Alert archive / North Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 41, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jun 20, 1986, 8:07 PM MDT for Hettinger County, Stark County, North Dakota. It was in force for 38 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 20, 1986, 8:07 PM MDT (02:07 UTC)
- Expired
- Jun 20, 1986, 8:45 PM MDT
- In force
- 38 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
Counties Hettinger County, ND, Stark 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 20, 8:10 PM MDT | Thunderstorm Wind 52 | Hettinger, ND | |
| Jun 20, 8:40 PM MDT | Thunderstorm Wind 52 | Stark, 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, 2.1 hours before the alert went out and 143 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
- 914 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.6
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 20, 5:07 PM MDT, 3 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 505 PM MDT FRI JUN 20 1986 ...SEVERE THUNDERSTORM WATCH UNTIL 11PM MDT FOR SOUTHWEST NORTH DAKOTA.. AT 5 PM MDT A LINE OF STRONG THUNDERSTORMS HAD DEVELOPED IN SOUTHEAST MONTANA. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MPH AND WILL ENTER EXTREME SOUTHWEST AND WEST CENTRAL NORTH DAKOTA BY 6 PM MDT. VAN ESS
Special weather statement, Jun 20, 5:23 PM MDT, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 620 PM CDT FRI JUN 20 1986 ...INTENSE THUNDERSTORMS MOVING INTO WEST CENTRAL NORTH DAKOTA... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1100 PM MDT FOR PORTIONS OF WEST CENTRAL NORTH DAKOTA TO INCLUDE THE COUNTIES OF GOLDEN VALLEY.. BILLINGS AND DUNN. AT 615 PM CDT RADAR INDICATED AN INTENSE THUNDERSTORM IN SOUTHEAST DAW- SON COUNTY OF EASTERN MONTANA ABOUT 15 MILES SOUTHEAST OF GLENDIVE. MOVEMENT WAS EAST AT 30 MPH. VERY HEAVY RAIN..FREQUENT LIGHTNING STRIKES..HAIL AND GUSTY WINDS CAN BE EXPECTED WITH THESE THUNDERSTORMS. NIELSEN
Special weather statement, Jun 20, 6:09 PM MDT, 1 hour 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 610 PM MDT FRI JUN 20 1986 ...SEVERE THUNDERSTORM WATCH UNTIL 11PM MDT FOR SOUTHWEST NORTH DAKOTA.. AT 605 PM MDT STRONG THUNDERSTORMS WERE MOVING INTO WEST CENTRAL NORTH DAKOTA AND INTO THE SOUTHWEST CORNER OF THE STATE. THE STRONGEST THUNDERSTORM WAS LOCATED JUST WEST OF BEACH IN GOLDEN VALLEY..A SEVERE THUNDERSTORM WARNING CONTINUES IN EFFECT FOR THAT AREA UNTIL 620 PM MDT. STRONG THUNDERSTORMS WERE ENTERING EXTREME WESTERN SLOPE AND BOWMAN COUNTIES. HAIL AND STRONG WINDS CAN BE EXPECTED FROM THESE THUNDERSTORMS AS THEY MOVE EAST AT 25 MPH. VAN ESS
Special weather statement, Jun 20, 6:51 PM MDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 650 PM MDT FRI JUN 20 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1100 PM MDT FOR PARTS OF WEST CENTRAL NORTH DAKOTA... AT 645 PM MDT RADAR INDICATED INTENSE THUNDERSTORMS IN NORTH CENTRAL RICHLAND COUNTY OF EASTERN MONTANA ABOUT 20 MILES SOUTH OF CULBERTSON MONTANA. THESE THUNDERSTORMS WILL MOVE INTO NORTH DAKOTA WITHIN THE NEXT HALF HOUR. MOVEMENT OF THESE STORMS WAS EAST !AT 40 MILES AN HOUR. OTHER STRONG THUNDERSTORMS WERE LOCATED IN BILLING COUNTY NEAR THE CITY OF MEDORA NORTH DAKOTA. VERY HEAVY RAIN..FREQUENT LIGHTNING STRIKES..HAIL AND GUSTY WINDS CAN BE EXPECTED WITH THESE THUNDERSTORMS. NIELSEN
Special weather statement, Jun 20, 6:59 PM MDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 7 PM MDT FRI JUN 20 1986 ...SEVERE THUNDERSTORM WATCH UNTIL 11PM MDT FOR SOUTHWEST NORTH DAKOTA.. AT 655 PM MDT STRONG THUNDERSTORMS CONTINUED MOVING THROUGH WEST CENTRAL AND SOUTHWEST NORTH DAKOTA. THE STRONGEST THUNDERSTORM WAS LOCATED ON THE NORTH DAKOTA/SOUTH DAKOTA BORDER 10 MILES SOUTHWEST OF BOWMAN. THIS THUNDERSTORM IS CAPABLE OF PRODUCING HAIL AND STRONG WINDS. AT 757 PM MDT POLICE IN BOWMAN REPORTED WINDS GUSTING TO 40 MPH. OTHER STRONG THUNDERSTORMS WERE IN BILLINGS COUNTY IN THE VICINITY OF MEDORA. REPORTS FROM MEDORA INDICATED VERY HEAVY RAIN BUT NO HAIL IN THE TOWN. THE THUNDERSTORMS WILL BE IN THE M+EDORA AREA UNTIL ABOUT 715 PM MDT. THE THUNDERSTORMS IN SOUTHWEST NORTH DAKOTA WERE MOVING EAST AT 25 MPH. THE STRONGER THUNDERSTORMS MAY PRODUCE HAIL WITH STRONG WINDS. VAN ESS
Special weather statement, Jun 20, 7:46 PM MDT, 21 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 20, 7:22 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 38 min |
| Jun 20, 7:32 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie | 53 min |
| Jun 20, 8:08 PM MDT | Severe Thunderstorm Warning | BIS | Williams | 52 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1986Every severe thunderstorm warning in 1986
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.