Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 43, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Jul 26, 2021, 4:32 PM CDT for Door County, Wisconsin. It was in force for 43 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 26, 2021, 4:32 PM CDT (21:32 UTC)
- Expired
- Jul 26, 2021, 5:15 PM CDT
- In force
- 43 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 70.0 mph
County Door County, WI
The radar
The Green Bay radar (KGRB), 55 km from the middle of the area, began a volume at 21:31 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, 9.5 hours before the alert went out and 56 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2259 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
226
WUUS53 KGRB 262132
SVRGRB
WIC029-262215-
/O.NEW.KGRB.SV.W.0043.210726T2132Z-210726T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
432 PM CDT Mon Jul 26 2021
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Southern Door County in northeastern Wisconsin...
* Until 515 PM CDT.
* At 431 PM CDT, a severe thunderstorm was located 10 miles east of
Oconto, or 12 miles south of Marinette, moving southeast at 20 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Sturgeon Bay, Brussels, Forestville, Clay Banks, Vignes, Maplewood,
Potawatomi State Park, Rosiere, Kolberg and Carnot.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
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 4468 8732 4467 8738 4467 8762 4475 8775
4480 8770 4485 8778 4481 8785 4488 8778
4481 8770 4488 8762 4494 8764 4494 8766
4493 8771 4492 8775 4501 8762 4490 8758
4493 8747 4481 8722
TIME...MOT...LOC 2131Z 311DEG 19KT 4491 8765
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
$$
Skowronski3 follow-up statements
435
WWUS53 KGRB 262146
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
446 PM CDT Mon Jul 26 2021
WIC029-262215-
/O.CON.KGRB.SV.W.0043.000000T0000Z-210726T2215Z/
Door WI-
446 PM CDT Mon Jul 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR SOUTHERN DOOR COUNTY...
At 446 PM CDT, a severe thunderstorm was located 9 miles west of
Sturgeon Bay, moving southeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Sturgeon Bay, Brussels, Forestville, Clay Banks, Vignes, Maplewood,
Potawatomi State Park, Rosiere, Kolberg and Carnot.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4468 8732 4467 8738 4467 8763 4475 8775
4480 8770 4485 8778 4481 8785 4488 8778
4487 8777 4485 8777 4481 8770 4488 8762
4493 8747 4481 8722
TIME...MOT...LOC 2146Z 311DEG 19KT 4486 8756
HAIL...1.00IN
WIND...60MPH
$$
Skowronski344
WWUS53 KGRB 262158
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
458 PM CDT Mon Jul 26 2021
WIC029-262215-
/O.CON.KGRB.SV.W.0043.000000T0000Z-210726T2215Z/
Door WI-
458 PM CDT Mon Jul 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR SOUTHERN DOOR COUNTY...
At 457 PM CDT, a severe thunderstorm was located near Sturgeon Bay,
moving southeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Sturgeon Bay, Brussels, Forestville, Clay Banks, Vignes, Maplewood,
Potawatomi State Park, Kolberg, Carnot and Namur.
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 4477 8726 4468 8732 4467 8738 4468 8764
4473 8772 4479 8768 4487 8758 4490 8744
4479 8723
TIME...MOT...LOC 2157Z 311DEG 19KT 4482 8749
HAIL...1.50IN
WIND...60MPH
$$
Skowronski871
WWUS53 KGRB 262210
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
510 PM CDT Mon Jul 26 2021
WIC029-262215-
/O.CON.KGRB.SV.W.0043.000000T0000Z-210726T2215Z/
Door WI-
510 PM CDT Mon Jul 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR SOUTHERN DOOR COUNTY...
At 509 PM CDT, a severe thunderstorm was located 11 miles southwest
of Sturgeon Bay, moving southeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Brussels, Forestville, Clay Banks, Vignes, Maplewood, Kolberg and
Carnot.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4477 8726 4468 8732 4467 8738 4468 8764
4473 8767 4478 8765 4481 8759 4480 8745
4475 8729
TIME...MOT...LOC 2209Z 297DEG 21KT 4476 8758
HAIL...1.00IN
WIND...60MPH
$$
SkowronskiThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 2:39 PM CDT | Special Weather Statement | GRB | Portage | 36 min |
| Jul 26, 2:49 PM CDT | Special Weather Statement | GRB | Marinette | 26 min |
| Jul 26, 3:08 PM CDT | Special Weather Statement | GRB | Waupaca | 37 min |
| Jul 26, 3:21 PM CDT | Special Weather Statement | GRB | Marinette | 24 min |
| Jul 26, 3:28 PM CDT | Special Weather Statement | GRB | Brown | 32 min |
| Jul 26, 3:42 PM CDT | Special Weather Statement | GRB | Outagamie | 33 min |
| Jul 26, 3:45 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 45 min |
| Jul 26, 3:46 PM CDT | Special Marine Warning | GRB | 59 min | |
| Jul 26, 4:01 PM CDT | Special Weather Statement | GRB | Brown | 44 min |
| Jul 26, 4:08 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 36 min |
| Jul 26, 4:10 PM CDT | Special Marine Warning | GRB | 65 min | |
| Jul 26, 4:19 PM CDT | Special Weather Statement | GRB | Brown | 41 min |
| Jul 26, 4:34 PM CDT | Special Weather Statement | GRB | Kewaunee | 56 min |
| Jul 26, 4:54 PM CDT | Special Marine Warning | GRB | 2 hr | |
| Jul 26, 4:58 PM CDT | Severe Thunderstorm Warning | GRB | Kewaunee | 32 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.