Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 53, NWS Green Bay, WI

July 27, 2021Oneida County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 27, 2021, 1:28 AM CDT for Oneida County, Wisconsin. It was in force for 32 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 27, 2021, 1:28 AM CDT (06:28 UTC)
Expired: Jul 27, 2021, 2:00 AM CDT
In force: 32 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Oneida County, WI

The radar

The Green Bay radar (KGRB), 186 km from the middle of the area, began a volume at 06:28 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 6.5 hours before the alert went out and 188 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.

643 
WUUS53 KGRB 270628
SVRGRB
WIC085-270700-
/O.NEW.KGRB.SV.W.0053.210727T0628Z-210727T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
128 AM CDT Tue Jul 27 2021

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Southwestern Oneida County in north central Wisconsin...

* Until 200 AM CDT.

* At 128 AM CDT, a severe thunderstorm was located near Willow
  Reservoir, or 24 miles west of Rhinelander, moving southeast at 40
  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 remain over mainly rural areas of
  southwestern Oneida County, including the following locations...
  Gobler Lake Natural Area, Tomahawk River Pines Natural Area, Lower
  Tomahawk River Natural Area, Goodnow, Harshaw and Mccord.

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.

&&

LAT...LON 4585 9004 4573 8957 4558 8956 4555 8961
      4555 8975 4556 9004
TIME...MOT...LOC 0628Z 295DEG 33KT 4570 8992 

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

Bersch

3 follow-up statements

593 
WWUS53 KGRB 270638
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
138 AM CDT Tue Jul 27 2021

WIC085-270700-
/O.CON.KGRB.SV.W.0053.000000T0000Z-210727T0700Z/
Oneida WI-
138 AM CDT Tue Jul 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR SOUTHWESTERN ONEIDA COUNTY...

At 138 AM CDT, a severe thunderstorm was located near Willow
Reservoir, or 20 miles west of Rhinelander, moving southeast 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 remain over mainly rural areas of
southwestern Oneida County, including the following locations...
Gobler Lake Natural Area, Lower Tomahawk River Natural Area, Goodnow,
Harshaw and Mccord.

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.

&&

LAT...LON 4577 9004 4573 8957 4558 8956 4555 8961
      4555 8975 4556 9004
TIME...MOT...LOC 0638Z 304DEG 29KT 4564 8986 

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

Bersch

189 
WWUS53 KGRB 270650
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
150 AM CDT Tue Jul 27 2021

WIC085-270700-
/O.CON.KGRB.SV.W.0053.000000T0000Z-210727T0700Z/
Oneida WI-
150 AM CDT Tue Jul 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR SOUTHWESTERN ONEIDA COUNTY...

At 149 AM CDT, a severe thunderstorm was located 8 miles north of
Tomahawk, or 15 miles west of Rhinelander, moving southeast at 30
mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Willow Lake, Willow Reservoir, Lower Tomahawk River Natural Area,
Goodnow, Harshaw, Gobler Lake Natural Area and Mccord.

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.

&&

LAT...LON 4577 9004 4573 8957 4558 8956 4555 8961
      4555 8975 4556 9004
TIME...MOT...LOC 0649Z 306DEG 28KT 4559 8974 

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

Bersch

122 
WWUS53 KGRB 270655
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
155 AM CDT Tue Jul 27 2021

WIC085-270705-
/O.EXP.KGRB.SV.W.0053.000000T0000Z-210727T0700Z/
Oneida WI-
155 AM CDT Tue Jul 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ONEIDA COUNTY
WILL EXPIRE AT 200 AM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

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

LAT...LON 4577 9004 4573 8957 4558 8956 4555 8961
      4555 8975 4556 9004
TIME...MOT...LOC 0655Z 295DEG 33KT 4557 8969 

$$

Bersch

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, 11:11 PM CDT	Severe Thunderstorm Warning	GRB	Florence, Forest, Langlade, Lincoln, Marathon, Oneida	49 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, 1:42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.