Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 48, NWS Green Bay, WI

July 26, 20216 counties in Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 26, 2021, 11:11 PM CDT for 6 counties in Wisconsin. It was in force for 49 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 26, 2021, 11:11 PM CDT (04:11 UTC)
Expired: Jul 27, 2021, 12:00 AM CDT
In force: 49 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Florence County, WI, Forest County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Oneida County, WI

The radar

The Green Bay radar (KGRB), 123 km from the middle of the area, began a volume at 04:14 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 26, 11:27 PM CDT	TSTM WND GST 70	W Antigo, WI	TRAINED SPOTTER MEASURED THIS WIND GUST JUST WEST OF ANTIGO.
Jul 26, 11:28 PM CDT	TSTM WND DMG	2 Se Hogarty, WI	TREES AND POWER LINES DOWN. TIME ESTIMATED BY RADAR.
Jul 26, 11:28 PM CDT	NON-TSTM WND DMG	Antigo, WI	TREES AND POWER LINES DOWN. TIME ESTIMATED BY RADAR.
Jul 26, 11:32 PM CDT	TSTM WND GST 58	Wausau, WI	MEASURED AT WAUSAU DOWNTOWN AIRPORT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.2 hours before the alert went out and 125 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: 591 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2073 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted.

368 
WUUS53 KGRB 270411
SVRGRB
WIC037-041-067-069-073-085-270500-
/O.NEW.KGRB.SV.W.0048.210727T0411Z-210727T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
1111 PM CDT Mon Jul 26 2021

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Forest County in northeastern Wisconsin...
  Southern Lincoln County in north central Wisconsin...
  Southwestern Florence County in northeastern Wisconsin...
  Eastern Marathon County in central Wisconsin...
  Eastern Oneida County in north central Wisconsin...
  Langlade County in north central Wisconsin...

* Until midnight CDT.

* At 1111 PM CDT, severe thunderstorms were located along a line
  extending from near Crandon to 7 miles northeast of Parrish to near
  Dutch Corners to 14 miles south of New Wood Wildlife Area, moving
  southeast at 45 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Law enforcement.

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

* Severe thunderstorms will be near...
  Crandon around 1115 PM CDT.
  North Otter Creek Natural Area around 1120 PM CDT.
  Veterans Memorial County Park and Woodlawn around 1125 PM CDT.
  Pearson and Ma Ka Ja Wan Scout Reservation around 1130 PM CDT.

Other locations in the path of these severe thunderstorms include
Wausau, Antigo, Rib Mountain, Carter, Weston, Mosinee, White Lake and
McCaslin Mountain Natural Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across north-central Wisconsin. SEEK SHELTER NOW inside a
sturdy structure and 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 4512 9005 4518 9005 4526 8964 4552 8938
      4586 8924 4586 8918 4590 8918 4573 8840
      4572 8842 4538 8843 4538 8868 4521 8868
      4520 8864 4512 8864 4512 8898 4503 8899
      4503 8922 4478 8923 4472 8952 4512 9020
TIME...MOT...LOC 0411Z 304DEG 41KT 4559 8898 4546 8927 4521 8953 4511
9004

HAIL...0.75IN
WIND...60MPH
 
$$

Kurimski

2 follow-up statements

455 
WWUS53 KGRB 270436
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
1136 PM CDT Mon Jul 26 2021

WIC037-069-085-270445-
/O.CAN.KGRB.SV.W.0048.000000T0000Z-210727T0500Z/
Lincoln WI-Florence WI-Oneida WI-
1136 PM CDT Mon Jul 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN LINCOLN...
SOUTHWESTERN FLORENCE AND EASTERN ONEIDA COUNTIES IS CANCELLED...

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

LAT...LON 4512 9020 4512 8943 4539 8934 4547 8904
      4586 8905 4579 8869 4572 8866 4572 8842
      4538 8843 4538 8868 4521 8868 4520 8864
      4512 8864 4512 8898 4503 8899 4503 8922
      4478 8923 4472 8952
TIME...MOT...LOC 0435Z 308DEG 42KT 4556 8849 4522 8899 4491 8929 4494
8981

$$

WIC041-067-073-270500-
/O.CON.KGRB.SV.W.0048.000000T0000Z-210727T0500Z/
Forest WI-Marathon WI-Langlade WI-
1136 PM CDT Mon Jul 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR FOREST...EASTERN MARATHON AND LANGLADE COUNTIES...

At 1135 PM CDT, severe thunderstorms were located along a line
extending from 8 miles southwest of Goodman to 9 miles southeast of
Veterans Memorial County Park to 8 miles northwest of Wittenberg to 6
miles west of Rib Mountain, moving southeast at 50 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Law enforcement.

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

Locations impacted include...
  White Lake, Weston, Gardner Dam Scout Camp and Bevent.

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.

This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across northern Wisconsin. SEEK SHELTER NOW inside a
sturdy structure and 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 4512 9020 4512 8943 4539 8934 4547 8904
      4586 8905 4579 8869 4572 8866 4572 8842
      4538 8843 4538 8868 4521 8868 4520 8864
      4512 8864 4512 8898 4503 8899 4503 8922
      4478 8923 4472 8952
TIME...MOT...LOC 0435Z 308DEG 42KT 4556 8849 4522 8899 4491 8929 4494
8981

HAIL...0.75IN
WIND...60MPH
 
$$

Kurimski

499 
WWUS53 KGRB 270455
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
1155 PM CDT Mon Jul 26 2021

WIC041-067-073-270504-
/O.EXP.KGRB.SV.W.0048.000000T0000Z-210727T0500Z/
Forest WI-Marathon WI-Langlade WI-
1155 PM CDT Mon Jul 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR FOREST...EASTERN MARATHON AND
LANGLADE COUNTIES WILL EXPIRE AT MIDNIGHT CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with these thunderstorms.

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

LAT...LON 4512 9020 4512 8943 4539 8934 4547 8904
      4586 8905 4579 8869 4572 8866 4572 8842
      4538 8843 4538 8868 4521 8868 4520 8864
      4512 8864 4512 8898 4503 8899 4503 8922
      4478 8923 4472 8952
TIME...MOT...LOC 0454Z 304DEG 41KT 4544 8823 4510 8873 4479 8904 4482
8955

$$

Kurimski

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 8:26 PM CDT	Special Weather Statement	GRB	Door	49 min
Jul 26, 8:33 PM CDT	Special Marine Warning	GRB		36 min
Jul 26, 9:43 PM CDT	Special Weather Statement	GRB	Vilas	62 min
Jul 26, 10:30 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Vilas	50 min
Jul 26, 10:37 PM CDT	Special Weather Statement	GRB	Langlade, Lincoln	53 min
Jul 26, 10:45 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	45 min
Jul 26, 11:06 PM CDT	Severe Thunderstorm Warning	GRB	Florence	54 min
Jul 26, 11:33 PM CDT	Severe Thunderstorm Warning	GRB	Marinette, Menominee, Oconto, Shawano	57 min
Jul 26, 11:39 PM CDT	Special Weather Statement	GRB	Marinette	36 min
Jul 26, 11:58 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Outagamie, Portage, Waupaca	62 min
Jul 27, 12:16 AM CDT	Special Marine Warning	GRB		89 min
Jul 27, 12:24 AM CDT	Severe Thunderstorm Warning	GRB	Brown, Marinette, Oconto, Shawano	66 min
Jul 27, 12:37 AM CDT	Special Marine Warning	GRB		83 min
Jul 27, 12:51 AM CDT	Severe Thunderstorm Warning	GRB	Door, Kewaunee	54 min
Jul 27, 12:52 AM CDT	Special Weather Statement	GRB	Calumet, Winnebago	38 min
Jul 27, 12:55 AM CDT	Special Weather Statement	GRB	Manitowoc	35 min
Jul 27, 1:18 AM CDT	Special Weather Statement	GRB	Oneida	42 min
Jul 27, 1:28 AM CDT	Severe Thunderstorm Warning	GRB	Oneida	32 min
Jul 27, 1:42 AM CDT	Special Weather Statement	GRB	Manitowoc	48 min
Jul 27, 1:53 AM CDT	Special Weather Statement	GRB	Lincoln	52 min
Jul 27, 2:30 AM CDT	Special Weather Statement	GRB	Langlade	45 min
Jul 27, 2:41 AM CDT	Special Weather Statement	GRB	Langlade, Lincoln, Marathon, Menominee, Shawano	49 min
Jul 27, 3:20 AM CDT	Special Weather Statement	GRB	Brown, Marathon, Menominee, Outagamie, Portage, Shawano and 2 more	40 min
Jul 27, 3:51 AM CDT	Special Weather Statement	GRB	Brown, Calumet, Kewaunee, Manitowoc, Marathon, Outagamie and 6 more	69 min
Jul 27, 6:16 AM CDT	Special Weather Statement	GRB	Portage, Wood	44 min
Jul 27, 6:58 AM CDT	Special Weather Statement	GRB	Portage, Wood	47 min
Jul 27, 7:27 AM CDT	Special Weather Statement	GRB	Waushara	63 min
Jul 27, 8:33 AM CDT	Special Weather Statement	GRB	Calumet, Manitowoc, Portage, Waushara, Winnebago, Wood	57 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.