Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 21, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 3, 2012, 8:21 PM CDT for Buffalo County, Trempealeau County, Wisconsin. It was in force for 39 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
- May 3, 2012, 8:21 PM CDT (01:21 UTC)
- Expired
- May 3, 2012, 9:00 PM CDT
- In force
- 39 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Buffalo County, WI, Trempealeau County, WI
The radar
The La Crosse radar (KARX), 83 km from the middle of the area, began a volume at 01:25 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 172 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
- 339 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1255 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
800
WUUS53 KARX 040121
SVRARX
WIC011-121-040200-
/O.NEW.KARX.SV.W.0021.120504T0121Z-120504T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
821 PM CDT THU MAY 3 2012
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN BUFFALO COUNTY IN WEST CENTRAL WISCONSIN...
NORTHWESTERN TREMPEALEAU COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 900 PM CDT
* AT 815 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM LOCATED NEAR MONDOVI...MOVING SOUTHEAST AT
20 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
MONDOVI AIRFIELD AROUND 830 PM...
ELEVA AROUND 835 PM...
STRUM AROUND 845 PM...
THE BORST VALLEY AREA AROUND 850 PM...
CHIMNEY ROCK AROUND 855 PM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4452 9126 4440 9153 4460 9168 4460 9167
4460 9141
TIME...MOT...LOC 0121Z 315DEG 19KT 4461 9158
WIND...HAIL 60MPH 1.00IN
$$
HALBACH2 follow-up statements
611
WWUS53 KARX 040139
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
839 PM CDT THU MAY 3 2012
WIC011-121-040200-
/O.CON.KARX.SV.W.0021.000000T0000Z-120504T0200Z/
BUFFALO WI-TREMPEALEAU WI-
839 PM CDT THU MAY 3 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
TREMPEALEAU AND NORTHEASTERN BUFFALO COUNTIES UNTIL 900 PM CDT...
AT 834 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR ELEVA...OR 9 MILES EAST OF
MONDOVI...MOVING SOUTHEAST AT 20 MPH. THIS STORM CAN PRODUCE QUARTER
SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
STRUM AROUND 850 PM...
CHIMNEY ROCK AND THE BORST VALLEY AREA AROUND 900 PM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4452 9126 4440 9153 4460 9168 4460 9167
4460 9141
TIME...MOT...LOC 0139Z 318DEG 16KT 4457 9148
WIND...HAIL 60MPH 1.00IN
$$
HALBACH649
WWUS53 KARX 040159
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
859 PM CDT THU MAY 3 2012
WIC011-121-040209-
/O.EXP.KARX.SV.W.0021.000000T0000Z-120504T0200Z/
BUFFALO WI-TREMPEALEAU WI-
859 PM CDT THU MAY 3 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TREMPEALEAU AND
NORTHEASTERN BUFFALO COUNTIES WILL EXPIRE AT 900 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS. HOWEVER...THE STORM REMAINS STRONG AND COULD PRODUCE SMALL
HAIL AND GUSTY WINDS...IN ADDITION TO LIGHTNING AND HEAVY RAIN.
LAT...LON 4452 9126 4440 9153 4460 9168 4460 9167
4460 9141
TIME...MOT...LOC 0159Z 318DEG 16KT 4450 9140
$$
HALBACHThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 9:10 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 38 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2012Every severe thunderstorm warning in 2012
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.