Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 16, NWS Green Bay, WI

June 8, 2021Forest County, Vilas County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jun 8, 2021, 5:14 PM CDT for Forest County, Vilas County, Wisconsin. It was in force for 31 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
Jun 8, 2021, 5:14 PM CDT (22:14 UTC)
Expired
Jun 8, 2021, 5:45 PM CDT
In force
31 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Forest County, WI, Vilas County, WI

The radar

The Marquette radar (KMQT), 120 km from the middle of the area, began a volume at 22:18 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.

What was reported inside it

TimeReportWhereRemark
Jun 8, 5:28 PM CDTTSTM WND DMG3 Se Phelps, WICOUPLE TREES DOWN. TIME ESTIMATED VIA RADAR
Jun 8, 5:28 PM CDTTSTM WND DMG3 Se Phelps, WICOUPLE TREES DOWN. TIME ESTIMATED VIA RADAR.

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, 10.2 hours before the alert went out and 184 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2021-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 610 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2021-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
610 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
1171 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

756 
WUUS53 KGRB 082214
SVRGRB
WIC041-125-082245-
/O.NEW.KGRB.SV.W.0016.210608T2214Z-210608T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
514 PM CDT Tue Jun 8 2021

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Northwestern Forest County in northeastern Wisconsin...
  East central Vilas County in north central Wisconsin...

* Until 545 PM CDT.

* At 514 PM CDT, a severe thunderstorm was located near Kentuck Lake
  Campground, or 15 miles west of Iron River, moving south at 5 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Kentuck Lake Campground.

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 4604 8886 4602 8882 4594 8888 4601 8909
      4611 8902
TIME...MOT...LOC 2214Z 016DEG 6KT 4606 8895 

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

Uhlmann
3 follow-up statements
141 
WWUS53 KGRB 082228
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
528 PM CDT Tue Jun 8 2021

WIC041-125-082245-
/O.CON.KGRB.SV.W.0016.000000T0000Z-210608T2245Z/
Forest WI-Vilas WI-
528 PM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTHWESTERN FOREST AND EAST CENTRAL VILAS COUNTIES...

At 527 PM CDT, a severe thunderstorm was located near Kentuck Lake 
Campground, or 15 miles west of Iron River, moving south at 5 mph. 
This is a slow moving storm, likely producing heavy rainfall.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Kentuck Lake Campground.

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 4604 8886 4602 8882 4594 8888 4601 8909
      4611 8902
TIME...MOT...LOC 2227Z 016DEG 6KT 4604 8896 

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

Uhlmann
249 
WWUS53 KGRB 082236
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
536 PM CDT Tue Jun 8 2021

WIC041-082245-
/O.CAN.KGRB.SV.W.0016.000000T0000Z-210608T2245Z/
Forest WI-
536 PM CDT Tue Jun 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN FOREST COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

LAT...LON 4607 8893 4604 8893 4598 8897 4598 8901
      4601 8909 4611 8902
TIME...MOT...LOC 2235Z 016DEG 6KT 4603 8897 

$$

WIC125-082245-
/O.CON.KGRB.SV.W.0016.000000T0000Z-210608T2245Z/
Vilas WI-
536 PM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR EAST CENTRAL VILAS COUNTY...

At 535 PM CDT, a severe thunderstorm was located over Kentuck Lake
Campground, or 15 miles northeast of Eagle River, moving south at 5
mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Kentuck Lake Campground.

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 4607 8893 4604 8893 4598 8897 4598 8901
      4601 8909 4611 8902
TIME...MOT...LOC 2235Z 016DEG 6KT 4603 8897 

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

Uhlmann
371 
WWUS53 KGRB 082241
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
541 PM CDT Tue Jun 8 2021

WIC125-082251-
/O.EXP.KGRB.SV.W.0016.000000T0000Z-210608T2245Z/
Vilas WI-
541 PM CDT Tue Jun 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL VILAS COUNTY WILL
EXPIRE AT 545 PM 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.

LAT...LON 4607 8893 4604 8893 4598 8897 4598 8901
      4601 8909 4611 8902
TIME...MOT...LOC 2241Z 016DEG 6KT 4603 8897 

$$

Uhlmann

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 8:17 PM CDTMarine Dense Fog AdvisoryGRB49 hr
Jun 8, 1:17 PM CDTSpecial Weather StatementGRBCalumet43 min
Jun 8, 4:57 PM CDTSpecial Weather StatementGRBFlorence48 min
Jun 8, 5:54 PM CDTSpecial Weather StatementGRBForest51 min
Jun 8, 5:57 PM CDTSpecial Weather StatementGRBFlorence63 min
Jun 8, 6:38 PM CDTSevere Thunderstorm WarningGRBMarinette37 min
Jun 8, 6:47 PM CDTSevere Thunderstorm WarningGRBLanglade, Oneida43 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2021Every 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.