Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 68, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Aug 10, 2021, 6:41 PM CDT for Marinette County, Oconto County, Wisconsin. It was in force for 49 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
- Aug 10, 2021, 6:41 PM CDT (23:41 UTC)
- Expired
- Aug 10, 2021, 7:30 PM CDT
- In force
- 49 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Marinette County, WI, Oconto County, WI
The radar
The Green Bay radar (KGRB), 66 km from the middle of the area, began a volume at 23:42 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 12:00Z, 11.7 hours before the alert went out and 68 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.
- Mixed-layer CAPE
- 32 J/kg
- Mixed-layer CIN
- -550 J/kg
- Mixed-layer LCL
- 828 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
781
WUUS53 KGRB 102341
SVRGRB
WIC075-083-110030-
/O.NEW.KGRB.SV.W.0068.210810T2341Z-210811T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
641 PM CDT Tue Aug 10 2021
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Southern Marinette County in northeastern Wisconsin...
Southern Oconto County in northeastern Wisconsin...
* Until 730 PM CDT.
* At 641 PM CDT, a severe thunderstorm was located 8 miles north of
Oconto, or 15 miles west of Marinette, moving east at 25 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 be near...
Oconto around 645 PM CDT.
Other locations in the path of this severe thunderstorm include
Marinette.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4511 8754 4506 8752 4494 8759 4490 8755
4493 8747 4486 8751 4484 8767 4490 8757
4494 8760 4493 8771 4490 8777 4482 8781
4479 8810 4507 8810 4512 8768 4510 8760
4510 8759 4513 8761 4513 8751 4516 8738
TIME...MOT...LOC 2341Z 265DEG 24KT 4500 8792
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kieckbusch3 follow-up statements
449
WWUS53 KGRB 102352
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
652 PM CDT Tue Aug 10 2021
WIC075-083-110030-
/O.CON.KGRB.SV.W.0068.000000T0000Z-210811T0030Z/
Marinette WI-Oconto WI-
652 PM CDT Tue Aug 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHERN MARINETTE AND SOUTHERN OCONTO COUNTIES...
At 652 PM CDT, a severe thunderstorm was located 7 miles north of
Oconto, or 12 miles southwest of Marinette, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Marinette, Menominee, Oconto, Peshtigo, Coleman, Harmony, Cullen and
County Line.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4511 8754 4506 8752 4494 8759 4490 8755
4493 8747 4486 8751 4484 8767 4485 8766
4490 8757 4494 8760 4494 8769 4490 8777
4482 8781 4481 8799 4506 8806 4512 8770
4510 8759 4513 8761 4512 8753 4516 8739
TIME...MOT...LOC 2352Z 263DEG 17KT 4501 8786
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kieckbusch696
WWUS53 KGRB 110010
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
710 PM CDT Tue Aug 10 2021
WIC075-083-110030-
/O.CON.KGRB.SV.W.0068.000000T0000Z-210811T0030Z/
Marinette WI-Oconto WI-
710 PM CDT Tue Aug 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHERN MARINETTE AND SOUTHERN OCONTO COUNTIES...
At 710 PM CDT, a severe thunderstorm was located near Oconto, or 11
miles southwest of Marinette, moving east at 20 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.
Locations impacted include...
Marinette, Menominee, Oconto, Peshtigo, Harmony, Cullen and County
Line.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Green Bay.
&&
LAT...LON 4511 8754 4506 8752 4494 8759 4490 8755
4493 8747 4486 8751 4484 8767 4490 8757
4494 8760 4493 8772 4486 8782 4487 8794
4507 8796 4512 8771 4510 8759 4513 8761
4512 8752 4516 8740
TIME...MOT...LOC 0010Z 270DEG 17KT 4497 8780
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Kieckbusch630
WWUS53 KGRB 110021
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
721 PM CDT Tue Aug 10 2021
WIC075-083-110031-
/O.EXP.KGRB.SV.W.0068.000000T0000Z-210811T0030Z/
Marinette WI-Oconto WI-
721 PM CDT Tue Aug 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MARINETTE AND
SOUTHERN OCONTO COUNTIES WILL EXPIRE AT 730 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
LAT...LON 4511 8754 4506 8752 4494 8759 4490 8755
4493 8747 4486 8751 4484 8767 4490 8757
4494 8760 4493 8772 4486 8782 4487 8794
4507 8796 4512 8771 4510 8759 4513 8761
4512 8752 4516 8740
TIME...MOT...LOC 0021Z 265DEG 24KT 4498 8770
$$
KieckbuschThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:08 PM CDT | Marine Dense Fog Advisory | GRB | 13 hr | |
| Aug 10, 1:36 AM CDT | Dense Fog Advisory | GRB | Florence, Forest, Langlade, Lincoln, Marinette, Menominee and 3 more | 6 hr |
| Aug 10, 12:18 PM CDT | Special Weather Statement | GRB | Vilas | 42 min |
| Aug 10, 12:48 PM CDT | Special Weather Statement | GRB | Vilas | 42 min |
| Aug 10, 1:07 PM CDT | Special Weather Statement | GRB | Vilas | 38 min |
| Aug 10, 5:16 PM CDT | Special Weather Statement | GRB | Outagamie | 29 min |
| Aug 10, 5:46 PM CDT | Special Weather Statement | GRB | Outagamie | 44 min |
| Aug 10, 5:46 PM CDT | Special Weather Statement | GRB | Outagamie | 44 min |
| Aug 10, 6:00 PM CDT | Tornado Warning | GRB | Outagamie, Shawano | 30 min |
| Aug 10, 6:29 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Outagamie | 46 min |
| Aug 10, 6:32 PM CDT | Special Marine Warning | GRB | 43 min | |
| Aug 10, 6:52 PM CDT | Areal Flood Advisory | GRB | Brown, Kewaunee, Outagamie | 3 hr |
| Aug 10, 6:59 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee | 46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.