Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS La Crosse, WI

May 25, 2018Buffalo County, Trempealeau County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at May 25, 2018, 7:32 PM CDT for Buffalo County, Trempealeau County, Wisconsin. It was in force for 43 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 25, 2018, 7:32 PM CDT (00:32 UTC)
Expired: May 25, 2018, 8:15 PM CDT
In force: 43 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Buffalo County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 87 km from the middle of the area, began a volume at 00:35 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 25, 2:02 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 149 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: 240 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 2091 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

607 
WUUS53 KARX 260032
SVRARX
WIC011-121-260115-
/O.NEW.KARX.SV.W.0021.180526T0032Z-180526T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
732 PM CDT FRI MAY 25 2018

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Northern Buffalo County in west central Wisconsin...
  Northern Trempealeau County in west central Wisconsin...

* Until 815 PM CDT

* At 731 PM CDT, severe thunderstorms were located along a line
  extending from near Elk Mound to 10 miles northwest of Mondovi to
  near Durand, moving east at 25 mph.

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

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Severe thunderstorms will be near...
  Modena around 750 PM CDT. 
  Mondovi around 755 PM CDT. 
  Strum and Osseo around 815 PM CDT. 

Other locations impacted by these severe thunderstorms include Eleva,
Gilmanton, Pigeon Falls, Nelson and Chimney Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4460 9197 4459 9117 4437 9117 4440 9205
      4441 9208 4442 9208
TIME...MOT...LOC 0031Z 290DEG 22KT 4482 9161 4471 9175 4465 9189 

HAIL...0.88IN
WIND...60MPH
 
$$

Lawrence

3 follow-up statements

717 
WWUS53 KARX 260045
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
745 PM CDT FRI MAY 25 2018

WIC011-121-260115-
/O.CON.KARX.SV.W.0021.000000T0000Z-180526T0115Z/
Buffalo WI-Trempealeau WI-
745 PM CDT FRI MAY 25 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHERN BUFFALO AND NORTHERN TREMPEALEAU COUNTIES...

At 744 PM CDT, severe thunderstorms were located along a line
extending from 7 miles southwest of Altoona to near Mondovi to 6
miles north of Modena, moving southeast at 30 mph.

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

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

These severe storms will be near...
  Strum around 810 PM CDT. 
  Osseo around 815 PM CDT. 

Other locations impacted by these severe thunderstorms include Eleva,
Gilmanton, Pigeon Falls, Nelson and Chimney Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4459 9117 4437 9117 4440 9205 4441 9208
      4442 9208 4460 9195
TIME...MOT...LOC 0044Z 307DEG 24KT 4472 9153 4461 9167 4455 9181 

HAIL...0.75IN
WIND...60MPH
 
$$

Lawrence

624 
WWUS53 KARX 260055
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
755 PM CDT FRI MAY 25 2018

WIC011-121-260115-
/O.CON.KARX.SV.W.0021.000000T0000Z-180526T0115Z/
Buffalo WI-Trempealeau WI-
755 PM CDT FRI MAY 25 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHEASTERN BUFFALO AND NORTHERN TREMPEALEAU COUNTIES...

At 755 PM CDT, severe thunderstorms were located along a line
extending from near Strum to 6 miles southeast of Mondovi to near
Modena, moving southeast at 30 mph.

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

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

These severe storms will be near...
  Strum around 805 PM CDT. 
  Osseo around 815 PM CDT. 

Other locations impacted by these severe thunderstorms include Eleva,
Gilmanton, Pigeon Falls, Chimney Rock and Mondovi Airfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4459 9117 4437 9117 4440 9194 4450 9193
      4460 9186
TIME...MOT...LOC 0055Z 305DEG 27KT 4461 9143 4450 9157 4444 9171 

HAIL...0.75IN
WIND...60MPH
 
$$

DL

435 
WWUS53 KARX 260110
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
810 PM CDT FRI MAY 25 2018

WIC011-121-260119-
/O.EXP.KARX.SV.W.0021.000000T0000Z-180526T0115Z/
Buffalo WI-Trempealeau WI-
810 PM CDT FRI MAY 25 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BUFFALO AND
NORTHERN TREMPEALEAU COUNTIES WILL EXPIRE AT 815 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.  However, small 
hail and gusty winds to 45 mph are still possible with these 
thunderstorms as they move into central portions of Trempealeau 
and Buffalo Counties.

A severe thunderstorm watch remains in effect until 900 PM CDT for
west central Wisconsin.

LAT...LON 4459 9117 4437 9117 4440 9194 4450 9193
      4460 9186
TIME...MOT...LOC 0109Z 290DEG 22KT 4459 9135 4448 9149 4442 9163 

$$

Lawrence

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 7:05 PM CDT	Severe Thunderstorm Warning	ARX	Crawford, Grant	40 min
May 25, 7:40 PM CDT	Severe Thunderstorm Warning	ARX	Crawford, Grant	65 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2018 Every severe thunderstorm warning in 2018

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.