Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 91, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Aug 16, 2012, 1:08 AM CDT for Monroe County, Vernon County, Wisconsin. It was in force for 37 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
- Aug 16, 2012, 1:08 AM CDT (06:08 UTC)
- Expired
- Aug 16, 2012, 1:45 AM CDT
- In force
- 37 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Monroe County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 41 km from the middle of the area, began a volume at 06:10 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 16, 1:13 AM CDT | TSTM WND GST 60 | Leon, WI | |
| Aug 16, 1:13 AM CDT | HAIL 1 | 2 Ssw Sparta, WI | 3 MINUTES OF DIME TO QUARTER SIZED HAIL WITH WINDS AT 45 TO 50 MPH AT THE INTERSECTION OF INTERSTATE 90 EXIT 25 AND HWY 27. |
| Aug 16, 1:13 AM CDT | HAIL 1 | Leon, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 6.1 hours before the alert went out and 217 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
- 579 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1134 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
963 WUUS53 KARX 160608 SVRARX WIC081-123-160645- /O.NEW.KARX.SV.W.0091.120816T0608Z-120816T0645Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 108 AM CDT THU AUG 16 2012 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN VERNON COUNTY IN SOUTHWEST WISCONSIN... SOUTHERN MONROE COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 145 AM CDT * AT 105 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED NEAR I 90 EXIT 25...OR NEAR SPARTA... MOVING EAST AT 45 MPH. THIS STORM HAS A HISTORY OF PRODUCING BOTH QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. TRAINED WEATHER SPOTTERS HAVE ALREADY REPORTED QUARTER SIZE HAIL AND WINDS OF 60 MPH WITH THIS STORM FROM TREMPEALEAU TO HOLMEN. * THE SEVERE THUNDERSTORM WILL BE NEAR... MELVINA AROUND 110 AM... FORT MC COY AROUND 115 AM... NORWALK AND ST MARYS AROUND 120 AM... TOMAH AND WILTON AROUND 125 AM... TUNNEL TRAIL CAMPGROUND AND WILDCAT MOUNTAIN STATE PARK AROUND 130 AM... HOFFMAN CORNERS AND CLIFTON AROUND 135 AM... KENDALL AND GLENDALE AROUND 140 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 4381 9092 4405 9091 4399 9032 4355 9031 TIME...MOT...LOC 0607Z 287DEG 41KT 4390 9083 WIND...HAIL 60MPH 1.00IN $$ HALBACH
3 follow-up statements
471 WWUS53 KARX 160622 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 122 AM CDT THU AUG 16 2012 WIC081-123-160645- /O.CON.KARX.SV.W.0091.000000T0000Z-120816T0645Z/ MONROE WI-VERNON WI- 122 AM CDT THU AUG 16 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN VERNON AND SOUTHERN MONROE COUNTIES UNTIL 145 AM CDT... TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZE HAIL AND WINDS OF 60 MPH IN HOLMEN WITH THESE SEVERE THUNDERSTORMS. AT 118 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE THUNDERSTORM WAS LOCATED NEAR FARMERS VALLEY...OR 7 MILES SOUTHEAST OF SPARTA...MOVING EAST AT 40 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... TOMAH AND RIDGEVILLE AROUND 130 AM... TUNNEL TRAIL CAMPGROUND AROUND 135 AM... KENDALL AROUND 140 AM... HILLSBORO AND GLENDALE AROUND 145 AM... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS. && LAT...LON 4381 9092 4405 9091 4399 9032 4355 9031 TIME...MOT...LOC 0622Z 283DEG 35KT 4387 9065 WIND...HAIL 60MPH 1.00IN $$ HALBACH
005 WWUS53 KARX 160633 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 133 AM CDT THU AUG 16 2012 WIC123-160643- /O.CAN.KARX.SV.W.0091.000000T0000Z-120816T0645Z/ VERNON WI- 133 AM CDT THU AUG 16 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN VERNON COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4387 9087 4405 9091 4399 9032 4373 9031 TIME...MOT...LOC 0633Z 283DEG 33KT 4385 9054 $$ WIC081-160645- /O.CON.KARX.SV.W.0091.000000T0000Z-120816T0645Z/ MONROE WI- 133 AM CDT THU AUG 16 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN MONROE COUNTY UNTIL 145 AM CDT... AT 131 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED NEAR RIDGEVILLE...OR 10 MILES SOUTH OF TOMAH...MOVING EAST AT 40 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... TUNNEL TRAIL CAMPGROUND AROUND 140 AM... KENDALL AND GLENDALE AROUND 145 AM... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS. && LAT...LON 4387 9087 4405 9091 4399 9032 4373 9031 TIME...MOT...LOC 0633Z 283DEG 33KT 4385 9054 WIND...HAIL 60MPH 1.00IN $$ HALBACH
983 WWUS53 KARX 160639 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 139 AM CDT THU AUG 16 2012 WIC081-160649- /O.EXP.KARX.SV.W.0091.000000T0000Z-120816T0645Z/ MONROE WI- 139 AM CDT THU AUG 16 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MONROE COUNTY WILL EXPIRE AT 145 AM 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 4387 9087 4405 9091 4399 9032 4373 9031 TIME...MOT...LOC 0639Z 283DEG 33KT 4384 9047 $$ HALBACH
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 11:37 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 38 min |
| Aug 16, 12:03 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 27 min |
| Aug 16, 12:29 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, La Crosse, Monroe, Trempealeau | 46 min |
| Aug 16, 3:09 AM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 36 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.