Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 49, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 2, 1990, 11:34 PM MDT for Dunn County, North Dakota. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- Jul 2, 1990, 11:34 PM MDT (05:34 UTC)
- Expired
- Jul 3, 1990, 12:30 AM MDT
- In force
- 56 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Dunn 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, 5.6 hours before the alert went out and 159 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
- 4329 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1521 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 8.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KISN 030534
SVRISN
NDC025-030630-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
1134 PM MDT MON JUL 2 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1230 AM MDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE WEST CENTRAL PART OF NORTH DAKOTA
SOUTH CENTRAL DUNN
AT 1235 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM 20 MILES NORTH OF DICKINSON IN SOUTH CENTRAL DUNN
COUNTY. THE STORM IS MOVING TO THE NORTHEAST AT 40 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 THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE
SHOULD MOVE TO SHELTER...PREFERABLY INSIDE A STRONG BUILDING. ONCE
INSIDE...STAY AWAY FROM WINDOWS.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
RICHMONDWhat 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 2, 10:26 PM MDT, 1 hour 8 minutes before
NDZ001>003-030530 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 1125 PM CDT MON JUL 02 1990 ...TORNADO WATCH IN EFFECT FOR WESTERN AND CENTRAL NORTH DAKOTA UNTIL 3 AM CDT... AT 1120 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN AND POSSIBLE HAIL IN EXTREME SOUTHWESTERN WILLIAMS COUNTY OR 25 MILES SOUTHWEST OF WILLISTON. THIS STORM WAS MOVING NORTHEAST AT 30 MPH AND SHOULD BE MOVING OVER THE WILLISTON AREA BY 1140 PM CDT. STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE CONTINUING OVER DIVIDE COUNTY. THESE THUNDERSTORMS HAVE DECREASED IN INTENSITY SINCE 11 PM CDT VERY HEAVY RAIN HAS BEEN REPORTED WITH THESE STORMS. LOCALIZED FLOODING MAY OCCUR IN THE VICINITY IF THESE STORMS. THE DIVIDE COUNTY SHERIFF REPORTED NEAR ZERO VISIBILITY IN HEAVY RAIN OVER FORTUNA DURING THE PAST HOUR. . IF THREATING WEATHER APPROACHES YOUR AREA ....GO TO A SAFE SHELTER. KENNEDY
Special weather statement, Jul 2, 10:52 PM MDT, 42 minutes before
NDZ001>003-030545 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 1150 PM CDT MON JUL 02 1990 ...TORNADO WATCH IN EFFECT FOR WESTERN AND CENTRAL NORTH DAKOTA UNTIL 3 AM CDT... AT 1145 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN WILLISTON INDICATED A LARGE AREA OF THUNDERSTORMS SOME VERY STRONG WITH HEAVY RAIN...POSSIBLE HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING. THE AREA EXTENDS SOUTHWARD ALONG THE MONTANA NORTH DAKOTA BORDER FROM DIVIDE COUNTY TO SOUTH OF GLENDIVE MT. THE STRONGEST STORMS WERE JUST SOUTHWEST OF WILLISTON AND OVER EASTERN GOLDEN VALLEY COUNTY OF NORTH DAKOTA. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. THE DIVIDE COUNTY SHERIFF REPORTS THAT ND HIGHWAY 5 IS CLOSED DUE TO FLOODING. . IF THREATING WEATHER APPROACHES YOUR AREA ....GO TO A SAFE SHELTER. ROADWAYS AND LOW LYING AREAS MAY BECOME FLOODED. DO NOT ATTEMPT TO CROSS ROADWAYS THAT ARE COVERED WITH WATER. KENNEDY
Special weather statement, Jul 2, 11:00 PM MDT, 34 minutes before
NDZ001>018-030900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 1200 AM CDT TUE JUL 3 1990 ...A FAST MOVING LINE OF INTENSE THUNDERSTORMS CONTINUED TO MOVE ACROSS WESTERN NORTH DAKOTA... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EASTERN NORTH DAKOTA UNTIL 4 AM CDT... ...A TORNADO WATCH REMAINS IN EFFECT FOR WESTERN AND CENTRAL NORTH DAKOTA UNTIL 3 AM CDT...2 AM MDT... AT 12 AM CDT RADAR INDICATED A LINE OF INTENSE THUNDERSTORMS ACROSS WESTERN NORTH DAKOTA FROM BOWMAN TO WILLISTON. THIS LINE WAS MOVING TO THE EAST AT 45 MPH. THESE STORMS WERE PRODUCING HEAVY RAIN AND GUSTY WINDS. EXPECT WIND GUSTS TO OVER 50 MPH AS THESE STORMS APPROACH. REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR CENTRAL AND WESTERN NORTH DAKOTA AND A SEVERE THUNDERSTORM IS IN EFFECT FOR EASTERN NORTH DAKOTA. KAS
Special weather statement, Jul 2, 11:03 PM MDT, 31 minutes before
NDZ001>018-030900-
...CORRECTION TO LAST SENTENSE...
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1200 AM CDT TUE JUL 3 1990
...A FAST MOVING LINE OF INTENSE THUNDERSTORMS CONTINUED TO MOVE
ACROSS WESTERN NORTH DAKOTA...
...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EASTERN NORTH
DAKOTA UNTIL 4 AM CDT...
...A TORNADO WATCH REMAINS IN EFFECT FOR WESTERN AND CENTRAL NORTH
DAKOTA UNTIL 3 AM CDT...2 AM MDT...
AT 12 AM CDT RADAR INDICATED A LINE OF INTENSE THUNDERSTORMS ACROSS
WESTERN NORTH DAKOTA FROM BOWMAN TO WILLISTON. THIS LINE WAS MOVING TO
THE EAST AT 45 MPH. THESE STORMS WERE PRODUCING HEAVY RAIN AND GUSTY
WINDS. EXPECT WIND GUSTS TO OVER 50 MPH AS THESE STORMS APPROACH.
REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR CENTRAL AND WESTERN
NORTH DAKOTA AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EASTERN
NORTHSpecial weather statement, Jul 2, 11:04 PM MDT, 30 minutes before
NDZ001>018-030900-
...CORRECTION TO LAST SENTENSE...
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1200 AM CDT TUE JUL 3 1990
...A FAST MOVING LINE OF INTENSE THUNDERSTORMS CONTINUED TO MOVE
ACROSS WESTERN NORTH DAKOTA...
...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EASTERN NORTH
DAKOTA UNTIL 4 AM CDT...
...A TORNADO WATCH REMAINS IN EFFECT FOR WESTERN AND CENTRAL NORTH
DAKOTA UNTIL 3 AM CDT...2 AM MDT...
AT 12 AM CDT RADAR INDICATED A LINE OF INTENSE THUNDERSTORMS ACROSS
WESTERN NORTH DAKOTA FROM BOWMAN TO WILLISTON. THIS LINE WAS MOVING TO
THE EAST AT 45 MPH. THESE STORMS WERE PRODUCING HEAVY RAIN AND GUSTY
WINDS. EXPECT WIND GUSTS TO OVER 50 MPH AS THESE STORMS APPROACH.
REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR CENTRAL AND WESTERN
NORTH DAKOTA AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EASTERN
NORTH DAKOTA.
KASSpecial weather statement, Jul 2, 11:18 PM MDT, 16 minutes before
NDZ003-004-007-008-030900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 1215 AM CDT TUE JUL 3 1990 ...INTENSE THUNDERSTORM SOUTH OF DICKINSON... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EASTERN NORTH DAKOTA UNTIL 4 AM CDT... ...A TORNADO WATCH REMAINS IN EFFECT FOR WESTERN AND CENTRAL NORTH DAKOTA UNTIL 3 AM CDT...2 AM MDT... AT 1215 AM CDT RADAR INDICATED AN INTENSE THUNDERSTORM 20 MILES SOUTH OF DICKINSON MOVING TO THE EAST AT 45 MPH. THIS STORM WAS PRODUCING BRIEF HEAVY RAIN. AS THIS STORM WAS FAST MOVING...IT HAS THE POTENTIAL TO PRODUCE WIND GUSTS TO OVER 50 MPH ACROSS STARK AND HETTINGER COUNTIES INCLUDING THE CITIES OF DICKINSON...NEW ENGLAND...AND REGENT. REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR CENTRAL AND WESTERN NORTH DAKOTA AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EASTERN NORTH DAKOTA. KAS
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 6:00 PM MDT | Tornado Warning | BIS | Renville, Ward | 30 min |
| Jul 2, 6:30 PM MDT | Tornado Warning | BIS | Ward | 30 min |
| Jul 2, 6:58 PM MDT | Tornado Warning | BIS | Ward | 47 min |
| Jul 2, 7:44 PM MDT | Severe Thunderstorm Warning | BIS | Ward | 61 min |
| Jul 2, 7:59 PM MDT | Tornado Warning | BIS | Ward | 31 min |
| Jul 2, 8:13 PM MDT | Severe Thunderstorm Warning | BIS | McLean | 32 min |
| Jul 2, 8:23 PM MDT | Tornado Warning | BIS | Divide | 37 min |
| Jul 2, 8:35 PM MDT | Severe Thunderstorm Warning | BIS | Ward | 25 min |
| Jul 2, 8:42 PM MDT | Severe Thunderstorm Warning | BIS | McLean | 33 min |
| Jul 2, 9:04 PM MDT | Severe Thunderstorm Warning | BIS | Divide | 56 min |
| Jul 2, 9:30 PM MDT | Severe Thunderstorm Warning | BIS | McLean | 30 min |
| Jul 2, 11:15 PM MDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie | 60 min |
| Jul 3, 12:32 AM MDT | Tornado Warning | BIS | Mountrail | 28 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.