Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 60, 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, 8:01 PM CDT for Barron County, Chippewa County, Rusk County, Wisconsin. It was in force for 44 min. 4 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: Jul 28, 2021, 8:01 PM CDT (01:01 UTC)
Expired: Jul 28, 2021, 8:45 PM CDT
In force: 44 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The La Crosse radar (KARX), 167 km from the middle of the area, began a volume at 01:02 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, 8:15 PM CDT	TSTM WND DMG	6 Ne Cumberland, WI	A NUMBER OF TREES WERE DAMAGED ALONG SILVER LAKE. A BOAT WAS BLOWN OFF THE BEACH AND SOME DOCKS WERE DAMAGED. TIME ESTIMATED BASED ON RADAR.
Jul 28, 8:20 PM CDT	TSTM WND DMG	1 Ssw Bruce, WI	TREES AND POWER LINES DOWN. TIME ESTIMATED BASED ON RADAR.
Jul 28, 8:25 PM CDT	HAIL 1	1 Nnw Rice Lake, WI	SMALL BRANCHES ALSO DOWN.
Jul 28, 8:45 PM CDT	HAIL 1.25	1 W Rice Lake, WI	SPOTTER CALLED IN HALF DOLLAR HAIL, VIOLENT WIND, POWER OUT, TREES SNAPPED.

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, 1.0 hours before the alert went out and 191 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.

855 
WUUS53 KMPX 290101
SVRMPX
WIC005-017-107-290145-
/O.NEW.KMPX.SV.W.0060.210729T0101Z-210729T0145Z/

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

The National Weather Service in the Twin Cities has issued a

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

* Until 845 PM CDT.

* At 800 PM CDT, a severe thunderstorm was located 6 miles south of
  Birchwood, or 10 miles northeast of Rice Lake, moving southeast at
  45 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.

* This severe thunderstorm will be near...
  Weyerhaeuser around 815 PM CDT.
  Bruce around 820 PM CDT.

Other locations in the path of this severe thunderstorm include
Ladysmith and Sheldon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4537 9092 4503 9092 4504 9165 4521 9167
      4521 9180 4564 9216 4564 9068 4538 9068
TIME...MOT...LOC 0100Z 308DEG 39KT 4556 9154 

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

Dye

1 follow-up statement

871 
WWUS53 KMPX 290117
SVSMPX

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

WIC005-017-107-290145-
/O.CON.KMPX.SV.W.0060.000000T0000Z-210729T0145Z/
Rusk WI-Chippewa WI-Barron WI-
817 PM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR RUSK...NORTHERN CHIPPEWA AND BARRON COUNTIES...

At 816 PM CDT, a severe thunderstorm was located near Weyerhaeuser,
or 12 miles west of Ladysmith, moving southeast at 45 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 storm will be near...
  Bruce around 820 PM CDT.

Other locations in the path of this severe thunderstorm include
Ladysmith and Sheldon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4537 9092 4503 9092 4504 9165 4521 9167
      4521 9180 4564 9216 4564 9068 4538 9068
TIME...MOT...LOC 0116Z 308DEG 39KT 4546 9136 

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, 8:09 PM CDT	Tornado Warning	MPX	Polk	35 min
Jul 28, 8:46 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Chippewa, Rusk	59 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.