Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 31, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 18, 2004, 2:42 AM CDT for Eau Claire County, Pepin County, Wisconsin. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2004, 2:42 AM CDT (07:42 UTC)
- Expired
- Apr 18, 2004, 3:30 AM CDT
- In force
- 48 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Eau Claire County, WI, Pepin County, WI
The radar
The La Crosse radar (KARX), 100 km from the middle of the area, began a volume at 07:43 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 18, 12:30 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 7.7 hours before the alert went out and 160 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2026 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 489 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
099
WUUS53 KMPX 180742
SVRMPX
WIC035-091-180830-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
242 AM CDT SUN APR 18 2004
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN
PEPIN COUNTY IN WEST CENTRAL WISCONSIN
* UNTIL 330 AM CDT
* AT 242 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
HAIL 30 MILES WEST OF FALL CREEK...OR ABOUT 5 MILES EAST OF
DURAND...MOVING EAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
AUGUSTA.
FALL CREEK.
THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM
WINDOWS.
LAT...LON 4468 9189 4455 9185 4461 9111 4483 9113
4472 9163 4468 9165
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 10:47 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 28 min |
| Apr 17, 11:20 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 55 min |
| Apr 18, 1:23 AM CDT | Severe Thunderstorm Warning | MPX | Pierce | 67 min |
| Apr 18, 1:34 AM CDT | Severe Thunderstorm Warning | MPX | Barron | 41 min |
| Apr 18, 1:52 AM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 38 min |
| Apr 18, 1:57 AM CDT | Severe Thunderstorm Warning | MPX | Pepin | 48 min |
| Apr 18, 1:59 AM CDT | Severe Thunderstorm Warning | MPX | Rusk | 46 min |
| Apr 18, 2:09 AM CDT | Severe Thunderstorm Warning | MPX | Dunn | 51 min |
| Apr 18, 2:16 AM CDT | Severe Thunderstorm Warning | MPX | Barron | 29 min |
| Apr 18, 2:24 AM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 36 min |
| Apr 18, 7:24 AM CDT | Severe Thunderstorm Warning | MPX | Polk | 36 min |
| Apr 18, 4:42 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 48 min |
| Apr 18, 6:16 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 44 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.