Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 30, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 20, 2012, 12:21 PM CDT for Taylor County, Wisconsin. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 20, 2012, 12:21 PM CDT (17:21 UTC)
- Expired
- May 20, 2012, 12:45 PM CDT
- In force
- 24 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Taylor County, WI
The radar
The La Crosse radar (KARX), 174 km from the middle of the area, began a volume at 17:25 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.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 5.4 hours before the alert went out and 212 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
- 752 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1614 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
744 WUUS53 KARX 201721 SVRARX WIC119-201745- /O.NEW.KARX.SV.W.0030.120520T1721Z-120520T1745Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 1221 PM CDT SUN MAY 20 2012 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL TAYLOR COUNTY IN NORTH CENTRAL WISCONSIN... * UNTIL 1245 PM CDT * AT 1220 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED NEAR COUNTY ROADS D AND N...OR 15 MILES NORTHWEST OF MEDFORD...MOVING NORTH AT 50 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. 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 4538 9039 4522 9049 4522 9069 4538 9065 TIME...MOT...LOC 1722Z 199DEG 43KT 4532 9056 WIND...HAIL 60MPH 1.00IN $$ BOYNE
2 follow-up statements
954 WWUS53 KARX 201732 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 1232 PM CDT SUN MAY 20 2012 WIC119-201745- /O.CON.KARX.SV.W.0030.000000T0000Z-120520T1745Z/ TAYLOR WI- 1232 PM CDT SUN MAY 20 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL TAYLOR COUNTY UNTIL 1245 PM CDT... AT 1229 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED NEAR COUNTY ROADS D AND N...OR 18 MILES NORTHWEST OF MEDFORD...MOVING NORTH AT 45 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4538 9039 4522 9049 4522 9069 4538 9065 TIME...MOT...LOC 1733Z 202DEG 37KT 4541 9050 WIND...HAIL 60MPH 1.00IN $$ BOYNE
808 WWUS53 KARX 201740 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 1240 PM CDT SUN MAY 20 2012 WIC119-201750- /O.EXP.KARX.SV.W.0030.000000T0000Z-120520T1745Z/ TAYLOR WI- 1240 PM CDT SUN MAY 20 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL TAYLOR COUNTY WILL EXPIRE AT 1245 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN TAYLOR COUNTY UNTIL 130 PM. IN ADDITION...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR NORTH CENTRAL WISCONSIN. LAT...LON 4538 9039 4522 9049 4522 9069 4538 9065 TIME...MOT...LOC 1740Z 202DEG 37KT 4547 9042 $$ AJ
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 12:26 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 57 min |
| May 20, 1:35 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 14 min |
| May 20, 1:52 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.