Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 18, NWS Twin Cities, MN

May 25, 2018Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 25, 2018, 3:33 PM CDT for Eau Claire County, Wisconsin. It was in force for 24 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, 3:33 PM CDT (20:33 UTC)
Expired: May 25, 2018, 3:57 PM CDT
In force: 24 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

County Eau Claire County, WI

The radar

The La Crosse radar (KARX), 93 km from the middle of the area, began a volume at 20:37 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 12:00Z, 8.6 hours before the alert went out and 174 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: 543 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 1022 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 245 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

209 
WUUS53 KMPX 252033
SVRMPX
WIC035-252115-
/O.NEW.KMPX.SV.W.0018.180525T2033Z-180525T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
333 PM CDT FRI MAY 25 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Eau Claire County in west central Wisconsin...

* Until 415 PM CDT

* At 332 PM CDT, a severe thunderstorm was located over Eleva, or 11
  miles east of Mondovi, moving northeast at 20 mph.

  HAZARD...Golf ball size hail. 

  SOURCE...Trained weather spotters. 

  IMPACT...People and animals outdoors will be injured. Expect 
           damage to roofs, siding, windows, and vehicles. 

* This severe thunderstorm will remain over mainly rural areas of
  southwestern Eau Claire County, including the following locations:
  Allen, Foster and Brackett.

This includes Interstate 94 in Wisconsin between mile markers 72 and
86.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4460 9154 4461 9155 4480 9137 4460 9108
TIME...MOT...LOC 2032Z 237DEG 17KT 4458 9144 

HAIL...1.75IN
WIND...<50MPH
 
$$

BORGHOFF

2 follow-up statements

203 
WWUS53 KMPX 252046
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
346 PM CDT FRI MAY 25 2018

WIC035-252115-
/O.CON.KMPX.SV.W.0018.000000T0000Z-180525T2115Z/
Eau Claire WI-
346 PM CDT FRI MAY 25 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR SOUTHWESTERN EAU CLAIRE COUNTY...

At 346 PM CDT, a severe thunderstorm was located over Foster, or 17
miles north of Whitehall, moving east at 30 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 Eau Claire County, including the following locations:
Allen, Foster and Brackett.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4460 9154 4461 9155 4480 9137 4460 9108
TIME...MOT...LOC 2046Z 249DEG 27KT 4461 9130 

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

BORGHOFF

363 
WWUS53 KMPX 252057
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
357 PM CDT FRI MAY 25 2018

WIC035-252107-
/O.CAN.KMPX.SV.W.0018.000000T0000Z-180525T2115Z/
Eau Claire WI-
357 PM CDT FRI MAY 25 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN EAU CLAIRE COUNTY
IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until 800 PM CDT for
west central Wisconsin.

LAT...LON 4460 9154 4461 9155 4480 9137 4460 9108
TIME...MOT...LOC 2056Z 237DEG 17KT 4464 9124 

$$

BORGHOFF

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 7:43 PM CDT	Severe Thunderstorm Warning	MPX	Pierce, Saint Croix	47 min
May 24, 8:23 PM CDT	Special Weather Statement	MPX	Pierce, Saint Croix	37 min
May 24, 9:03 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	28 min
May 25, 7:07 AM CDT	Special Weather Statement	MPX	Pepin	23 min
May 25, 7:55 AM CDT	Special Weather Statement	MPX	Eau Claire	50 min
May 25, 10:00 AM CDT	Special Weather Statement	MPX	Eau Claire	60 min
May 25, 10:58 AM CDT	Special Weather Statement	MPX	Eau Claire	62 min
May 25, 3:45 PM CDT	Special Weather Statement	MPX	Polk	45 min
May 25, 4:46 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn	44 min
May 25, 4:49 PM CDT	Special Weather Statement	MPX	Chippewa	26 min
May 25, 5:03 PM CDT	Severe Thunderstorm Warning	MPX	Polk, Saint Croix	57 min
May 25, 5:04 PM CDT	Special Weather Statement	MPX	Saint Croix	26 min
May 25, 6:01 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	44 min
May 25, 6:42 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Chippewa, Dunn	37 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.