Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 17, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 3, 2012, 7:11 AM CDT for La Crosse County, Trempealeau County, Vernon County, Wisconsin. It was in force for 49 min. 6 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 3, 2012, 7:11 AM CDT (12:11 UTC)
- Expired
- May 3, 2012, 8:00 AM CDT
- In force
- 49 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties La Crosse County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 4 km from the middle of the area, began a volume at 12:11 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 3, 7:30 AM CDT | TSTM WND DMG | 2 Se La Crosse, WI | SOME DOWNED POWER LINES IN TOWN OF SHELBY |
| May 3, 7:30 AM CDT | TSTM WND GST 33 | La Crosse, WI | |
| May 3, 7:39 AM CDT | TSTM WND GST 38 | Trempealeau, WI | STRONG WIND GUSTS LASTED FOR APPROX 10 MINUTES |
| May 3, 7:40 AM CDT | TSTM WND GST 60 | Holmen, WI | |
| May 3, 7:41 AM CDT | TSTM WND DMG | 1 N Holmen, WI | NWS EMPLOYEE REPORTS A COUPLE OF TREES AND SOME 6 INCH DIAMETER BRANCHES DOWN |
| May 3, 7:45 AM CDT | TSTM WND DMG | Galesville, WI | PICNIC TABLE FLIPPED ALONG WITH PEA SIZE HAIL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 0.2 hours before the alert went out and 219 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
- 1755 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 521 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
974
WUUS53 KARX 031211
SVRARX
WIC063-121-123-031300-
/O.NEW.KARX.SV.W.0017.120503T1211Z-120503T1300Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
711 AM CDT THU MAY 3 2012
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN VERNON COUNTY IN SOUTHWEST WISCONSIN...
LA CROSSE COUNTY IN WEST CENTRAL WISCONSIN...
SOUTHERN TREMPEALEAU COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 800 AM CDT
* AT 706 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS ROUGHLY ALONG A LINE EXTENDING FROM RUSHFORD
TO HOUSTON TO NEW ALBIN...MOVING NORTHEAST AT 50 MPH. THESE STORMS
CAN PRODUCE PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORMS WILL BE NEAR...
STODDARD AROUND 720 AM...
LA CROSSE AND TREMPEALEAU AROUND 725 AM...
ONALASKA AND HOLMEN AROUND 730 AM...
WEST SALEM AND GALESVILLE AROUND 735 AM...
BANGOR AROUND 740 AM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
SMALL HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
SEVERE THUNDERSTORMS POSE A SIGNIFICANT DANGER TO BOATERS. IF ON THE
AREA RIVERS OR LAKES...IMMEDIATELY MOVE TO SHORE AND FIND SHELTER.
&&
LAT...LON 4349 9121 4359 9123 4366 9127 4379 9124
4383 9127 4401 9145 4403 9156 4425 9147
4407 9115 4407 9091 4373 9091
TIME...MOT...LOC 1210Z 228DEG 41KT 4387 9163 4375 9146
4356 9128
WIND...HAIL 60MPH 0.75IN
$$
SHEA3 follow-up statements
218
WWUS53 KARX 031228
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
728 AM CDT THU MAY 3 2012
WIC063-121-123-031300-
/O.CON.KARX.SV.W.0017.000000T0000Z-120503T1300Z/
LA CROSSE WI-VERNON WI-TREMPEALEAU WI-
728 AM CDT THU MAY 3 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
TREMPEALEAU...NORTHWESTERN VERNON AND LA CROSSE COUNTIES UNTIL 800 AM
CDT...
AT 725 AM...SMALL HAIL HAS BEEN REPORTED IN LA CROSSE ALONG WITH
HEAVY RAIN. GUSTY WINDS OF 50 TO 60 MPH ARE ALSO POSSIBLE. MOVE
INSIDE UNTIL THESE STORMS PASS.
* THE SEVERE THUNDERSTORMS WILL BE NEAR...
WEST SALEM AND BANGOR AROUND 735 AM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND SMALL HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS. KEEP SCHOOL CHILDREN INSIDE.
DO NOT SEND THEM TO BUS STOPS THIS MORNING BECAUSE OF STORMS.
&&
LAT...LON 4349 9121 4359 9123 4366 9127 4379 9124
4383 9127 4401 9145 4403 9156 4425 9147
4407 9115 4407 9091 4373 9091
TIME...MOT...LOC 1226Z 228DEG 41KT 4399 9144 4388 9124
4381 9109
WIND...HAIL 60MPH 0.75IN
$$
SHEA590
WWUS53 KARX 031242
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
742 AM CDT THU MAY 3 2012
WIC123-031251-
/O.CAN.KARX.SV.W.0017.000000T0000Z-120503T1300Z/
VERNON WI-
742 AM CDT THU MAY 3 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN VERNON COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.
LAT...LON 4373 9092 4401 9145 4403 9156 4425 9147
4407 9115 4407 9091
TIME...MOT...LOC 1241Z 228DEG 41KT 4410 9126 4399 9106
4392 9091
$$
WIC063-121-031300-
/O.CON.KARX.SV.W.0017.000000T0000Z-120503T1300Z/
LA CROSSE WI-TREMPEALEAU WI-
742 AM CDT THU MAY 3 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
TREMPEALEAU AND LA CROSSE COUNTIES UNTIL 800 AM CDT...
AT 739 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM GALESVILLE TO
WEST SALEM TO BANGOR...MOVING NORTHEAST AT 45 MPH. THESE STORMS CAN
PRODUCE DAMAGING WINDS OF 50 TO 60 MPH.
THESE STORMS HAVE BEEN WEAKENING AS THEY MOVE NORTHEAST. NO
ADDITIONAL WARNINGS ARE EXPECTED WITH THIS LINE OF STORMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.
TORRENTIAL RAINFALL FROM THESE STORMS MAY ALSO CAUSE THE PONDING OF
WATER ON ROADWAYS AND LOCALIZED FLOODING.
&&
LAT...LON 4373 9092 4401 9145 4403 9156 4425 9147
4407 9115 4407 9091
TIME...MOT...LOC 1241Z 228DEG 41KT 4410 9126 4399 9106
4392 9091
WIND...HAIL 60MPH <.50IN
$$
SHEA080
WWUS53 KARX 031256
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
756 AM CDT THU MAY 3 2012
WIC063-121-031305-
/O.EXP.KARX.SV.W.0017.000000T0000Z-120503T1300Z/
LA CROSSE WI-TREMPEALEAU WI-
756 AM CDT THU MAY 3 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TREMPEALEAU AND LA
CROSSE COUNTIES WILL EXPIRE AT 800 AM CDT...
THE LINE OF STORMS WHICH PROMPTED THESE WARNINGS HAS WEAKENED AND
MOVED OUT OF THE WARNED AREA. HEAVY RAIN WILL BE ENDING IN MOST OF
LA CROSSE COUNTY BY 815 AM.
THERE HAS BEEN REPORTS OF POWER LINES AND TREES DOWN ALONG WITH SOME
STREET FLOODING.
LAT...LON 4373 9092 4401 9145 4403 9156 4425 9147
4407 9115 4407 9091
TIME...MOT...LOC 1255Z 228DEG 41KT 4421 9109 4410 9089
4403 9074
$$
SHEAThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 8:48 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 72 min |
| May 2, 9:19 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 56 min |
| May 2, 9:23 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 67 min |
| May 2, 9:33 PM CDT | Tornado Warning | ARX | Buffalo | 27 min |
| May 2, 9:53 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 52 min |
| May 2, 10:26 PM CDT | Severe Thunderstorm Warning | ARX | Jackson | 30 min |
| May 3, 7:45 AM CDT | Severe Thunderstorm Warning | ARX | Adams | 30 min |
| May 3, 8:09 AM CDT | Severe Thunderstorm Warning | ARX | Richland | 26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.