Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 103, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Sep 4, 2012, 6:16 PM CDT for Clark County, Wisconsin. It was in force for 29 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
- Sep 4, 2012, 6:16 PM CDT (23:16 UTC)
- Expired
- Sep 4, 2012, 6:45 PM CDT
- In force
- 29 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Clark County, WI
The radar
The La Crosse radar (KARX), 124 km from the middle of the area, began a volume at 23:18 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 |
|---|---|---|---|
| Sep 4, 6:17 PM CDT | TSTM WND DMG | 6 Sw Unity, WI | WIND GUSTS BETWEEN 617 AND 635 PM TIME ESTIMATED BLEW DOWN LARGE TREES AND POWER LINES ALONG HIGHLINE ROAD |
| Sep 4, 6:17 PM CDT | TSTM WND GST 60 | Veefkind, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 4, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.3 hours before the alert went out and 182 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
- 1547 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 496 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
668 WUUS53 KARX 042316 SVRARX WIC019-042345- /O.NEW.KARX.SV.W.0103.120904T2316Z-120904T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 616 PM CDT TUE SEP 4 2012 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN CLARK COUNTY IN CENTRAL WISCONSIN... * UNTIL 645 PM CDT * AT 613 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ROUGHLY ALONG A LINE EXTENDING FROM ABBOTSFORD TO LOYAL...MOVING EAST AT 20 MPH. THESE STORMS CAN PRODUCE PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. TRAINED WEATHER SPOTTERS HAVE ALREADY REPORTED WINDS OF 50 MPH WITH THESE STORMS. * THE SEVERE THUNDERSTORMS WILL BE NEAR... DORCHESTER AROUND 625 PM... ABBOTSFORD AROUND 630 PM... 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. && LAT...LON 4460 9031 4460 9053 4502 9034 4502 9031 TIME...MOT...LOC 2316Z 291DEG 18KT 4495 9042 4470 9055 WIND...HAIL 60MPH 0.75IN $$ JW
2 follow-up statements
121 WWUS53 KARX 042329 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 629 PM CDT TUE SEP 4 2012 WIC019-042345- /O.CON.KARX.SV.W.0103.000000T0000Z-120904T2345Z/ CLARK WI- 629 PM CDT TUE SEP 4 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN CLARK COUNTY UNTIL 645 PM CDT... TRAINED WEATHER SPOTTERS REPORTED A 60 MPH WIND GUST IN VEEFKIND AT 617 PM. AT 623 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM ABBOTSFORD TO LOYAL...MOVING EAST AT 20 MPH. THESE STORMS CAN PRODUCE PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. * LOCATIONS IMPACTED INCLUDE... VEEFKIND... RIPLINGER... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR DAMAGING WINDS AND SMALL HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4460 9031 4460 9053 4502 9034 4502 9031 TIME...MOT...LOC 2327Z 291DEG 18KT 4493 9035 4468 9048 WIND...HAIL 60MPH 0.75IN $$ JW
550 WWUS53 KARX 042344 RRA SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 644 PM CDT TUE SEP 4 2012 WIC019-042355- /O.EXP.KARX.SV.W.0103.000000T0000Z-120904T2345Z/ CLARK WI- 644 PM CDT TUE SEP 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLARK COUNTY HAS EXPIRED... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED AREA. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT TUESDAY EVENING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND WESTERN WISCONSIN. LAT...LON 4460 9031 4460 9053 4502 9034 4502 9031 TIME...MOT...LOC 2345Z 291DEG 18KT 4490 9023 4465 9036 $$ JW
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 4:39 AM CDT | Dense Fog Advisory | ARX | Adams, Buffalo, Clark, Crawford, Grant, Jackson and 7 more | 4 hr |
| Sep 4, 4:29 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 46 min |
| Sep 4, 5:17 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 28 min |
| Sep 4, 5:41 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 64 min |
| Sep 4, 5:56 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Vernon | 64 min |
| Sep 4, 6:37 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant | 38 min |
| Sep 4, 6:48 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Vernon | 57 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.