Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 82, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Aug 2, 2012, 3:22 AM CDT for Vernon County, Wisconsin; Allamakee County, Iowa; Houston County, Minnesota. It was in force for 38 min. 2 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
- Aug 2, 2012, 3:22 AM CDT (08:22 UTC)
- Expired
- Aug 2, 2012, 4:00 AM CDT
- In force
- 38 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Allamakee County, IA, Houston County, MN, Vernon County, WI
The radar
The La Crosse radar (KARX), 39 km from the middle of the area, began a volume at 08:23 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 |
|---|---|---|---|
| Aug 2, 3:27 AM CDT | HAIL 0.75 | 4 Ne Eitzen, MN | |
| Aug 2, 3:40 AM CDT | TSTM WND DMG | 4 Ssw Reno, MN | 4 TO 5 FOOT LONG TREE BRANCHES DOWN. |
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 00:00Z, 8.4 hours before the alert went out and 224 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
- 2247 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1724 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
155
WUUS53 KARX 020822
SVRARX
IAC005-MNC055-WIC123-020900-
/O.NEW.KARX.SV.W.0082.120802T0822Z-120802T0900Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
322 AM CDT THU AUG 2 2012
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN ALLAMAKEE COUNTY IN NORTHEAST IOWA...
SOUTHERN HOUSTON COUNTY IN SOUTHEAST MINNESOTA...
WESTERN VERNON COUNTY IN SOUTHWEST WISCONSIN...
* UNTIL 400 AM CDT
* AT 319 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR DUN ROMIN PARK CAMPGROUND...OR
NEAR CALEDONIA...MOVING EAST AT 25 MPH. THIS STORM CAN PRODUCE
QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
COUNTY ROADS A 26 AND X 6 A AROUND 330 AM...
COUNTY 5 AND PEYTON ROAD AND FREEBURG AROUND 335 AM...
COUNTY ROADS 3 AND 24 AROUND 340 AM...
NEW ALBIN AND BROWNSVILLE AROUND 345 AM...
STODDARD AND GENOA AROUND 350 AM...
ROMANCE AROUND 355 AM...
RED MOUND AROUND 400 AM...
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 4345 9161 4350 9161 4350 9162 4372 9161
4373 9111 4342 9111
TIME...MOT...LOC 0821Z 268DEG 23KT 4356 9148
WIND...HAIL 60MPH 1.00IN
$$
HALBACH2 follow-up statements
375
WWUS53 KARX 020836
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
336 AM CDT THU AUG 2 2012
IAC005-MNC055-WIC123-020900-
/O.CON.KARX.SV.W.0082.000000T0000Z-120802T0900Z/
ALLAMAKEE IA-HOUSTON MN-VERNON WI-
336 AM CDT THU AUG 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
VERNON...SOUTHERN HOUSTON AND NORTHERN ALLAMAKEE COUNTIES UNTIL 400
AM CDT...
AT 332 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR COUNTY 5 AND PEYTON ROAD...OR 9
MILES SOUTHEAST OF CALEDONIA...MOVING EAST AT 30 MPH. THIS STORM CAN
PRODUCE LARGE DAMAGING HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS
IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
NEW ALBIN AND RENO AROUND 340 AM...
STODDARD AND GENOA AROUND 345 AM...
ROMANCE AND VICTORY AROUND 350 AM...
RED MOUND AND COUNTY ROADS K AND O AROUND 355 AM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.
&&
LAT...LON 4345 9161 4350 9161 4350 9162 4372 9161
4373 9111 4342 9111
TIME...MOT...LOC 0836Z 274DEG 26KT 4353 9135
WIND...HAIL 60MPH 1.75IN
$$
HALBACH314
WWUS53 KARX 020848
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
348 AM CDT THU AUG 2 2012
IAC005-MNC055-WIC123-020900-
/O.CON.KARX.SV.W.0082.000000T0000Z-120802T0900Z/
ALLAMAKEE IA-HOUSTON MN-VERNON WI-
348 AM CDT THU AUG 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
VERNON...SOUTHEASTERN HOUSTON AND NORTH CENTRAL ALLAMAKEE COUNTIES
UNTIL 400 AM CDT...
AT 345 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR NEW ALBIN...OR 11 MILES NORTH OF
LANSING...MOVING EAST AT 30 MPH. THIS STORM CAN PRODUCE LARGE
DAMAGING HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS IN EXCESS OF 60
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
VICTORY AROUND 350 AM...
RED MOUND AND COUNTY ROADS K AND O AROUND 355 AM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.
&&
LAT...LON 4343 9131 4344 9150 4362 9136 4363 9111
4342 9111
TIME...MOT...LOC 0848Z 274DEG 26KT 4352 9123
WIND...HAIL 60MPH 1.75IN
$$
HALBACHThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 12:25 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, Juneau | 33 min |
| Aug 2, 3:59 AM CDT | Severe Thunderstorm Warning | ARX | Crawford, Richland, Vernon | 46 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2012Severe Thunderstorm Warnings in Iowa, 2012Severe Thunderstorm Warnings in Minnesota, 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.