Alert archive / Wisconsin / Tornado Warnings in 2020

Tornado Warning 4, NWS La Crosse, WI

May 23, 2020Grant County, Wisconsin

NWS La Crosse, WI issued this tornado warning at May 23, 2020, 3:56 PM CDT for Grant County, Wisconsin. It was in force for 35 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 23, 2020, 3:56 PM CDT (20:56 UTC)
Expired: May 23, 2020, 4:31 PM CDT
In force: 35 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Grant County, WI

The radar

The La Crosse radar (KARX), 107 km from the middle of the area, began a volume at 20:57 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 12:33 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.9 hours before the alert went out and 145 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: 145 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 859 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

632 
WFUS53 KARX 232056
TORARX
WIC043-232145-
/O.NEW.KARX.TO.W.0004.200523T2056Z-200523T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
356 PM CDT Sat May 23 2020

The National Weather Service in La Crosse has issued a

* Tornado Warning for...
  Central Grant County in southwestern Wisconsin...

* Until 445 PM CDT.
    
* At 355 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles northwest of Lancaster, moving northwest at 10 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4285 9071 4284 9078 4297 9101 4302 9080
TIME...MOT...LOC 2055Z 132DEG 9KT 4292 9080 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JSB

3 follow-up statements

079 
WWUS53 KARX 232111
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
411 PM CDT Sat May 23 2020

WIC043-232145-
/O.CON.KARX.TO.W.0004.000000T0000Z-200523T2145Z/
Grant WI-
411 PM CDT Sat May 23 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR CENTRAL
GRANT COUNTY...
    
At 410 PM CDT, a confirmed tornado was located near Bloomington, or 7
miles northwest of Lancaster, moving northwest at 5 mph.

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado. This storm has had a 
         history of producing funnel clouds and brief tornadoes.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
central Grant County, including the following locations... Mount Hope
and Klondyke Secluded Acres.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4285 9071 4284 9078 4297 9101 4302 9080
TIME...MOT...LOC 2110Z 125DEG 7KT 4290 9084 

TORNADO...OBSERVED
HAIL...0.00IN

$$

CA

947 
WWUS53 KARX 232123
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
423 PM CDT Sat May 23 2020

WIC043-232145-
/O.CON.KARX.TO.W.0004.000000T0000Z-200523T2145Z/
Grant WI-
423 PM CDT Sat May 23 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR CENTRAL
GRANT COUNTY...
    
At 421 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Bloomington, or 9 miles northwest of Lancaster,
moving northwest at 10 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.  This storm has had a history 
         of producing funnel clouds and brief tornadoes.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4285 9071 4284 9078 4297 9101 4302 9080
TIME...MOT...LOC 2121Z 132DEG 9KT 4292 9087 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JSB

142 
WWUS53 KARX 232131
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
431 PM CDT Sat May 23 2020

WIC043-232140-
/O.CAN.KARX.TO.W.0004.000000T0000Z-200523T2145Z/
Grant WI-
431 PM CDT Sat May 23 2020

...THE TORNADO WARNING FOR CENTRAL GRANT COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CDT for southwestern
Wisconsin.

LAT...LON 4285 9071 4284 9078 4297 9101 4302 9080
TIME...MOT...LOC 2129Z 132DEG 9KT 4294 9089 

$$

JSB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 3:16 PM CDT	Tornado Warning Tornado observed	ARX	Grant	44 min

Nearby

Tornado Warnings in Wisconsin, 2020 Every tornado warning in 2020 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.