Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 82, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 8, 1990, 4:28 AM CDT for Sibley County, Minnesota. It was in force for 47 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 8, 1990, 4:28 AM CDT (09:28 UTC)
- Expired
- Jul 8, 1990, 5:15 AM CDT
- In force
- 47 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Sibley 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 |
|---|---|---|---|
| Jul 8, 4:45 AM CDT | Thunderstorm Wind 61 | Sibley, 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 00:00Z, 9.5 hours before the alert went out and 58 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
- 1386 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 726 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 080928
SVRMSP
MNC143-081015-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
428 AM CDT SUN JUL 8 1990
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN CENTRAL MINNESOTA
...SIBLEY
AT 425 AM CDT..WEATHER RADAR WAS INDICATING A SEVERE THUNDERSTORM
ABOUT 8 MILES WEST OF GAYLORD NEAR THE TOWN OF GIBBON. THIS SEVERE
ACTIVITY WAS ABOUT 55 MILES SOUTHWEST OF MINNEAPOLIS.
THIS SEVERE THUNDERSTORM WAS MOVING EAST NORTHEAST AT 40 MPH AND WILL
BE AFFECTING AREAS NEAR WINTHROP..GAYLORD..NEW AUBURN AND GREEN ISLE.
STRONG DAMAGING WINDS AND LARGE HAIL ARE LIKELY WITH THIS STORM.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OMF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 1:07 AM CDT | Severe Thunderstorm Warning | MPX | Swift | 53 min |
| Jul 8, 1:07 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 23 min |
| Jul 8, 2:09 AM CDT | Severe Thunderstorm Warning | MPX | Morrison | 51 min |
| Jul 8, 4:49 AM CDT | Severe Thunderstorm Warning | MPX | Carver | 41 min |
| Jul 8, 5:00 AM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Scott | 60 min |
| Jul 8, 5:14 AM CDT | Severe Thunderstorm Warning | MPX | Ramsey, Washington | 46 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.