Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 14, NWS Green Bay, WI

May 31, 2021Lincoln County, Oneida County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at May 31, 2021, 5:00 PM CDT for Lincoln County, Oneida County, Wisconsin. It was in force for 45 min. 2 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: May 31, 2021, 5:00 PM CDT (22:00 UTC)
Expired: May 31, 2021, 5:45 PM CDT
In force: 45 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Lincoln County, WI, Oneida County, WI

The radar

The Green Bay radar (KGRB), 170 km from the middle of the area, began a volume at 22:03 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
May 31, 5:32 PM CDT	HAIL 0.25	8 N Tomahawk, WI	FEW MINUTES OF SMALL HAIL
May 31, 5:32 PM CDT	HAIL 0.25	8 N Tomahawk, WI	FEW MINUTES OF SMALL HAIL.

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 12:00Z, 10.0 hours before the alert went out and 172 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1526 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

408 
WUUS53 KGRB 312200
SVRGRB
WIC069-085-312245-
/O.NEW.KGRB.SV.W.0014.210531T2200Z-210531T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
500 PM CDT Mon May 31 2021

The National Weather Service in Green Bay has issued a

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

* Until 545 PM CDT.

* At 500 PM CDT, a severe thunderstorm was located near Willow Lake,
  or 26 miles southeast of Park Falls, moving east at 35 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Tripoli around 510 PM CDT.
  Willow Reservoir around 515 PM CDT.

Other locations in the path of this severe thunderstorm include
Tomahawk, Woodboro, Rhinelander and Harrison.

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 4576 9004 4570 8935 4547 8939 4547 8942
      4532 8942 4542 9004
TIME...MOT...LOC 2200Z 290DEG 31KT 4566 9006 

HAIL...1.00IN
WIND...<50MPH
 
$$

Bersch

3 follow-up statements

393 
WWUS53 KGRB 312212
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
512 PM CDT Mon May 31 2021

WIC069-085-312245-
/O.CON.KGRB.SV.W.0014.000000T0000Z-210531T2245Z/
Lincoln WI-Oneida WI-
512 PM CDT Mon May 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTHERN LINCOLN AND SOUTHWESTERN ONEIDA COUNTIES...

At 511 PM CDT, a severe thunderstorm was located near Tripoli, or 23 
miles west of Rhinelander, moving east at 35 mph. Another storm was 
located just northeast of Harrison.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Willow Reservoir around 515 PM CDT.

Other locations in the path of this severe thunderstorm include
Tomahawk, Woodboro, Rhinelander and Harrison.

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 4576 9004 4570 8935 4547 8939 4547 8942
      4532 8942 4542 9004
TIME...MOT...LOC 2211Z 290DEG 31KT 4562 8992 

HAIL...1.00IN
WIND...<50MPH
 
$$

Bersch

500 
WWUS53 KGRB 312228
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
528 PM CDT Mon May 31 2021

WIC069-085-312245-
/O.CON.KGRB.SV.W.0014.000000T0000Z-210531T2245Z/
Lincoln WI-Oneida WI-
528 PM CDT Mon May 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTHERN LINCOLN AND CENTRAL ONEIDA COUNTIES...

At 527 PM CDT, severe thunderstorms were located along a line
extending from near Willow Reservoir to 6 miles northwest of 
Tomahawk to 8 miles southeast of Tripoli, moving east at 25 mph. 
Other storms were located west of Harrison and Jeffris.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
  Tomahawk, Gilbert, Newbold, Woodboro, Rhinelander and Harrison.

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 4570 8935 4547 8939 4547 8942 4532 8942
      4542 9004 4575 8989
TIME...MOT...LOC 2227Z 287DEG 24KT 4567 8978 4554 8984 4544 8992 

HAIL...1.00IN
WIND...<50MPH
 
$$

Bersch

136 
WWUS53 KGRB 312243
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
543 PM CDT Mon May 31 2021

WIC069-085-312253-
/O.EXP.KGRB.SV.W.0014.000000T0000Z-210531T2245Z/
Lincoln WI-Oneida WI-
543 PM CDT Mon May 31 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LINCOLN AND CENTRAL
ONEIDA COUNTIES WILL EXPIRE AT 545 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However hail up 
to penny sized and heavy rain are 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 4570 8935 4547 8939 4547 8942 4532 8942
      4542 9004 4575 8989
TIME...MOT...LOC 2243Z 290DEG 31KT 4562 8960 4549 8966 4539 8974 

$$

Bersch

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 12:20 PM CDT	Special Weather Statement	GRB	Florence	85 min
May 31, 1:38 PM CDT	Special Weather Statement	GRB	Vilas	67 min
May 31, 2:11 PM CDT	Special Weather Statement	GRB	Oneida	64 min
May 31, 3:03 PM CDT	Special Weather Statement	GRB	Forest	57 min
May 31, 3:27 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Oneida	48 min
May 31, 3:39 PM CDT	Special Weather Statement	GRB	Lincoln	66 min
May 31, 3:57 PM CDT	Special Weather Statement	GRB	Vilas	63 min
May 31, 4:12 PM CDT	Special Weather Statement	GRB	Forest, Langlade, Marinette	63 min
May 31, 4:21 PM CDT	Special Weather Statement	GRB	Lincoln	54 min
May 31, 5:07 PM CDT	Special Weather Statement	GRB	Langlade, Marinette, Menominee	53 min
May 31, 5:22 PM CDT	Special Weather Statement	GRB	Marinette	38 min
May 31, 5:29 PM CDT	Special Marine Warning	GRB		61 min
May 31, 5:35 PM CDT	Special Weather Statement	GRB	Door	55 min
May 31, 5:42 PM CDT	Special Weather Statement	GRB	Lincoln	63 min
May 31, 5:58 PM CDT	Special Weather Statement	GRB	Kewaunee, Menominee, Oconto, Shawano	62 min
May 31, 6:07 PM CDT	Special Weather Statement	GRB	Marathon	38 min
May 31, 6:10 PM CDT	Special Weather Statement	GRB	Wood	50 min
May 31, 6:19 PM CDT	Special Marine Warning	GRB		41 min
May 31, 6:32 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	43 min
May 31, 6:43 PM CDT	Special Marine Warning	GRB		92 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.