Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 39, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Sep 5, 1990, 8:00 PM CDT for Pine County, Minnesota. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Sep 5, 1990, 8:00 PM CDT (01:00 UTC)
- Expired
- Sep 5, 1990, 9:00 PM CDT
- In force
- 60 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
County Pine 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
Minneapolis, MN (KSTC), launched 00:00Z, 1.0 hours before the alert went out and 156 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
- 3941 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 933 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 4.6
- Supercell composite
- 25.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDLH 060101
SVRDLH
MNC115-060200-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DULUTH MN
800 PM CDT WED SEP 5 1990
THE NATIONAL WEATHER SERVICE IN DULUTH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NORTHEAST MINNESOTA
...PINE
RADAR INDICATES A SEVERE THUNDERSTORM A LITTLE WEST OF SANDSTONE
MOVING TO THE SOUTHEAST AT 40 TO 45 MPH. CITIES IN THE PATH OF THIS
STORM INCLUDE SANDSTONE...WILLOW RIVER AND HINKLEY.
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.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, Sep 5, 5:28 PM CDT, 2 hours 32 minutes before
MNZ003-004-008-009-052330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 528 PM CDT WED SEP 5 1990 AT 525 PM CDT DULUTH RADAR DETECTED SOME STRONG THUNDERSTORMS OVER SOUTHEAST ITASCA COUNTY AND NORTHERN AITKIN COUNTY. THESE THUNDERSTORMS EXTENDED FROM NEAR SWAN RIVER IN SOUTHEAST ITASCA COUNTY TO THE SHOVEL LAKE AREA IN NORTHWEST AITKIN COUNTY. THESE THUNDERSTORMS HAVE THE POTENTIAL TO CAUSE STRONG GUSTY WINDS... HAIL...FREQUENT LIGHTNING STRIKES AND HEAVY DOWNPOURS. PERSONS IN SOUTHEAST ITASCA COUNTY...NORTHERN AITKIN COUNTY AND SOUTHWEST ST LOUIS COUNTY AREA URGED TO SEEK SAFE SHELTER SHOULD THEY SEE A THUNDERSTORM APPROACHING. MOVEMENT WAS TO THE EAST AT ABOUT 30 MaPH.
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 7:10 PM CDT | Severe Thunderstorm Warning | DLH | Pine | 65 min |
| Sep 6, 12:44 AM CDT | Flash Flood Warning | DLH | Carlton | 2 hr |
| Sep 6, 2:36 AM CDT | Flash Flood Warning | DLH | Carlton | 3 hr |
| Sep 6, 6:00 AM CDT | Flash Flood Warning | DLH | Carlton | 2 hr |
| Sep 6, 6:00 AM CDT | Flash Flood Warning | DLH | Saint Louis | 2 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1990Every severe thunderstorm warning in 1990
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.