Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 32, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 21, 1986, 3:29 PM CDT for Douglas County, Grant County, Minnesota. It was in force for 61 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 21, 1986, 3:29 PM CDT (20:29 UTC)
- Expired
- Jun 21, 1986, 4:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Douglas County, MN, Grant County, MN
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 21, 3:30 PM CDT | Tornado F0 | Douglas, MN | |
| Jun 21, 3:30 PM CDT | Thunderstorm Wind 0 | Douglas, MN |
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
Minneapolis, MN (KSTC), launched 12:00Z, 8.5 hours before the alert went out and 206 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
- 318 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 727 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 212031 SVRFAR MNC051-041-212130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FARGO ND 329 PM CDT SAT JUN 21 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST CENTRAL MINNESOTA...EASTERN GRANT...WESTERN DOUGLAS AND THE CITY OF ALEXANDRIA AT 325 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES WEST OF ALEXANDRIA MINNESOTA MOVING TO THE EAST AT 35 MILES AN HOUR. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND/OR HAIL 3/4 OF AN INCH OR LARGER...DEADLY LIGHTNING... AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING...SO YOU SHOULD BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY. IF THREATENING WEATHER APPROACHES...YOU SHOULD GO TO A PLACE OF SAFETY IMMEDIATELY. REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY AFTER THE STORM PASSES. NORDLAND
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 21, 12:45 PM CDT, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1234 PM CDT SAT JUN 21 1986 ...THUNDERSTORMS FIRE UP OVER SOUTHEAST NORTH DAKOTA... AT 1230 PM CDT SCATTERED SHOWERS AND THUNDERSTORMS..A FEW WITH VERY HEAVY RAIN..WERE OVER MUCH OF THE SOUTHEAST QUARTER OF NORTH DAKOTA AND A SMALL PART OF NORTHEAST SOUTH DAKOTA. THE THUNDERSTORMS WITH VERY HEAVY RAIN WERE NEAR VALLEY CITY AND HOPE ..50 MILES WEST AND 35 MILES NORTHWEST OF FARGO NORTH DAKOTA. THESE STORMS ARE CAPABLE OF PRODUCING HAIL..GUSTY WIND AND DANGEROUS LIGHTNING STRIKES AS WELL AS VERY HEAVY RAIN AS THEY MOVED NORTHEAST AT 35 MILES AN HOUR. OTHER SHOWERS AND THUNDERSTORMS WERE OVER AN AREA FROM ABERDEEN SOUTH DAKOTA NORTH TO JAMESTOWN NORTH DAKOTA AND NORTHEAST TO THE RED RIVER ABOUT 30 MILES NORTH OF FARGO NORTH DAKOTA. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR. PEOPLE IN SOUTHEAST NORTH DAKOTA PARTICIPATING IN OUTDOOR ACTIVITIES SHOULD BE ALERT AND STAY TUNED TO LOCAL RADIOS AND BE PREPARED TO SEEK SHELTER IN THE EVENT OF ADVERSE WEATHER CONDITIONS. BENNETT
Special weather statement, Jun 21, 1:39 PM CDT, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO, ND 138 PM CDT SAT JUN 21 1986 ...INTENSE THUNDERSTORMS OVER SOUTHEAST NORTH DAKOTA... AT 125 PM CDT AN ISOLATED INTENSE THUNDERSTORM WAS ABOUT 10 MILES NORTHWEST OF FARGO NORTH DAKOTA. THIS STORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...HAIL...GUSTY WIND AND DANGEROUS LIGHTNING STRIKES AS IT MOVED NORTHEAST AT 35 MILES AN HOUR. CURRENT TRACK WILL TAKE THE STORM OVER THE PERLEY..HENDRUM AREA OF WEST NORMAN COUNTY OF NORTH WEST MINNESOTA BY 2 PM. OTHER THUNDERSTORMS WITH HEAVY AND VERY HEAVY RAIN WERE IN A CLUSTER FROM 15 MILES WEST TO 15 MILES NORTH OF FARGO NORTH DAKOTA. THESE STORMS WERE ALSO MOVING NORTHEAST AT ABOUT 35 MILES AN HOUR. ELSEWHERE SHOWERS AND THUNDERSHOWERS EXTENDED FROM SOUTH OF ABERDEEN SOUTH DAKOTA NORTH TO JUST EAST OF JAMESTOWN NORTH DAKOTA AND THEN NORTHEAST TO 60 MILES NORTHEAST OF FARGO NORTH DAKOTA NEAR FOSSTON MINNESOTA. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR. PEOPLE PARTICIPATING IN OUTDOOR ACTIVITIES SHOULD STAY ALERT AND STAY TUNED TO LOCAL RADIO STATIONS AND LISTEN FOR WEATHER STATEMENTS AND POSSIBLE WARNINGS AS CONDITIONS ARE FAVORABLE FOR THE FORM-ATION OF SEVERE WEATHER IN SOUTHEAST NORTH DAKOTA AND WEST CENTRAL MINNESOTA. BENNETT
Special weather statement, Jun 21, 1:40 PM CDT, 1 hour 49 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO, ND 138 PM CDT SAT JUN 21 1986 ...INTENSE THUNDERSTORMS OVER SOUTHEAST NORTH DAKOTA... AT 125 PM CDT AN ISOLATED INTENSE THUNDERSTORM WAS ABOUT 10 MILES NORTHWEST OF FARGO NORTH DAKOTA. THIS STORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...HAIL...GUSTY WIND AND DANGEROUS LIGHTNING STRIKES AS IT MOVED NORTHEAST AT 35 MILES AN HOUR. CURRENT TRACK WILL TAKE THE STORM OVER THE PERLEY..HENDRUM AREA OF WEST NORMAN COUNTY OF NORTH WEST MINNESOTA BY 2 PM. OTHER THUNDERSTORMS WITH HEAVY AND VERY HEAVY RAIN WERE IN A CLUSTER FROM 15 MILES WEST TO 15 MILES NORTH OF FARGO NORTH DAKOTA. THESE STORMS WERE ALSO MOVING NORTHEAST AT ABOUT 35 MILES AN HOUR. ELSEWHERE SHOWERS AND THUNDERSHOWERS EXTENDED FROM SOUTH OF ABERDEEN SOUTH DAKOTA NORTH TO JUST EAST OF JAMESTOWN NORTH DAKOTA AND THEN NORTHEAST TO 60 MILES NORTHEAST OF FARGO NORTH DAKOTA NEAR FOSSTON MINNESOTA. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR. PEOPLE PARTICIPATING IN OUTDOOR ACTIVITIES SHOULD STAY ALERT AND STAY TUNED TO LOCAL RADIO STATIONS AND LISTEN FOR WEATHER STATEMENTS AND POSSIBLE WARNINGS AS CONDITIONS ARE FAVORABLE FOR THE .FORMATION OF SEVERE WEATHER IN SOUTHEAST NORTH DAKOTA AND WEST CENTRAL MINNESOTA. BENNETT
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 4:29 PM CDT | Severe Thunderstorm Warning | FGF | Koochiching | 31 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.