Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 5, NWS Twin Cities, MN

May 25, 2020Chippewa County, Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 25, 2020, 10:01 AM CDT for Chippewa County, Eau Claire County, Wisconsin. It was in force for 29 min. 10 reports 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: May 25, 2020, 10:01 AM CDT (15:01 UTC)
Expired: May 25, 2020, 10:30 AM CDT
In force: 29 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Chippewa County, WI, Eau Claire County, WI

The radar

The La Crosse radar (KARX), 116 km from the middle of the area, began a volume at 15:04 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
May 25, 10:07 AM CDT	HAIL 0.5	2 W Eau Claire, WI	REPORT FROM MPING: HALF-INCH (0.50 IN.).
May 25, 10:08 AM CDT	HAIL 1.25	2 Wnw Eau Claire, WI
May 25, 10:08 AM CDT	HAIL 1.25	2 Wnw Eau Claire, WI
May 25, 10:10 AM CDT	HAIL 0.5	1 W Eau Claire, WI	REPORT FROM MPING: HALF-INCH (0.50 IN.).
May 25, 10:10 AM CDT	HAIL 1	5 Wnw Eau Claire, WI
May 25, 10:10 AM CDT	HAIL 1	5 Wnw Eau Claire, WI
May 25, 10:11 AM CDT	TSTM WND DMG	2 Nne Eau Claire, WI	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 NNE EAU CLAIRE. SOCIAL MEDIA PICTURE OF A LARGE TREE UPROOTED NEAR NORTH HIGH SCHOOL IN EAU CLAIRE. IN ADDITION, THERE WAS DAMAGE TO THE NORTH HIGH SCHOOL TENNIS COURT FENCE.
May 25, 10:11 AM CDT	TSTM WND DMG	2 Nne Eau Claire, WI	SOCIAL MEDIA PICTURE OF A LARGE TREE UPROOTED NEAR NORTH HIGH SCHOOL IN EAU CLAIRE.
May 25, 10:11 AM CDT	TSTM WND DMG	2 Nne Eau Claire, WI	SOCIAL MEDIA PICTURE OF A LARGE TREE UPROOTED NEAR NORTH HIGH SCHOOL IN EAU CLAIRE. IN ADDITION, THERE WAS DAMAGE TO THE NORTH HIGH SCHOOL TENNIS COURT FENCE.
May 25, 10:21 AM CDT	TSTM WND DMG	2 Ne Eau Claire, WI	REPORT FROM MPING: TREES UPROOTED OR SNAPPED; ROOF BLOWN OFF.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 3.0 hours before the alert went out and 164 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: 41 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 1275 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

513 
WUUS53 KMPX 251501
SVRMPX
WIC017-035-251530-
/O.NEW.KMPX.SV.W.0005.200525T1501Z-200525T1530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1001 AM CDT Mon May 25 2020

The National Weather Service in The Twin Cities has issued a

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

* Until 1030 AM CDT.

* At 1000 AM CDT, a severe thunderstorm was located 7 miles 
  southeast of Elk Mound, or 8 miles southwest of Eau Claire, moving 
  north-northeast at 35 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.

* Locations impacted include...
  Eau Claire, Chippewa Falls, Altoona, Lake Hallie, Lake Wissota,
  Tilden, Bateman, Eau Claire Airport and Seymour.

This includes the following highways...
 Interstate 94 in Wisconsin between mile markers 57 and 69.
 U.S. Highway 53 between mile markers 86 and 103.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4475 9146 4473 9161 4477 9166 4487 9165
      4506 9157 4494 9125
TIME...MOT...LOC 1500Z 202DEG 29KT 4480 9159 

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

TDH

2 follow-up statements

231 
WWUS53 KMPX 251508
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1008 AM CDT Mon May 25 2020

WIC017-035-251530-
/O.CON.KMPX.SV.W.0005.000000T0000Z-200525T1530Z/
Chippewa WI-Eau Claire WI-
1008 AM CDT Mon May 25 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT
FOR SOUTHWESTERN CHIPPEWA AND NORTHWESTERN EAU CLAIRE COUNTIES...

At 1008 AM CDT, a severe thunderstorm was located near Eau Claire,
moving north-northeast at 35 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Eau Claire, Chippewa Falls, Altoona, Lake Hallie, Lake Wissota,
Tilden, Bateman, Eau Claire Airport and Seymour.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4478 9150 4478 9158 4482 9164 4487 9165
      4506 9157 4494 9125
TIME...MOT...LOC 1508Z 202DEG 29KT 4486 9155 

HAIL...2.00IN
WIND...60MPH
 
$$

TDH

258 
WWUS53 KMPX 251528
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1028 AM CDT Mon May 25 2020

WIC017-035-251538-
/O.EXP.KMPX.SV.W.0005.000000T0000Z-200525T1530Z/
Chippewa WI-Eau Claire WI-
1028 AM CDT Mon May 25 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHIPPEWA AND
NORTHWESTERN EAU CLAIRE COUNTIES WILL EXPIRE AT 1030 AM CDT...
                
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 will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

LAT...LON 4478 9150 4478 9158 4482 9164 4487 9165
      4506 9157 4494 9125
TIME...MOT...LOC 1528Z 202DEG 29KT 4500 9147 

$$

TDH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 8:25 AM CDT	Severe Thunderstorm Warning	MPX	Pepin, Pierce	35 min
May 25, 8:56 AM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin	34 min
May 25, 9:26 AM CDT	Special Weather Statement	MPX	Pepin	34 min
May 25, 9:52 AM CDT	Special Weather Statement	MPX	Eau Claire	23 min
May 25, 10:30 AM CDT	Special Weather Statement	MPX	Chippewa	30 min
May 25, 11:01 AM CDT	Special Weather Statement	MPX	Rusk	29 min
May 25, 11:32 AM CDT	Special Weather Statement	MPX	Rusk	28 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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.