER WIBAUX AND NORTHERN FALLON COUNTIES OF MONTANA OR 60 MILES WEST OF DICKINSON. AT 245 PM MDT A RADIO STATION 4 MILES NORTH OF BAKER MONTANA REPORTED GOLFBALL SIZE HAIL. THE STORMS HAVE DECREASED IN INTENSITY SINCE THAT TIME. THE STORMS WERE MOVING EAST NORTHEAST AT 15 MPH AND WILL BE MOVING INTO GOLDEN VALLEY COUNTY NORTH DAKOTA BY 445 PM CDT. OTHER STRONG THUNDERSTORMS WERE OVER NORTHEAST MONTANA FROM 45 MILES SOUTHWEST TO 55 MILES NORTHWEST OF WILLISTON AND WERE MOVING NORTHEAST AT 25 MPH. KENNEDY FLOODED ROADWAYS. REMEMBER THAT IT IS DANGEROUS TO CROSS WATER COVERED ROADS. KENNEDY
Special weather statement, Jul 26, 3:34 PM MDT, 59 minutes before
ND001>003-262230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 425 PM CDT THU JUL 26 1990 ...INTENSE THUNDERSTORM CONTINUE TO MOVE TOWARD WESTERN NORTH DAKOTA... AT 420 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED AN AREA OF INTENSE THUNDERSTORMS OVER WIBAUX AND NORTHERN FALLON COUNTIES OF MONTANA OR 60 MILES WEST OF DICKINSON. AT 245 PM MDT A RADIO STATION 4 MILES NORTH OF BAKER MONTANA REPORTED GOLFBALL SIZE HAIL. THE STORMS HAVE DECREASED IN INTENSITY SINCE THAT TIME. THE STORMS WERE MOVING EAST NORTHEAST AT 15 MPH AND WILL BE MOVING INTO GOLDEN VALLEY COUNTY NORTH DAKOTA BY 445 PM CDT. OTHER STRONG THUNDERSTORMS WERE OVER NORTHEAST MONTANA FROM 45 MILES SOUTHWEST TO 55 MILES NORTHWEST OF WILLISTON AND WERE MOVING NORTHEAST AT 25 MPH. KENNEDY FLOODED ROADWAYS. REMEMBER THAT IT IS DANGEROUS TO CROSS WATER COVERED ROADS. KENNEDY
Special weather statement, Jul 26, 3:37 PM MDT, 56 minutes before
ND001>003-262230- SPECIAL WEATHER STATEMENT ...CORRECTED... NATIONAL WEATHER SERVICE WILLISTON ND 425 PM CDT THU JUL 26 1990 ...INTENSE THUNDERSTORM CONTINUE TO MOVE TOWARD WESTERN NORTH DAKOTA... AT 420 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED AN AREA OF INTENSE THUNDERSTORMS OVER WIBAUX AND NORTHERN FALLON COUNTIES OF MONTANA OR 60 MILES WEST OF DICKINSON. AT 245 PM MDT A RADIO STATION 4 MILES NORTH OF BAKER MONTANA REPORTED GOLFBALL SIZE HAIL. THE STORMS HAVE DECREASED IN INTENSITY SINCE THAT TIME. THE STORMS WERE MOVING EAST NORTHEAST AT 15 MPH AND WILL BE MOVING INTO GOLDEN VALLEY COUNTY NORTH DAKOTA BY 445 PM CDT. OTHER STRONG THUNDERSTORMS WERE OVER NORTHEAST MONTANA FROM 45 MILES SOUTHWEST TO 55 MILES NORTHWEST OF WILLISTON AND WERE MOVING NORTHEAST AT 25 MPH. KENNEDY
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 4:27 AM MDT | Severe Thunderstorm Warning | BIS | McKenzie | 63 min |
| Jul 26, 4:01 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 59 min |
| Jul 26, 4:53 PM MDT | Severe Thunderstorm Warning | BIS | Stark | 52 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.