Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 10, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jun 26, 1990, 9:15 PM MDT for Dunn County, North Dakota. It was in force for 60 min. 2 reports 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
- Jun 26, 1990, 9:15 PM MDT (03:15 UTC)
- Expired
- Jun 26, 1990, 10:15 PM MDT
- In force
- 60 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 26, 9:30 PM MDT | Hail 1 | Dunn, ND | |
| Jun 26, 9:50 PM MDT | Tornado F0 | Dunn, 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, 3.3 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
- 2715 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1967 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 266 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 18.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jun 26, 6:13 PM MDT, 3 hours 2 minutes before
NDZ001-002-270100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 710 PM CDT TUE JUN 26 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTHWESTERN NORTH DAKOTA UNTIL 12 AM CDT... AT 7 PM CDT WILLISTON RADAR INDICATED A STRONG THUNDERSTORM 30 MILES SOUTHWEST OF WILLISTON..OR 15 MILES NORTHWEST OF SYDNEY MONTANA. THIS STORM WAS MOVING TO THE NORTHEAST AT 20 MPH AND WILL ENTER INTO WESTERN WILLIAMS COUNTY OF NORTH DAKOTA BY 745 PM CDT. ANOTHER STRONG THUNDERSTORM WAS 60 MILES NORTHWEST OF WILLISTON..NEAR THE TOWN OF PLENTYWOOD IN CENTRAL SHERIDAN COUNTY MONTANA. THIS STORM WAS MOVING TO THE SOUTHEAST AT 25 MPH. THESE STORMS COULD PRODUCE BRIEF HEAVY RAINS...GUSTY WIND}S...DANGEROUS LIGHTNING AND SMALL HAIL. LEWIS
Special weather statement, Jun 26, 6:47 PM MDT, 2 hours 28 minutes before
NDZALL-270200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 745 PM CDT TUE JUN 26 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHWEST AND PARTS OF NORTH CENTRAL NORTH DAKOTA UNTIL MIDNIGHT CDT... AT 745 PM CDT THUNDERSTORMS WERE ENTERING NORTHWEST NORTH DAKOTA FROM SASKATCHEWAN. SOME OF THESE THUNDERSTORMS MAY BECOME SEVERE IN NORTH DAKOTA. TEMPERATURE AND HUMIDITY CONDITIONS ACROSS WESTERN AND CENTRAL NORTH DAKOTA ARE VERY FAVORABLE FOR THE FORMATION OF STRONG AND POSSIBLY SEVERE THUNDERSTORMS. PERSONS IN AND NEAR THE WATCH AREA SHOULD BE PREPARED FOR RAPIDLY CHANGING WEATHER CONDITIONS. VAN ESS
Special weather statement, Jun 26, 7:04 PM MDT, 2 hours 11 minutes before
NDZ001-002-270200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 800 PM CDT TUE JUN 26 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTHWESTERN NORTH DAKOTA UNTIL 12 AM CDT... AT 750 PM CDT WILLISTON RADAR INDICATED AN INTENSE THUNDERSTORM 15 MILES SOUTHWEST OF WILLISTON IN EXTREME SOUTHWEST WILLIAMS COUNTY. THIS STORM HAS INTENSIFIED DURING THE PAST HOUR AND WILL PASS NEAR THE TOWN OF TRENTON AROUND 830 PM CDT AND BE IN THE WILLISTON AREA AROUND 9 PM CDT. ANOTHER VERY STRONG THUNDERSTORM WAS 35 MILES NORTHWEST OF WILLISTON.. NEAR THE TOWN OF GRENORA IN NORTHWESTERN WILLIAMS COUNTY. THIS STORM WAS MOVING TO THE SOUTHEAST AT 30 MPH. THESE STORMS COULD PRODUCE BRIEF HEAVY RAINS...GUSTY WINDS...DANGEROUS LIGHTNING AND SMALL HAIL. LEWIS
Special weather statement, Jun 26, 7:56 PM MDT, 1 hour 19 minutes before
NDZALL-270400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 900 PM CDT TUE JUN 26 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHWEST AND PARTS OF NORTH CENTRAL NORTH DAKOTA UNTIL MIDNIGHT CDT... AT 9 PM CDT...THUNDERSTORMS WITH HEAVY RAINS AND STRONG WINDS WERE OCCURRING OVER PARTS OF NORTHWEST NORTH DAKOTA AND WERE MOVING INTO PARTS OF NORTHCENTRAL NORTH DAKOTA...NORTH OF MINOT. SOME OF THESE STORMS MAY BECOME SEVERE BEFORE MIDNIGHT. THE STORMS WERE MOVING SOUTHEAST AT 35 MPH. TEMPERATURE AND HUMIDITY CONDITIONS ACROSS WESTERN AND CENTRAL NORTH DAKOTA ARE VERY FAVORABLE FOR THE FORMATION OF STRONG AND POSSIBLY SEVERE THUNDERSTORMS. PERSONS IN AND NEACR THE WATCH AREA SHOULD BE PREPARED FOR RAPIDLY CHANGING WEATHER CONDITIONS. TURNER
Special weather statement, Jun 26, 8:55 PM MDT, 20 minutes before
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</html>The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 7:41 PM MDT | Severe Thunderstorm Warning | BIS | Williams | 64 min |
| Jun 26, 8:21 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie | 39 min |
| Jun 26, 9:28 PM MDT | Tornado Warning | BIS | Mountrail | 32 min |
| Jun 26, 9:54 PM MDT | Severe Thunderstorm Warning | BIS | McLean | 66 min |
| Jun 26, 10:31 PM MDT | Tornado Warning | BIS | Mercer | 44 min |
| Jun 26, 11:07 PM MDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 68 min |
| Jun 27, 1:43 AM MDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 32 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.