Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 21, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 4, 1986, 1:33 AM CDT for Aitkin County, Cass County, Itasca County, Minnesota. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Jul 4, 1986, 1:33 AM CDT (06:33 UTC)
- Expired
- Jul 4, 1986, 2:30 AM CDT
- In force
- 57 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
Counties Aitkin County, MN, Cass County, MN, Itasca 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, 6.6 hours before the alert went out and 176 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1754 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDLH 040633 SVRDLH MNC061-021-001-040730- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DULUTH MN 133 AM CDT FRI JUL 4 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTH CENTRAL MINNESOTA...SOUTHERN ITASCA...EASTERN CASS AND NORTHERN AITKIN AT 115 AM CDT...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM PEQUOT LAKES NORTH TO CASS LAKE MOVING EAST AT 50 MILES AN HOUR. DAMAGING WINDS AND HAIL WERE REPORTED BY THE CASS COUNTY SHERIFF AT WALKER MINNESOTA ON LEECH LAKE. THE CITIES OF REMER..GRAND RAPIDS..AND HILL CITY ARE INCLUDED. REMEMBER..SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE HAIL AND FREQUENT LIGHTNING STRIKES. ALSO SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT..AND BE PREPARED TO MOVE TO A PLACE ( OF SAFETY IF ONE IS SPOTTED. CHRISTENSON
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 3, 10:00 PM CDT, 3 hours 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN 1000 PM CDT THU JUL 3 1986 AT 1000 PM CDT...STRONG THUNDERSTORMS ARE INDICATED BY RADAR IN NORTHWESTERN KOOCHICHING COUNTY..ABOUT 35 MILES NORTHWEST OF INTERNATIONAL FALLS IN NORTHERN MINNESOTA. THESE THUNDERSTORMS ARE A PART OF A LARGE AREA EXTENDING FROM KOOCHICHING COUNTY SOUTHWESTWARD TO NEAR JAMESTOWN NORTH DAKOTA. THESE THUNDERSTORMS MAY CONTAIN SMALL HAIL...LOCALLY HEAVY RAINS AND BRIEF GUSTY SURFACE WINDS AS THEY MOVE TOWARD THE EAST AT ABOUT 35 MILES AN HOUR. PERSONS IN KOOCHICHING... BELTRAMI AND CLEARWATER COUNTIES OF NORTHERN MINNESOTA SHOULD BE ALERT TO THE APPROACH OF THESE THUNDERSTORMS FROM NOW UNTIL 1100 PM CDT. JOSEPHS
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 1:59 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Itasca | 46 min |
| Jul 4, 1:59 AM CDT | Severe Thunderstorm Warning | DLH | Crow Wing | 46 min |
| Jul 4, 2:27 AM CDT | Severe Thunderstorm Warning | DLH | Carlton, Saint Louis | 78 min |
| Jul 4, 3:02 AM CDT | Severe Thunderstorm Warning | DLH | Lake | 58 min |
| Jul 4, 7:22 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Crow Wing | 38 min |
| Jul 4, 8:20 AM CDT | Severe Thunderstorm Warning | DLH | Pine | 40 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.