Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS Green Bay, WI

August 11, 20216 counties in Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Aug 11, 2021, 3:30 PM CDT for 6 counties in Wisconsin. It was in force for 60 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: Aug 11, 2021, 3:30 PM CDT (20:30 UTC)
Expired: Aug 11, 2021, 4:30 PM CDT
In force: 60 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, WI, Door County, WI, Kewaunee County, WI, Oconto County, WI, Outagamie County, WI, Shawano County, WI

The radar

The Green Bay radar (KGRB), 20 km from the middle of the area, began a volume at 20:32 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
Aug 11, 3:41 PM CDT	TSTM WND DMG	1 Nnw Howard, WI	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 NNW HOWARD. POWER POLE AND POWER LINES IN THE ROAD. LAKEVIEW AND COTTAGE GROVE. TIME ESTIMATED BY RADAR.
Aug 11, 3:41 PM CDT	TSTM WND DMG	2 Ssw Suamico, WI	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 SSW SUAMICO. TREE DOWN.
Aug 11, 3:42 PM CDT	TSTM WND DMG	Suamico, WI	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM SUAMICO. LARGE TREE ON TRUCK. FROM SOCIAL MEDIA. DELAYED REPORT. TIME ESTIMATED.
Aug 11, 3:43 PM CDT	TSTM WND GST 47	Green Bay, WI

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
Aug 11, 12:17 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.5 hours before the alert went out and 21 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: 1499 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 678 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

As transmitted.

953 
WUUS53 KGRB 112030
SVRGRB
WIC009-029-061-083-087-115-112130-
/O.NEW.KGRB.SV.W.0083.210811T2030Z-210811T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
330 PM CDT Wed Aug 11 2021

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Brown County in northeastern Wisconsin...
  Kewaunee County in northeastern Wisconsin...
  Southern Door County in northeastern Wisconsin...
  South central Oconto County in northeastern Wisconsin...
  Northern Outagamie County in northeastern Wisconsin...
  Eastern Shawano County in northeastern Wisconsin...

* Until 430 PM CDT.

* At 330 PM CDT, severe thunderstorms were located along a line
  extending from near Pulaski to 13 miles southeast of Navarino
  Wildlife Area to near Black Creek, moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Green Bay, Kewaunee, Bay Shore Park, Pulaski, Algoma, Luxemburg,
  Black Creek, Bellevue Town, Oneida and De Pere.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

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

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

&&

LAT...LON 4440 8864 4456 8837 4476 8845 4475 8788
      4471 8792 4463 8793 4468 8781 4475 8775
      4474 8740 4464 8734 4454 8741 4442 8745
      4436 8753
TIME...MOT...LOC 2030Z 271DEG 46KT 4470 8835 4457 8829 4445 8848 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kieckbusch

7 follow-up statements

311 
WWUS53 KGRB 112036
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
336 PM CDT Wed Aug 11 2021

WIC009-029-061-083-087-115-112130-
/O.CON.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Brown WI-Kewaunee WI-Door WI-Oconto WI-Outagamie WI-Shawano WI-
336 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR BROWN...KEWAUNEE...SOUTHERN DOOR...SOUTH CENTRAL OCONTO...
NORTHERN OUTAGAMIE AND EASTERN SHAWANO COUNTIES...

At 336 PM CDT, severe thunderstorms were located along a line
extending from near Pulaski to 9 miles northwest of Green Bay to near
Black Creek, moving east at 60 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Green Bay, Kewaunee, Bay Shore Park, Pulaski, Algoma, Luxemburg,
Black Creek, Bellevue Town, Oneida and De Pere.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4440 8864 4456 8837 4476 8845 4475 8788
      4471 8792 4463 8793 4468 8781 4475 8775
      4474 8740 4464 8734 4454 8741 4442 8745
      4436 8753
TIME...MOT...LOC 2036Z 270DEG 51KT 4470 8823 4457 8817 4445 8836 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Kieckbusch

895 
WWUS53 KGRB 112048
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
348 PM CDT Wed Aug 11 2021

WIC009-029-061-083-087-115-112130-
/O.CON.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Brown WI-Kewaunee WI-Door WI-Oconto WI-Outagamie WI-Shawano WI-
348 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR BROWN...KEWAUNEE...SOUTHERN DOOR...SOUTH CENTRAL OCONTO...
NORTHERN OUTAGAMIE AND EASTERN SHAWANO COUNTIES...

At 347 PM CDT, severe thunderstorms were located along a line
extending from 9 miles northwest of Bay Shore Park to near Green Bay 
to near Bellevue Town, moving east at 55 mph.

Gusts to 47 mph were reported at Austin Straubel Airport in Green 
Bay. 

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Green Bay, Kewaunee, Bay Shore Park, Pulaski, Algoma, Luxemburg,
Black Creek, Bellevue Town, Oneida and De Pere.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4440 8864 4456 8837 4476 8845 4475 8788
      4471 8792 4463 8793 4468 8781 4475 8775
      4474 8740 4464 8734 4454 8741 4442 8745
      4436 8753
TIME...MOT...LOC 2047Z 272DEG 50KT 4469 8799 4456 8794 4443 8803 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kieckbusch

706 
WWUS53 KGRB 112050
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
350 PM CDT Wed Aug 11 2021

WIC083-087-115-112100-
/O.CAN.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Oconto WI-Outagamie WI-Shawano WI-
350 PM CDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL OCONTO...
NORTHERN OUTAGAMIE AND EASTERN SHAWANO COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

LAT...LON 4438 8804 4456 8811 4468 8809 4468 8799
      4472 8799 4475 8795 4475 8788 4471 8792
      4463 8793 4468 8780 4475 8775 4474 8740
      4464 8734 4454 8741 4442 8745 4436 8753
TIME...MOT...LOC 2050Z 272DEG 50KT 4469 8795 4456 8790 4443 8800 

$$

WIC009-029-061-112130-
/O.CON.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Brown WI-Kewaunee WI-Door WI-
350 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR NORTHEASTERN BROWN...KEWAUNEE AND SOUTHERN DOOR COUNTIES...

At 350 PM CDT, severe thunderstorms were located along a line
extending from 8 miles northwest of Bay Shore Park to near Green Bay
to near Bellevue Town, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Green Bay, Kewaunee, Bay Shore Park, Algoma, Luxemburg, Bellevue
Town, De Pere, Howard, Ashwaubenon and Bellevue.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4438 8804 4456 8811 4468 8809 4468 8799
      4472 8799 4475 8795 4475 8788 4471 8792
      4463 8793 4468 8780 4475 8775 4474 8740
      4464 8734 4454 8741 4442 8745 4436 8753
TIME...MOT...LOC 2050Z 272DEG 50KT 4469 8795 4456 8790 4443 8800 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kieckbusch

310 
WWUS53 KGRB 112057
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
357 PM CDT Wed Aug 11 2021

WIC009-029-061-112130-
/O.CON.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Brown WI-Kewaunee WI-Door WI-
357 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR NORTHEASTERN BROWN...KEWAUNEE AND SOUTHERN DOOR COUNTIES...

At 357 PM CDT, severe thunderstorms were located along a line
extending from near Bay Shore Park to near Luxemburg to near Bellevue
Town, moving east at 60 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...
Green Bay, Kewaunee, Bay Shore Park, Algoma, Luxemburg, Bellevue
Town, Little Suamico, Humboldt, Brussels and Casco.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4438 8786 4451 8797 4468 8802 4468 8799
      4472 8799 4475 8795 4475 8788 4471 8792
      4463 8793 4468 8780 4475 8775 4474 8740
      4464 8734 4454 8741 4442 8745 4436 8753
TIME...MOT...LOC 2057Z 270DEG 52KT 4469 8781 4456 8776 4443 8786 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kieckbusch

705 
WWUS53 KGRB 112105
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
405 PM CDT Wed Aug 11 2021

WIC009-112115-
/O.CAN.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Brown WI-
405 PM CDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BROWN COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

LAT...LON 4437 8777 4465 8776 4462 8786 4454 8792
      4454 8797 4465 8801 4467 8800 4466 8798
      4471 8799 4475 8795 4475 8788 4471 8792
      4463 8793 4468 8780 4475 8775 4474 8740
      4464 8734 4442 8745 4436 8753
TIME...MOT...LOC 2105Z 271DEG 56KT 4469 8764 4456 8759 4443 8769 

$$

WIC029-061-112130-
/O.CON.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Kewaunee WI-Door WI-
405 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR KEWAUNEE AND SOUTHERN DOOR COUNTIES...

At 405 PM CDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Bay Shore Park to near Luxemburg
to 8 miles northeast of Denmark, moving east at 65 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...
Kewaunee, Bay Shore Park, Algoma, Luxemburg, Little Suamico,
Brussels, Casco, Birchwood, Forestville and Lincoln.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4437 8777 4465 8776 4462 8786 4454 8792
      4454 8797 4465 8801 4467 8800 4466 8798
      4471 8799 4475 8795 4475 8788 4471 8792
      4463 8793 4468 8780 4475 8775 4474 8740
      4464 8734 4442 8745 4436 8753
TIME...MOT...LOC 2105Z 271DEG 56KT 4469 8764 4456 8759 4443 8769 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kieckbusch

572 
WWUS53 KGRB 112111
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
411 PM CDT Wed Aug 11 2021

WIC029-061-112130-
/O.CON.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Kewaunee WI-Door WI-
411 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR KEWAUNEE AND SOUTHERN DOOR COUNTIES...

At 410 PM CDT, severe thunderstorms were located along a line
extending from 11 miles southwest of Sturgeon Bay to near Algoma to
near Kewaunee, moving east at 65 mph.

HAZARD...70 mph wind gusts and quarter 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.

Locations impacted include...
Kewaunee, Bay Shore Park, Algoma, Luxemburg, Little Suamico, Casco,
Birchwood, Forestville, Lincoln and Krok.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4442 8767 4465 8776 4462 8786 4461 8787
      4458 8791 4465 8801 4467 8800 4466 8798
      4471 8799 4475 8795 4475 8788 4471 8792
      4463 8793 4471 8770 4474 8740 4464 8734
      4454 8741 4442 8745 4436 8753
TIME...MOT...LOC 2110Z 270DEG 55KT 4469 8750 4456 8745 4443 8755 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Kieckbusch

565 
WWUS53 KGRB 112121
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
421 PM CDT Wed Aug 11 2021

WIC029-061-112131-
/O.EXP.KGRB.SV.W.0083.000000T0000Z-210811T2130Z/
Kewaunee WI-Door WI-
421 PM CDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR KEWAUNEE AND SOUTHERN DOOR
COUNTIES WILL EXPIRE AT 430 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 800 PM CDT for northeastern
Wisconsin.

LAT...LON 4442 8767 4465 8776 4462 8786 4461 8787
      4458 8791 4465 8801 4467 8800 4466 8798
      4471 8799 4475 8795 4475 8788 4471 8792
      4463 8793 4471 8770 4474 8740 4464 8734
      4454 8741 4442 8745 4436 8753
TIME...MOT...LOC 2121Z 271DEG 46KT 4469 8735 4456 8730 4443 8740 

$$

Kieckbusch

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 7:00 PM CDT	Special Marine Warning	GRB		60 min
Aug 10, 7:06 PM CDT	Special Marine Warning	GRB		54 min
Aug 10, 7:11 PM CDT	Flash Flood Warning	GRB	Brown	3 hr
Aug 10, 7:20 PM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	55 min
Aug 10, 7:30 PM CDT	Special Weather Statement	GRB	Door, Marinette	60 min
Aug 10, 7:49 PM CDT	Special Marine Warning	GRB		86 min
Aug 10, 7:52 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Kewaunee, Manitowoc	38 min
Aug 10, 7:54 PM CDT	Tornado Warning	GRB	Marinette	25 min
Aug 10, 10:05 PM CDT	Areal Flood Advisory	GRB	Brown	70 min
Aug 11, 3:11 AM CDT	Small Craft Advisory	GRB		19 hr
Aug 11, 11:25 AM CDT	Special Weather Statement	GRB	Oneida	65 min
Aug 11, 11:54 AM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Portage, Wood	51 min
Aug 11, 12:18 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Marathon	42 min
Aug 11, 12:30 PM CDT	Special Weather Statement	GRB	Marathon	45 min
Aug 11, 12:38 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	52 min
Aug 11, 12:42 PM CDT	Special Weather Statement	GRB	Florence, Forest	33 min
Aug 11, 12:53 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest, Marinette	37 min
Aug 11, 12:57 PM CDT	Tornado Warning	GRB	Langlade, Lincoln, Marathon	33 min
Aug 11, 1:04 PM CDT	Tornado Warning	GRB	Marathon	41 min
Aug 11, 1:14 PM CDT	Special Weather Statement	GRB	Shawano	46 min
Aug 11, 1:20 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon, Menominee, Shawano	40 min
Aug 11, 1:24 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Menominee, Portage, Shawano, Waupaca	51 min
Aug 11, 1:31 PM CDT	Severe Thunderstorm Warning	GRB	Oconto, Shawano, Waupaca	44 min
Aug 11, 1:40 PM CDT	Tornado Warning	GRB	Marathon	20 min
Aug 11, 1:54 PM CDT	Areal Flood Advisory	GRB	Marathon, Menominee, Shawano	3 hr
Aug 11, 1:54 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Wood	51 min
Aug 11, 2:07 PM CDT	Tornado Warning	GRB	Brown, Oconto, Shawano	23 min
Aug 11, 2:09 PM CDT	Tornado Warning Tornado observed	GRB	Marathon	51 min
Aug 11, 2:16 PM CDT	Flash Flood Warning	GRB	Marathon	5 hr
Aug 11, 2:25 PM CDT	Special Marine Warning	GRB		65 min
Aug 11, 2:27 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto	35 min
Aug 11, 2:37 PM CDT	Areal Flood Advisory	GRB	Marinette, Oconto	2 hr
Aug 11, 2:46 PM CDT	Special Marine Warning	GRB		59 min
Aug 11, 2:47 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	43 min
Aug 11, 2:47 PM CDT	Tornado Warning	GRB	Marathon	43 min
Aug 11, 2:51 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Door, Kewaunee	39 min
Aug 11, 2:55 PM CDT	Areal Flood Advisory	GRB	Door	2 hr
Aug 11, 2:58 PM CDT	Special Weather Statement	GRB	Waupaca	47 min
Aug 11, 3:07 PM CDT	Flash Flood Warning	GRB	Marathon	4 hr
Aug 11, 3:08 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Shawano, Waupaca	38 min
Aug 11, 3:11 PM CDT	Special Marine Warning	GRB		64 min
Aug 11, 3:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	GRB	Waushara	18 min
Aug 11, 3:33 PM CDT	Special Marine Warning	GRB		57 min
Aug 11, 3:51 PM CDT	Special Weather Statement	GRB	Outagamie, Winnebago	39 min
Aug 11, 4:05 PM CDT	Special Marine Warning	GRB		55 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.