Alert archive / North Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 86, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 27, 1986, 11:03 PM CDT for Bottineau County, North Dakota. It was in force for 27 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 27, 1986, 11:03 PM CDT (04:03 UTC)
- Expired
- Jul 27, 1986, 11:30 PM CDT
- In force
- 27 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Bottineau 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 27, 11:25 PM CDT | Hail 1.75 | Bottineau, 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, 4.1 hours before the alert went out and 225 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
- 821 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1441 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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, Jul 27, 6:05 PM CDT, 4 hours 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 605 PM CDT SUN JUL 27 1986 ...TORNADO WATCH IN EFFECT FOR MOST OF WESTERN NORTH DAKOTA UNTIL 9 PM CDT... AT 600 PM CDT THUNDERSTORMS CONTINUED TO DEVELOP IN EASTERN MONTANA AND WESTERN NORTH DAKOTA. THE MOST INTENSE THUNDERSTORM WAS LOCATED IN EAST CENTRAL BURKE COUNTY ABOUT 20 MILES SOUTHEAST OF COLUMBUS NORTH DAKOTA..OTHER STRONG THUNDERSTORMS WERE LOCATED IN NORTHERN GOLDEN VALLEY COUNTY AND SOUTHERN MCKENZIE COUNTY JUST WEST OF GRASSY BUTTE NORTH DAKOTA. MOVEMENT OF THESE THUNDERSTORMS WAS EAST AT 20 TO 25 MILES AN HOUR. THUNDERSTORMS ARE EXPECTED TO CONTINUE DEVELOPING ACROSS THE WESTERN PART OF NORTH DAKOTA TONIGHT AND CONDITIONS ARE FAVORABLE FOR SOME TO BECOME SEVERE. NIELSEN
Special weather statement, Jul 27, 7:25 PM CDT, 3 hours 38 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 725 PM CDT SUN JUL 27 1986 ...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN NORTH DAKOTA UNTIL 9 PM CDT OR 8 PM MDT... AT 720 PM CDT ISOLATED THUNDERSTORMS CONTINUED OVER PORTIONS OF CENTRAL AND WESTERN NORTH DAKOTA. THE STRONGEST THUNDERSTORM WAS IN BURKE COUNTY IN NORTHWESTERN NORTH DAKOTA. OTHER THUNDERSTORMS WERE IN THE HARVEY AREA IN CENTRAL NORTH DAKOTA AND IN WESTERN GRANT COUNTY..SOUTHWEST OF BISMARCK. THESE THUNDERSTORMS WERE MOVING TO THE EAST AT 20 MILES AN HOUR AND COULD BE PRODUCING HEAVY RAIN AS WELL AS DANGEROUS LIGHTNING. PERSONS IN WESTERN AND CENTRAL NORTH DAKOTA SHOULD KEEP ABREAST OF THE LATEST WEATHER DEVELOPMENTS. CONDITIONS REMAIN FAVORABLE FOR THUNDER- STORM DEVELOPMENT IN NORTH DAKOTA TONIGHT. KAS
Special weather statement, Jul 27, 8:39 PM CDT, 2 hours 24 minutes before
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</html>Special weather statement, Jul 27, 8:56 PM CDT, 2 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 855 PM CDT SUN JUL 27 1986 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN NORTH DAKOTA UNTIL 2 AM CDT... ISOLATED THUNDERSTORMS CONTINUE TO PLAGUE NORTH DAKOTA THIS EVENING. AT 850 PM CDT INTENSE THUNDERSTORMS WERE LOCATED IN WELLS COUNTY IN CENTRAL NORTH DAKOTA..LAGAN AND MCINTOSH COUNTIES IN SOUTHCENTRAL NORTH DAKOTA.. AND IN WESTERN BOTTINEAU COUNTY IN NORTHCENTRAL NORTH DAKOTA. THESE STORMS WERE MOVING TO THE EAST AT 20 MILES AN HOUR AND PRODUCING HEAVY RAIN. A NORTH TO SOUTH LINE OF THUNDERSTORMS IN EASTERN MONTANA WILL BE MOVING INTO NORTH DAKOTA BEFORE 10 PM CDT OR 9 PM MDT. CONDITIONS <ACROSS NORTH DAKOTA ARE FAVORABLE FOR SEVERE WEATHER. PERSONS SHOULD KEEP ABREAST OF THE LATEST WEATHER DEVELOPMENTS AND BE PREPARED FOR SEVERE WEATHER. KAS
Special weather statement, Jul 27, 9:02 PM CDT, 2 hours 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 900 PM CDT SUN JUL 27 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MOST OF WESTERN NORTH DAKOTA UNTIL 2 AM CDT..REPLACING THE TORNADO WATCH... AT 900 PM CDT AN AREA OF OF INTENSE THUNDERSTORMS WAS LOCATED ALONG THE NORTH DAKOTA-MONTANA BORDER FROM ABOUT 25 MILES NORTHWEST OF WILLISTON TO JUST SOUTH OF SIDNEY MONTANA. REPORTS OF WIND GUSTS OF 40 TO 50 MILES AN HOUR WITH VERY HEAVY RAIN WERE REPORTED IN THE SIDNEY AREA. MOVEMENT OF THESE STORMS WAS NORTHEAST AT 25 TO 30 MILES AN HOUR AND SHOULD MOVE INTO THE WILLISTON AREA WITHIN THE NEXT HALF HOUR. GUSTY WINDS..VERY HEAVY RAIN..DANGEROUS LIGHTNING AND SMALL HAIL CAN BEB EXPECTED WITH THESE STORMS. NIELSEN
Special weather statement, Jul 27, 10:50 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 1050 PM CDT SUN JUL 27 1986 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN NORTH DAKOTA UNTIL 2 AM CDT... A LINE OF VERY INTENSE THUNDERSTORMS CONTINUED TO MOVE EAST IN WESTERN NORTH DAKOTA. AT 1045 PM CDT THE LINE EXTENDED FROM NORTH OF WILLISTON NEAR ESTEVAN SASKATCHEWAN SOUTH TO DICKINSON THEN SOUTHWEST TO THE SOUTHWEST CORNER OF THE STATE. THIS LINE WAS MOVING TO THE EAST AT 40 TO 45 MILES AN HOUR. WIND GUSTS FROM THESE THUNDERSTORMS MAY EXCEED 50 MILES AND HOUR. THESE THUNDERSTORMS ALSO CONTAIN HEAVY RAIN AND POSSIBLY SOME HAIL. REPORTS OF CONTINEOUS LIGHTNING HAVE BEEN RECEIVED FROM HAM RADIO OPERATERS IN THE DICKINSON AREA. REMEMBER..LIGHTNING CAN BE DEADLY. PERSONS ACROSS WESTERN NORTH DAKOTA SHOULD BE PREPARED FOR THE STRONG WINDS..RAIN..AND THE POSSIBILITY OF SEVERE WEATHER. IF SEVERE WEATHER APPROACHES..BE PREPARED TO TAKE SHELTER. KAS
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 7:03 PM CDT | Severe Thunderstorm Warning | BIS | Burke | 27 min |
| Jul 27, 7:40 PM CDT | Tornado Warning | BIS | Wells | 35 min |
| Jul 27, 9:23 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 37 min |
| Jul 27, 10:09 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, McKenzie | 66 min |
| Jul 27, 10:26 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Divide | 64 min |
| Jul 28, 12:09 AM CDT | Tornado Warning | BIS | Ward | 21 min |
| Jul 28, 12:28 AM CDT | Tornado Warning | BIS | Ward | 32 min |
| Jul 28, 6:11 PM CDT | Severe Thunderstorm Warning | BIS | Emmons | 49 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.