Alert archive / Wisconsin / Tornado Warnings in 1990
Tornado Warning 7, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Sep 9, 1990, 6:23 PM CDT for Pierce County, Wisconsin. It was in force for 37 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
- Sep 9, 1990, 6:23 PM CDT (23:23 UTC)
- Expired
- Sep 9, 1990, 7:00 PM CDT
- In force
- 37 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Pierce County, WI
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 |
|---|---|---|---|
| Sep 9, 6:30 PM CDT | Hail 2.75 | Pierce, WI |
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, 11.4 hours before the alert went out and 94 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
- 95 J/kg
- Mixed-layer CIN
- -590 J/kg
- Mixed-layer LCL
- 1481 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 292 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 KMSP 092324
TORMSP
WIC093-100000-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
623 PM CDT SUN SEP 9 1990
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 700 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN WEST CENTRAL WISCONSIN
...NORTHERN PIERCE
AT 520 PM RADAR SHOWED A POSSIBLE TORNADO 25 MILES SOUTHEAST OF
DOWNTOWN ST PAUL NEAR BELDENVILLE.
THE STORM WAS MOVING EAST AT 25 MILES AN HOUR.
CITIES IN THE PATH OF THIS STORM INCLUDE
BELDENVILLE...ELLSWORTH...MARTEL...EL PASO AND OLIVET.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
PHILLIPSThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 5:04 PM CDT | Severe Thunderstorm Warning | MPX | Pierce, Saint Croix | 56 min |
| Sep 9, 5:58 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pierce, Saint Croix | 62 min |
| Sep 9, 5:58 PM CDT | Severe Thunderstorm Warning | MPX | Pepin | 62 min |
| Sep 9, 6:53 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin, Pierce | 67 min |
| Sep 9, 6:53 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 67 min |
Nearby
Tornado Warnings in Wisconsin, 1990Every tornado warning in 1990Tornadoes 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.