Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS La Crosse, WI

April 9, 2017Taylor County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Apr 9, 2017, 3:20 PM CDT for Taylor County, Wisconsin. It was in force for 25 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: Apr 9, 2017, 3:20 PM CDT (20:20 UTC)
Expired: Apr 9, 2017, 3:45 PM CDT
In force: 25 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), 150 km from the middle of the area, began a volume at 20:22 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
Apr 9, 3:29 PM CDT	HAIL 0.5	3 Nnw Lublin, WI	TRAINED SPOTTER REPORTED HAIL SIZE OF PEA TO LESS THAN A DIME FOUR MILES NORTH OF LUBLIN.

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 12:00Z, 8.3 hours before the alert went out and 211 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1538 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

462 
WUUS53 KARX 092020
SVRARX
WIC119-092045-
/O.NEW.KARX.SV.W.0021.170409T2020Z-170409T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
320 PM CDT SUN APR 9 2017

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Southwestern Taylor County in north central Wisconsin...

* Until 345 PM CDT

* At 320 PM CDT, a severe thunderstorm was located 9 miles north of
  Thorp, or 19 miles west of Medford, moving northeast at 35 mph.

  HAZARD...Quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* this severe thunderstorm will remain over mainly rural areas of
  southwestern Taylor County, including the following locations:
  Gilman, Lublin, Polley, Perkinstown and Kathryn Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4510 9041 4503 9061 4503 9083 4512 9090
      4528 9057
TIME...MOT...LOC 2020Z 240DEG 32KT 4509 9075 

HAIL...1.00IN
WIND...<50MPH
 
$$

RRS

2 follow-up statements

085 
WWUS53 KARX 092028
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
328 PM CDT SUN APR 9 2017

WIC119-092045-
/O.CON.KARX.SV.W.0021.000000T0000Z-170409T2045Z/
Taylor WI-
328 PM CDT SUN APR 9 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR SOUTHWESTERN TAYLOR COUNTY...

At 328 PM CDT, a severe thunderstorm was located 12 miles north of
Owen, or 13 miles west of Medford, moving northeast at 40 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

This severe thunderstorm will remain over mainly rural areas of 
southwestern Taylor County, including the following locations: 
Lublin, Perkinstown, Kathryn Lake and Highway 64 And County D D.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away 
from windows. Lightning is one of nature's leading killers. 
Remember, if you can hear thunder, you are close enough to be struck 
by lightning.

&&

LAT...LON 4510 9041 4505 9063 4507 9074 4516 9073
      4528 9057
TIME...MOT...LOC 2028Z 242DEG 36KT 4512 9062 

HAIL...1.00IN
WIND...<50MPH
 
$$

RRS

238 
WWUS53 KARX 092037
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
337 PM CDT SUN APR 9 2017

WIC119-092047-
/O.EXP.KARX.SV.W.0021.000000T0000Z-170409T2045Z/
Taylor WI-
337 PM CDT SUN APR 9 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN TAYLOR COUNTY
WILL EXPIRE AT 345 PM CDT...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning will be allowed to expire at 345 pm.

LAT...LON 4510 9041 4505 9063 4507 9074 4516 9073
      4528 9057
TIME...MOT...LOC 2037Z 240DEG 32KT 4516 9053 

$$

RRS

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 5:14 PM CDT	Special Weather Statement	ARX	Taylor	31 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2017 Every severe thunderstorm warning in 2017

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.