Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS Green Bay, WI

August 11, 2021Portage County, Wood County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Aug 11, 2021, 1:54 PM CDT for Portage County, Wood County, Wisconsin. It was in force for 51 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, 1:54 PM CDT (18:54 UTC)
Expired: Aug 11, 2021, 2:45 PM CDT
In force: 51 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Portage County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 129 km from the middle of the area, began a volume at 18:58 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, 1:55 PM CDT	TSTM WND DMG	2 W Rudolph, WI	TREE DOWN AT INTERSECTION OF HWY C AND HWY S. TIME ESTIMATED BY RADAR.
Aug 11, 1:56 PM CDT	TSTM WND DMG	Plover, WI	COUPLE REPORTS OF TREES DOWN SOUTH OF STEVENS POINT/PLOVER AREA.
Aug 11, 2:06 PM CDT	TSTM WND DMG	1 Se Vesper, WI	TREE DOWN ON RUESS ROAD NEAR VESPER. TIME ESTIMATED BY RADAR.
Aug 11, 2:34 PM CDT	TSTM WND DMG	Junction City, WI	FACEBOOK REPORT WITH PHOTOS OF TREE DAMAGE AND A GARAGE DOOR BLOWN IN ON NORTH SIDE OF JUNCTION CITY. TIME ESTIMATED BY RADAR - SEVERAL STORMS IMPACTED THE AREA DURING THE DAY.

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, 6.9 hours before the alert went out and 130 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.

183 
WUUS53 KGRB 111854
SVRGRB
WIC097-141-111945-
/O.NEW.KGRB.SV.W.0077.210811T1854Z-210811T1945Z/

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

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Southeastern Wood County in central Wisconsin...
  Central Portage County in central Wisconsin...

* Until 245 PM CDT.

* At 154 PM CDT, a severe thunderstorm was located near Pittsville,
  or 9 miles northwest of Wisconsin Rapids, moving east 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.

* This severe thunderstorm will be near...
  Wisconsin Rapids around 205 PM CDT.
  Whiting around 230 PM CDT.
  Stevens Point around 235 PM CDT.

Other locations impacted by this severe thunderstorm include Park
Ridge, Coddington, Walker, Dexterville, Meehan, Rudolph, Arpin, Port
Edwards, Kellner and Junction City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter such as an interior room, a
bathroom, closet or basement.

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

&&

LAT...LON 4424 8963 4433 9009 4450 9017 4462 8975
      4465 8947 4424 8939
TIME...MOT...LOC 1854Z 250DEG 32KT 4445 9000 

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

$$

Kieckbusch

4 follow-up statements

226 
WWUS53 KGRB 111906
SVSGRB

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

WIC097-141-111945-
/O.CON.KGRB.SV.W.0077.000000T0000Z-210811T1945Z/
Wood WI-Portage WI-
206 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR SOUTHEASTERN WOOD AND CENTRAL PORTAGE COUNTIES...

At 206 PM CDT, a severe thunderstorm was located near Wisconsin 
Rapids, moving east at 40 mph. Gusts to 51 mph and dime size hail 
was reported near Plover.

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 storm will be near...
  Lake Wazeecha around 210 PM CDT.
  Stevens Point and Whiting around 230 PM CDT.

Other locations impacted by this severe thunderstorm include Park
Ridge, Coddington, Walker, Dexterville, Meehan, Rudolph, Arpin, Port
Edwards, Kellner and Junction City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter, such as an interior room,
a bathroom or closet or basement.

&&

LAT...LON 4424 8963 4433 9009 4450 9017 4462 8975
      4465 8947 4424 8939
TIME...MOT...LOC 1906Z 267DEG 34KT 4444 8984 

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

$$

Kieckbusch

897 
WWUS53 KGRB 111919
SVSGRB

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

WIC097-141-111945-
/O.CON.KGRB.SV.W.0077.000000T0000Z-210811T1945Z/
Wood WI-Portage WI-
219 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR EAST CENTRAL WOOD AND CENTRAL PORTAGE COUNTIES...

At 218 PM CDT, a severe thunderstorm was located near Whiting, or 7
miles southwest of Stevens Point, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe storm will be near...
  Whiting around 230 PM CDT.
  Stevens Point around 235 PM CDT.

Other locations impacted by this severe thunderstorm include Park
Ridge, Coddington, Meehan, Rudolph, Arpin, Kellner, Junction City,
Keene, Almond and Bancroft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Green Bay.

&&

LAT...LON 4432 8972 4438 8995 4450 9017 4462 8975
      4465 8947 4424 8939
TIME...MOT...LOC 1918Z 250DEG 32KT 4448 8969 

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

$$

Kieckbusch

667 
WWUS53 KGRB 111933
SVSGRB

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

WIC141-111943-
/O.CAN.KGRB.SV.W.0077.000000T0000Z-210811T1945Z/
Wood WI-
233 PM CDT Wed Aug 11 2021

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

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

LAT...LON 4448 8973 4451 8973 4451 8982 4452 8984
      4459 8984 4462 8975 4465 8947 4446 8943
      4445 8965
TIME...MOT...LOC 1933Z 250DEG 32KT 4453 8951 

$$

WIC097-111945-
/O.CON.KGRB.SV.W.0077.000000T0000Z-210811T1945Z/
Portage WI-
233 PM CDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR NORTHWESTERN PORTAGE COUNTY...

At 233 PM CDT, a severe thunderstorm was located over Stevens Point,
moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Stevens Point, Whiting, Plover, Stockton, Jordan, Park Ridge and
Junction City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Green Bay.

&&

LAT...LON 4448 8973 4451 8973 4451 8982 4452 8984
      4459 8984 4462 8975 4465 8947 4446 8943
      4445 8965
TIME...MOT...LOC 1933Z 250DEG 32KT 4453 8951 

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

$$

Kieckbusch

483 
WWUS53 KGRB 111941
SVSGRB

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

WIC097-111951-
/O.EXP.KGRB.SV.W.0077.000000T0000Z-210811T1945Z/
Portage WI-
241 PM CDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PORTAGE COUNTY
WILL EXPIRE AT 245 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

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

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Green Bay.

LAT...LON 4448 8973 4451 8973 4451 8982 4452 8984
      4459 8984 4462 8975 4465 8947 4446 8943
      4445 8965
TIME...MOT...LOC 1941Z 250DEG 32KT 4455 8942 

$$

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, 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, 3:30 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Door, Kewaunee, Oconto, Outagamie, Shawano	60 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.