Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 30, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 18, 1986, 9:15 PM CDT for Koochiching County, Minnesota. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Jun 18, 1986, 9:15 PM CDT (02:15 UTC)
- Expired
- Jun 18, 1986, 10:15 PM CDT
- In force
- 60 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Koochiching County, MN
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
International Fa, MN (KINL), launched 00:00Z, 2.3 hours before the alert went out and 51 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
- 1049 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1441 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.1
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 18, 3:29 PM CDT, 5 hours 46 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 330 PM CDT WED JUN 18 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PART OF EXTREME EASTERN NORTH DAKOTA...NORTHERN AND CENTRAL MINNESOTA UNTIL 800 PM... AT 325 PM CDT...SCATTERED SHOWERS AND THUNDERSHOWERS CONTINUED OVER PARTS OF NORTHWEST AND NORTH CENTRAL MINNESOTA. THE SHOWERS AND THUNDERSHOWERS WERE IN A 50 MILE WIDE BAND FROM THE LOWER RED LAKE IN NORTH CENTRAL MINNESOTA SOUTH TO NEAR LEECH LAKE AND ITASCA STATE PARK. MOVEMENT WAS EAST AT 25 MILES AN HOUR. ALTHOUGH NO SEVERE WEATHER IS OCCURRING AT THIS TIME CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. PERSONS IN A9ND NEAR THE WATCH AREA SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND TUNE IN TO RADIO AND TV STATION AS WELL AS NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND WARNINGS. VOELKER
Special weather statement, Jun 18, 4:36 PM CDT, 4 hours 39 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 428 PM CDT WED JUN 18 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PART OF EXTREME EASTERN NORTH DAKOTA...NORTHERN AND CENTRAL MINNESOTA UNTIL 800 PM... AT 425 PM CDT...SCATTERED SHOWERS AND THUNDERSHOWERS CONTINUED OVER PARTS OF NORTH CENTRAL MINNESOTA. THE SHOWERS AND THUNDERSHOWERS WERE OVER AN AREA ABOUT 80 MILES WIDE THAT REACHED FROM THE WEST EDGE OF THE LOWER RED LAKE..NORTH OF BEMIDJI TO 50 MILES NORTHEAST OF BRAINERD. MOVEMENT WAS EAST AT 25 MILES AN HOUR. AS OF 425 PM CDT NO SEVERE WEATHER HAD BEEN REPORTED OVER THE REGION.. HOWEVER THE CONDITIONS REMAIN FAVORABLE FOR THE FORMATION OF SEVERE WEATHER. BENNETT
Special weather statement, Jun 18, 5:29 PM CDT, 3 hours 46 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 526 PM CDT WED JUN 18 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PART OF EXTREME EASTERN NORTH DAKOTA...NORTHERN AND CENTRAL MINNESOTA UNTIL 800 PM... AT 525 PM CDT ISOLATED LIGHT RAIN SHOWERS REMAINED OVER A SMALL PART OF NORTH CENTRAL MINNESOTA. THE SHOWERS WERE MAINLY OVER THE LOWER RED LAKE AND BETWEEN BRAINERD AND GRAND RAPIDS. MOVEMENT WAS EAST AT 25 MILES AN HOUR. AS OF 525 PM CDT NO SEVERE WEATHER HAD BEEN REPORTED OVER THE REGION.. HOWEVER THE CONDITIONS REMAIN FAVORABLE FOR THE FORMATION OF SEVERE WEATHER. BENNETT
Special weather statement, Jun 18, 8:40 PM CDT, 35 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 832 PM CDT WED JUN 18 1986 ...THUNDERSTORMS FIRE UP OVER NORTHWEST AND NORTH CENTRAL MINNESOTA... AT 825 PM CDT ISOLATED THUNDERSTORMS WITH HEAVY RAIN WERE OVER EAST MARSHALL COUNTY OF NORTHWEST MINNESOTA..ABOUT 35 MILES NORTHEAST OF THIEF RIVER FALLS. THESE STORMS WERE MOVING EAST AT ABOUT 25 MILES AN HOUR AND SHOULD INTO BELTRAMI COUNTY BY 900 PM. THESE STORM COULD PRODUCE VERY HEAVY RAIN...HAIL AND GUSTY WIND AS WELL AS DANGEROUS LIGHTNING STRIKES. PEOPLE IN EAST MARSHALL AND NORTH BELTRAMI COUNTIES OF MINNESOTA SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER AND BE PREPARED TO SEEK SHELTER. OTHElR SHOWERS AND THUNDERSHOWERS WERE IN A BAND ABOUT 45 MILES WIDE THAT EXTENDED FROM 25 MILES WEST OF THIEF RIVER FALLS EAST INTO KOOCHICHING COUNTY OF NORTH CENTRAL MINNESOTA. MOVEMENT WAS EAST AT ABOUT 25 MILES AN HOUR. BENNETT
Special weather statement, Jun 18, 8:44 PM CDT, 31 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY..CORRECT SECOND PARA NATIONAL WEATHER SERVICE FARGO ND 832 PM CDT WED JUN 18 1986 ...THUNDERSTORMS FIRE UP OVER NORTHWEST AND NORTH CENTRAL MINNESOTA... AT 825 PM CDT ISOLATED THUNDERSTORMS WITH HEAVY RAIN WERE OVER EAST MARSHALL COUNTY OF NORTHWEST MINNESOTA..ABOUT 35 MILES NORTHEAST OF THIEF RIVER FALLS. THESE STORMS WERE MOVING EAST AT ABOUT 25 MILES AN HOUR AND SHOULD MOVE INTO BELTRAMI COUNTY BY 900 PM. THESE STORM COULD PRODUCE VERY HEAVY RAIN...HAIL AND GUSTY WIND AS WELL AS DANGEROUS LIGHTNING STRIKES. PEOPLE IN EAST MARSHALL AND NORTH BELTRAMI COUNTIES OF MINNESOTA SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER AND BE PREPARED TO SEEK SHELTER. OTHER SHOWERS AND THUNDERSHOWERS WERE IN A BAND ABOUT 45 MILES WIDE THAT EXTENDED FROM 25 MILES WEST OF THIEF RIVER FALLS EAST INTO KOOCHICHING COUNTY OF NORTH CENTRAL MINNESOTA. MOVEMENT WAS EAST AT ABOUT 25 MILES AN HOUpR. BENNETT
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 8:15 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 45 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; the sounding from the Mesonet's radiosonde archive.