Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 127, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 9, 1990, 5:04 PM CDT for Pierce County, Saint Croix County, Wisconsin; Ramsey County, Washington County, Minnesota. It was in force for 56 min. 2 reports 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, 5:04 PM CDT (22:04 UTC)
- Expired
- Sep 9, 1990, 6:00 PM CDT
- In force
- 56 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Ramsey County, MN, Washington County, MN, Pierce County, WI, Saint Croix 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, 5:16 PM CDT | Hail 1 | Washington, MN | |
| Sep 9, 6:10 PM CDT | Hail 1.75 | 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, 10.1 hours before the alert went out and 71 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 092205
SVRMSP
MNC123-163-WIC093-109-092300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
504 PM CDT SUN SEP 9 1990
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN EAST CENTRAL MINNESOTA
...SOUTHERN RAMSEY...SOUTHERN AND CENTRAL WASHINGTON
IN WEST CENTRAL WISCONSIN
...PIERCE...ST CROIX
AT 5 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST EAST OF
DOWNTOWN ST PAUL EXTENDING TO NEAR HUDSON WISCONSIN.
THIS STORM WILL LIKELY PRODUCE LARGE HAIL AND POSSIBLY DAMAGING WINDS.
MOVEMENT WAS EAST AT 30 MILES AN HOUR.
TOWNS IN THE PATH OF THIS STORM ARE THE SUBURBS EAST OF ST
PAUL...HUDSON WISCONSIN AND RIVER FALLS.
WHEN THUNDERSTORMS ARE OCCURRING..MOVE INSIDE A STRONG BUILDING
DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL
APPLIANCES OUNLESS IN AN EMERGENCY. REMEMBER SEVERE THUNDERSTORMS
CAN AND OCCASIONALLY DO PRODUCE TORNADOS WITH LITTLE OR NO WARNING.The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 6:23 PM CDT | Tornado Warning | MPX | Pierce | 37 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 |
| Sep 9, 4:37 AM CDT | Severe Thunderstorm Warning | MPX | Mille Lacs, Morrison | 68 min |
| Sep 9, 5:06 AM CDT | Severe Thunderstorm Warning | MPX | Mille Lacs | 54 min |
| Sep 9, 5:15 AM CDT | Severe Thunderstorm Warning | MPX | Benton | 45 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1990Severe 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.