Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 60, NWS Green Bay, WI

July 28, 2021Wood County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 28, 2021, 10:18 PM CDT for Wood County, Wisconsin. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 28, 2021, 10:18 PM CDT (03:18 UTC)
Expired: Jul 28, 2021, 11:01 PM CDT
In force: 43 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Wood County, WI

The radar

The La Crosse radar (KARX), 121 km from the middle of the area, began a volume at 03:18 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.

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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.3 hours before the alert went out and 152 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: 593 J/kg
Mixed-layer CIN: -264 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

028 
WUUS53 KGRB 290318
SVRGRB
WIC141-290415-
/O.NEW.KGRB.SV.W.0060.210729T0318Z-210729T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
1018 PM CDT Wed Jul 28 2021

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Wood County in central Wisconsin...

* Until 1115 PM CDT.

* At 1017 PM CDT, severe thunderstorms were located along a line
  extending from 6 miles west of Marshfield to 7 miles south of
  Shortville, moving southeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Pittsville and Babcock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
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 4469 9031 4468 8985 4451 8984 4451 8973
      4425 8973 4425 9032
TIME...MOT...LOC 0317Z 334DEG 39KT 4465 9030 4440 9055 

HAIL...<.75IN
WIND...60MPH
 
$$

Kurimski

3 follow-up statements

033 
WWUS53 KGRB 290334
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
1034 PM CDT Wed Jul 28 2021

WIC141-290415-
/O.CON.KGRB.SV.W.0060.000000T0000Z-210729T0415Z/
Wood WI-
1034 PM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR WOOD COUNTY...

At 1034 PM CDT, severe thunderstorms were located along a line
extending from near Pittsville to 10 miles east of Millston, moving
southeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Wisconsin Rapids, Marshfield, Pittsville, Babcock, Lake Wazeecha,
Nekoosa, Port Edwards, Biron, Hewitt and Sherry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4469 9031 4468 8985 4451 8984 4451 8973
      4425 8973 4425 9032
TIME...MOT...LOC 0334Z 334DEG 39KT 4449 9019 4424 9044 

HAIL...<.75IN
WIND...60MPH
 
$$

Kurimski

646 
WWUS53 KGRB 290349
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
1049 PM CDT Wed Jul 28 2021

WIC141-290415-
/O.CON.KGRB.SV.W.0060.000000T0000Z-210729T0415Z/
Wood WI-
1049 PM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR WOOD COUNTY...

At 1048 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Babcock to 11 miles northwest of
Necedah, moving southeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe thunderstorms will remain over mainly rural areas of
Wood County, including the following locations... Milladore, Sandhill
Wildlife Area, Sherry, Walker, Dexterville, Blenker, Rudolph, Arpin,
Port Edwards and Powers Bluff County Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4434 9032 4468 8993 4468 8985 4451 8984
      4451 8973 4425 8973 4425 9032
TIME...MOT...LOC 0348Z 324DEG 44KT 4435 9003 4410 9028 

HAIL...<.75IN
WIND...60MPH
 
$$

Kurimski

752 
WWUS53 KGRB 290401
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
1101 PM CDT Wed Jul 28 2021

WIC141-290411-
/O.CAN.KGRB.SV.W.0060.000000T0000Z-210729T0415Z/
Wood WI-
1101 PM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR WOOD COUNTY IS CANCELLED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.  However heavy rain is still possible with these
thunderstorms.

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

LAT...LON 4434 9032 4468 8993 4468 8985 4451 8984
      4451 8973 4425 8973 4425 9032
TIME...MOT...LOC 0359Z 334DEG 39KT 4423 8995 4398 9020 

$$

Kurimski

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 7:04 PM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Vilas	41 min
Jul 28, 7:36 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon	39 min
Jul 28, 7:36 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	39 min
Jul 28, 7:52 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln	53 min
Jul 28, 8:20 PM CDT	Special Weather Statement	GRB	Shawano	40 min
Jul 28, 8:37 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon, Shawano	53 min
Jul 28, 8:58 PM CDT	Tornado Warning	GRB	Marathon	32 min
Jul 28, 9:05 PM CDT	Areal Flood Advisory	GRB	Langlade, Lincoln, Marathon, Shawano	3 hr
Jul 28, 9:21 PM CDT	Tornado Warning	GRB	Marathon, Portage	24 min
Jul 28, 9:22 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Shawano, Waupaca	53 min
Jul 28, 9:54 PM CDT	Tornado Warning	GRB	Portage, Waupaca	36 min
Jul 28, 10:10 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago	65 min
Jul 28, 10:35 PM CDT	Areal Flood Advisory	GRB	Marathon, Outagamie, Portage, Shawano, Waupaca, Waushara and 1 more	3 hr
Jul 28, 11:12 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca, Waushara, Winnebago	45 min
Jul 28, 11:38 PM CDT	Tornado Warning	GRB	Winnebago	16 min
Jul 29, 3:42 AM CDT	Small Craft Advisory	GRB		23 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.