Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 61, NWS Twin Cities, MN

July 28, 2021Barron County, Chippewa County, Rusk County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 28, 2021, 8:46 PM CDT for Barron County, Chippewa County, Rusk County, Wisconsin. It was in force for 59 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: Jul 28, 2021, 8:46 PM CDT (01:46 UTC)
Expired: Jul 28, 2021, 9:45 PM CDT
In force: 59 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 70.0 mph

Counties Barron County, WI, Chippewa County, WI, Rusk County, WI

The radar

The La Crosse radar (KARX), 157 km from the middle of the area, began a volume at 01:50 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
Jul 28, 9:05 PM CDT	TSTM WND DMG	3 Sse Cameron, WI	SMALL TREES/ LARGE BRANCHES DOWN ON THE ROAD BETWEEN CAMERON AND CHETEK AT 9:05PM. HEAVY RAIN, LOTS OF LIGHTNING.

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
Jul 28, 7:17 PM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.8 hours before the alert went out and 181 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: 4815 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1185 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 374 m²/s²
0-3 km storm-relative helicity: 461 m²/s²
Significant tornado parameter: 8.9
Supercell composite: 48.1

Open this sounding in Storm Lab

The text

As transmitted.

128 
WUUS53 KMPX 290146
SVRMPX
WIC005-017-107-290245-
/O.NEW.KMPX.SV.W.0061.210729T0146Z-210729T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
846 PM CDT Wed Jul 28 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Rusk County in northwestern Wisconsin...
  Chippewa County in west central Wisconsin...
  Southeastern Barron County in northwestern Wisconsin...

* Until 945 PM CDT.

* At 845 PM CDT, a severe thunderstorm was located 11 miles south of
  Weyerhaeuser, or 17 miles southwest of Ladysmith, moving southeast
  at 50 mph.

  HAZARD...70 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* This severe thunderstorm will be near...
  Cornell around 900 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4537 9092 4499 9092 4502 9164 4507 9166
      4512 9165 4512 9167 4521 9167 4521 9171
      4550 9182 4542 9091 4538 9090
TIME...MOT...LOC 0145Z 314DEG 44KT 4527 9134 

HAIL...1.25IN
WIND...70MPH
 
$$

Dye

1 follow-up statement

969 
WWUS53 KMPX 290215
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
915 PM CDT Wed Jul 28 2021

WIC107-290222-
/O.CAN.KMPX.SV.W.0061.000000T0000Z-210729T0245Z/
Rusk WI-
915 PM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN RUSK COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
northwestern and west central Wisconsin.

LAT...LON 4527 9092 4499 9092 4502 9164 4507 9166
      4512 9165 4512 9167 4521 9167 4521 9171
      4530 9174
TIME...MOT...LOC 0212Z 314DEG 44KT 4504 9100 

$$

WIC005-017-290245-
/O.CON.KMPX.SV.W.0061.000000T0000Z-210729T0245Z/
Chippewa WI-Barron WI-
915 PM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR CHIPPEWA AND SOUTHEASTERN BARRON COUNTIES...

At 912 PM CDT, a severe thunderstorm was located near Stanley, or 25
miles northeast of Eau Claire, moving southeast at 50 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

This severe thunderstorm will remain over mainly rural areas of
Chippewa and southeastern Barron Counties, including the following
locations... Otter Lake, Jim Falls, Holcombe, Eagleton, Chippewa
Moraine State Rec Area and County Roads F And H.

Additionally, a Tornado Warning remains in effect for Chippewa 
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4527 9092 4499 9092 4502 9164 4507 9166
      4512 9165 4512 9167 4521 9167 4521 9171
      4530 9174
TIME...MOT...LOC 0212Z 314DEG 44KT 4504 9100 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

Dye

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 7:19 PM CDT	Special Weather Statement	MPX	Rusk	26 min
Jul 28, 7:37 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	23 min
Jul 28, 7:43 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Polk, Rusk	32 min
Jul 28, 8:01 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Chippewa, Rusk	44 min
Jul 28, 8:09 PM CDT	Tornado Warning	MPX	Polk	35 min
Jul 28, 8:55 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Polk	50 min
Jul 28, 9:08 PM CDT	Tornado Warning	MPX	Chippewa	37 min
Jul 28, 9:25 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Saint Croix	65 min
Jul 28, 9:30 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Eau Claire	60 min
Jul 28, 9:36 PM CDT	Tornado Warning	MPX	Saint Croix	24 min
Jul 28, 9:37 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	38 min
Jul 28, 9:55 PM CDT	Tornado Warning	MPX	Saint Croix	35 min
Jul 28, 10:09 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce, Saint Croix	51 min
Jul 28, 10:18 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire, Pepin	42 min
Jul 28, 10:21 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	24 min
Jul 28, 10:36 PM CDT	Severe Thunderstorm Warning	MPX	Pepin	39 min
Jul 28, 10:57 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce	48 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2021 Every severe thunderstorm warning in 2021

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.