Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 73, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jul 18, 2012, 4:57 PM CDT for Crawford County, Wisconsin. It was in force for 33 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
- Jul 18, 2012, 4:57 PM CDT (21:57 UTC)
- Expired
- Jul 18, 2012, 5:30 PM CDT
- In force
- 33 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 0.5 in
- Wind
- 60.0 mph
County Crawford County, WI
The radar
The La Crosse radar (KARX), 74 km from the middle of the area, began a volume at 21:56 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 |
|---|---|---|---|
| Jul 18, 5:01 PM CDT | TSTM WND DMG | Prairie Du Chien, WI | TREES AND POWERLINES DOWN. |
| Jul 18, 5:03 PM CDT | TSTM WND DMG | Mount Zion, WI | NUMEROUS BRANCHES DOWN AND A FEW TREES DOWN ON RESIDENCE AND NEIGHBORS RESIDENCE. |
| Jul 18, 5:12 PM CDT | TSTM WND GST 72 | Prairie Du Chien, WI | MATURE TREES DOWN IN PARTS OF TOWN. |
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 |
|---|---|---|---|
| Jul 18, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.0 hours before the alert went out and 177 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
- 1900 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1674 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
528
WUUS53 KARX 182157
SVRARX
WIC023-182230-
/O.NEW.KARX.SV.W.0073.120718T2157Z-120718T2230Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
457 PM CDT WED JUL 18 2012
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CRAWFORD COUNTY IN SOUTHWEST WISCONSIN...
* UNTIL 530 PM CDT
* AT 452 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS ROUGHLY ALONG A LINE EXTENDING FROM LANSING TO
HARPERS FERRY TO PRAIRIE DU CHIEN...MOVING EAST AT 40 MPH. THESE
STORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH. THIS WARNING
REPLACES THE PREVIOUS WARNING FOR NORTHWEST PARTS OF CRAWFORD
COUNTY.
* THE SEVERE THUNDERSTORMS WILL BE NEAR...
LYNXVILLE AND PRAIRIE DU CHIEN AROUND 5 PM...
STEUBEN AROUND 510 PM...
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.
&&
LAT...LON 4300 9115 4314 9116 4326 9106 4332 9111
4336 9121 4342 9120 4342 9068 4317 9068
4312 9075 4311 9080 4307 9087 4307 9093
4299 9106
TIME...MOT...LOC 2156Z 273DEG 34KT 4340 9110 4322 9098
4303 9097
WIND...HAIL 60MPH <.50IN
$$
SHEA2 follow-up statements
883
WWUS53 KARX 182210
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
510 PM CDT WED JUL 18 2012
WIC023-182230-
/O.CON.KARX.SV.W.0073.000000T0000Z-120718T2230Z/
CRAWFORD WI-
510 PM CDT WED JUL 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CRAWFORD
COUNTY UNTIL 530 PM CDT...
AT 5 PM...SCATTERED THUNDERSTORMS WERE OVER MOST OF CRAWFORD COUNTY.
STRONG WINDS HAD PUSHED NEARLY TO THE CRAWFORD-RICHLAND COUNTY LINE
WHILE ADDITIONAL STORMS WERE OVER PRAIRIE DU CHIEN. IN ADDITION TO
STRONG WINDS...LIGHTNING AND HEAVY RAIN CAN BE EXPECTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STAY INDOORS AND AVOID CREEKS AND STREAMS THAT MAY FLOOD. WATCH FOR
TREES OR BRANCHES COULD TOPPLE IN HIGH WIND.
&&
LAT...LON 4300 9115 4314 9116 4326 9106 4332 9111
4336 9121 4342 9120 4342 9068 4317 9068
4312 9075 4311 9080 4307 9087 4307 9093
4299 9106
TIME...MOT...LOC 2208Z 278DEG 30KT 4336 9100 4318 9089
4307 9090
WIND...HAIL 60MPH <.50IN
$$
SHEA065
WWUS53 KARX 182227
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
527 PM CDT WED JUL 18 2012
WIC023-182236-
/O.EXP.KARX.SV.W.0073.000000T0000Z-120718T2230Z/
CRAWFORD WI-
527 PM CDT WED JUL 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR CRAWFORD COUNTY WILL EXPIRE AT
530 PM CDT...
THE STRONGEST WINDS FROM STORMS HAVE MOVED EAST OF THE AREA. WHILE
SOME HEAVY RAIN AND LIGHTNING MAY LINGER...THE SEVERE WEATHER RISK
APPEARS TO BE OVER AND HENCE THE WARNING WILL BE ALLOWED TO EXPIRE
AT 530 PM.
LAT...LON 4300 9115 4314 9116 4326 9106 4332 9111
4336 9121 4342 9120 4342 9068 4317 9068
4312 9075 4311 9080 4307 9087 4307 9093
4299 9106
TIME...MOT...LOC 2226Z 278DEG 30KT 4334 9079 4316 9069
4305 9070
$$
SHEAThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 7:19 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 38 min |
| Jul 18, 4:23 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Vernon | 52 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.