Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 98, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 9, 2004, 6:34 PM CDT for Barron County, Dunn County, Pepin County, Wisconsin. It was in force for 41 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 9, 2004, 6:34 PM CDT (23:34 UTC)
- Expired
- May 9, 2004, 7:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Barron County, WI, Dunn County, WI, Pepin County, WI
The radar
The Minneapolis radar (KMPX), 129 km from the middle of the area, began a volume at 23:33 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 9, 7:00 PM CDT | TSTM WND DMG | Menomonie, WI | TREES WERE DOWNED IN MENOMO NIE AND OTTER CREEK TOWNSHIP. THE TIME WAS ESTIMATED. |
| May 9, 7:00 PM CDT | HAIL 0.75 | 4 Se Dallas, WI | |
| May 9, 7:07 PM CDT | TORNADO | 4 Se Dallas, WI | POSSIBLE TORNADO PENDING INVESTIGATION IN SIOUX CREEK TOWNSHIP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 9, 3:55 PM CDT | Tornado Watch | SPC | 5 hr |
| May 9, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.6 hours before the alert went out and 132 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
- 8 J/kg
- Mixed-layer CIN
- -483 J/kg
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS53 KMPX 092334
SVRMPX
WIC005-033-091-100015-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
634 PM CDT SUN MAY 9 2004
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BARRON COUNTY IN NORTHWEST WISCONSIN
DUNN COUNTY IN WEST CENTRAL WISCONSIN
THIS INCLUDES THE CITY OF MENOMONIE
PEPIN COUNTY IN WEST CENTRAL WISCONSIN
THIS INCLUDES THE CITY OF DURAND
* UNTIL 715 PM CDT
* AT 629 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE FROM 14 MILES WEST OF
RICE LAKE TO 10 MILES NORTHEAST OF ELLSWORTH...AND MOVING EAST
AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
DURAND.
MENOMONIE.
LAT...LON 4530 9212 4502 9212 4458 9212 4461 9168
4474 9168 4527 9168
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 5:56 PM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 64 min |
| May 9, 6:23 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 67 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2004Every severe thunderstorm warning in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.