Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 13, NWS La Crosse, WI

June 2, 2020Buffalo County, Trempealeau County, Wisconsin; Winona County, Minnesota

NWS La Crosse, WI issued this severe thunderstorm warning at Jun 2, 2020, 6:07 PM CDT for Buffalo County, Trempealeau County, Wisconsin; Winona County, Minnesota. It was in force for 23 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: Jun 2, 2020, 6:07 PM CDT (23:07 UTC)
Expired: Jun 2, 2020, 6:30 PM CDT
In force: 23 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Winona County, MN, Buffalo County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 47 km from the middle of the area, began a volume at 23:10 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
Jun 2, 6:10 PM CDT	HAIL 1.75	2 Sw Dodge, 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
Jun 2, 4:39 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.1 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.

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: 55 J/kg
Mixed-layer CIN: -557 J/kg
Mixed-layer LCL: 2144 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

473 
WUUS53 KARX 022307
SVRARX
MNC169-WIC011-121-022330-
/O.NEW.KARX.SV.W.0013.200602T2307Z-200602T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
607 PM CDT Tue Jun 2 2020

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  North central Winona County in southeastern Minnesota...
  Southeastern Buffalo County in west central Wisconsin...
  Southwestern Trempealeau County in west central Wisconsin...

* Until 630 PM CDT.

* At 606 PM CDT, a severe thunderstorm was located near Fountain
  City, or near Winona, moving east at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  north central Winona, southeastern Buffalo and southwestern
  Trempealeau Counties, including the following locations...
  Marshland, Minnesota City, Lock And Dam 5 A, Bluff Siding, Dodge
  and Perrot State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4407 9176 4417 9172 4417 9143 4402 9148
TIME...MOT...LOC 2306Z 282DEG 17KT 4410 9162 

HAIL...1.00IN
WIND...60MPH
 
$$

Lee

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 5:11 PM CDT	Special Weather Statement	ARX	Clark	49 min
Jun 2, 5:18 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, La Crosse, Trempealeau	42 min
Jun 2, 5:31 PM CDT	Severe Thunderstorm Warning	ARX	Jackson	44 min
Jun 2, 5:35 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson, Trempealeau	40 min
Jun 2, 5:52 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, Trempealeau	38 min
Jun 2, 5:58 PM CDT	Severe Thunderstorm Warning	ARX	La Crosse, Trempealeau	47 min
Jun 2, 5:59 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, Trempealeau	31 min
Jun 2, 6:09 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	39 min
Jun 2, 6:25 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, Juneau, La Crosse, Monroe, Trempealeau	50 min
Jun 2, 6:32 PM CDT	Severe Thunderstorm Warning	ARX	La Crosse, Monroe, Trempealeau, Vernon	43 min
Jun 2, 6:44 PM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau	46 min
Jun 2, 6:59 PM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau, Richland, Vernon	61 min
Jun 2, 5:14 PM CDT	Special Weather Statement	ARX	Winona	46 min
Jun 2, 6:31 PM CDT	Severe Thunderstorm Warning	ARX	Dodge, Mower, Olmsted	89 min
Jun 2, 6:55 PM CDT	Severe Thunderstorm Warning	ARX	Mower	80 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2020 Severe Thunderstorm Warnings in Minnesota, 2020 Every severe thunderstorm warning in 2020

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.