Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 32, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 20, 2012, 1:35 PM CDT for Taylor County, Wisconsin. It was in force for 14 min. 1 report 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
- May 20, 2012, 1:35 PM CDT (18:35 UTC)
- Expired
- May 20, 2012, 1:49 PM CDT
- In force
- 14 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Taylor County, WI
The radar
The La Crosse radar (KARX), 168 km from the middle of the area, began a volume at 18:34 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 |
|---|---|---|---|
| May 20, 1:39 PM CDT | HAIL 1 | 3 E Jump River, WI | A LOT OF PENNY TO NICKEL HAIL SIZE HAIL STONES...ALONG WITH A FEW QUARTER SIZE. |
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 |
|---|---|---|---|
| May 20, 12:24 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.6 hours before the alert went out and 228 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.
305 WUUS53 KARX 201835 SVRARX WIC119-201900- /O.NEW.KARX.SV.W.0032.120520T1835Z-120520T1900Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 135 PM CDT SUN MAY 20 2012 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN TAYLOR COUNTY IN NORTH CENTRAL WISCONSIN... * UNTIL 200 PM CDT * AT 130 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED NEAR JUMP RIVER...OR 19 MILES SOUTHEAST OF LADYSMITH...MOVING NORTHEAST AT 35 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL. SPOTTERS 3 MILES NORTH OF HANNIBAL REPORTED QUARTER SIZE HAIL WITH THIS STORM AT 122 PM CDT. * THE SEVERE THUNDERSTORM WILL BE NEAR... COUNTY ROADS D AND N AROUND 145 PM... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4523 9074 4530 9089 4538 9083 4538 9054 TIME...MOT...LOC 1834Z 222DEG 32KT 4534 9074 WIND...HAIL <50MPH 1.00IN $$ BOYNE
2 follow-up statements
278 WWUS53 KARX 201840 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 140 PM CDT SUN MAY 20 2012 WIC119-201900- /O.CON.KARX.SV.W.0032.000000T0000Z-120520T1900Z/ TAYLOR WI- 140 PM CDT SUN MAY 20 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN TAYLOR COUNTY UNTIL 200 PM CDT... AT 139 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED NEAR JUMP RIVER...OR 20 MILES EAST OF LADYSMITH...MOVING NORTHEAST AT 35 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4523 9074 4530 9089 4538 9083 4538 9054 TIME...MOT...LOC 1841Z 222DEG 32KT 4538 9068 WIND...HAIL <50MPH 1.00IN $$ BOYNE
772 WWUS53 KARX 201849 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 149 PM CDT SUN MAY 20 2012 WIC119-201859- /O.CAN.KARX.SV.W.0032.000000T0000Z-120520T1900Z/ TAYLOR WI- 149 PM CDT SUN MAY 20 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TAYLOR COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR NORTHWESTERN WISCONSIN. LAT...LON 4523 9074 4530 9089 4538 9083 4538 9054 TIME...MOT...LOC 1849Z 222DEG 32KT 4544 9061 $$ BOYNE
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 12:21 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 24 min |
| May 20, 12:26 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 57 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.