Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 40, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Jul 14, 2021, 4:09 PM CDT for Door County, Kewaunee County, Manitowoc County, Wisconsin. It was in force for 40 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
- Jul 14, 2021, 4:09 PM CDT (21:09 UTC)
- Expired
- Jul 14, 2021, 4:49 PM CDT
- In force
- 40 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Door County, WI, Kewaunee County, WI, Manitowoc County, WI
The radar
The Green Bay radar (KGRB), 49 km from the middle of the area, began a volume at 21:12 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 |
|---|---|---|---|
| Jul 14, 4:10 PM CDT | TSTM WND DMG | 2 Nnw Manitowoc, WI | SEVERAL TREES DOWN IN THE NORTHWEST PORTION OF MANITOWOC AND POINTS TO THE NORTHWEST IN MANITOWOC COUNTY. |
| Jul 14, 4:10 PM CDT | TSTM WND GST 41 | Manitowoc, WI |
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, 9.2 hours before the alert went out and 47 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
- 579 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1045 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
313
WUUS53 KGRB 142109
SVRGRB
WIC029-061-071-142200-
/O.NEW.KGRB.SV.W.0040.210714T2109Z-210714T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
409 PM CDT Wed Jul 14 2021
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Kewaunee County in northeastern Wisconsin...
Southern Door County in northeastern Wisconsin...
Eastern Manitowoc County in east central Wisconsin...
* Until 500 PM CDT.
* At 409 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Oconto to near Valders, moving
east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Manitowoc, Sturgeon Bay, Kewaunee, Algoma, Luxemburg, Two Creeks,
Two Rivers, Newton, Mishicot and Larrabee.
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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4394 8777 4436 8770 4470 8777 4484 8721
4481 8721 4475 8727 4451 8742 4433 8748
4418 8746 4407 8760 4393 8767
TIME...MOT...LOC 2109Z 269DEG 42KT 4497 8781 4407 8781
HAIL...<.75IN
WIND...60MPH
$$
EB4 follow-up statements
086
WWUS53 KGRB 142116
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
416 PM CDT Wed Jul 14 2021
WIC029-061-071-142200-
/O.CON.KGRB.SV.W.0040.000000T0000Z-210714T2200Z/
Kewaunee WI-Door WI-Manitowoc WI-
416 PM CDT Wed Jul 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR KEWAUNEE...SOUTHERN DOOR AND EASTERN MANITOWOC COUNTIES...
At 414 PM CDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Oconto to near Manitowoc, moving
east at 50 mph.
Some tree branches were reported down in the Green Bay metro area
around 4 pm.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Manitowoc, Sturgeon Bay, Kewaunee, Algoma, Luxemburg, Two Creeks, Two
Rivers, Newton, Mishicot and Larrabee.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4394 8777 4436 8770 4470 8777 4484 8721
4481 8721 4475 8727 4451 8742 4433 8748
4418 8746 4407 8760 4393 8767
TIME...MOT...LOC 2114Z 269DEG 42KT 4497 8773 4407 8773
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
EB968
WWUS53 KGRB 142129
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
429 PM CDT Wed Jul 14 2021
WIC029-061-071-142200-
/O.CON.KGRB.SV.W.0040.000000T0000Z-210714T2200Z/
Kewaunee WI-Door WI-Manitowoc WI-
429 PM CDT Wed Jul 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR EASTERN KEWAUNEE...SOUTH CENTRAL DOOR AND NORTHEASTERN MANITOWOC
COUNTIES...
At 429 PM CDT, severe thunderstorms were located along a line
extending from 8 miles southwest of Egg Harbor to 13 miles east of
Manitowoc, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Sturgeon Bay, Kewaunee, Algoma, Two Creeks, Two Rivers, Brussels,
Forestville, Clay Banks, Kewaunee Power Station and Point Beach State
Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for damaging winds. People outside should move
to a shelter, inside a strong building and away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4412 8761 4442 8753 4473 8766 4484 8721
4481 8721 4475 8727 4453 8742 4432 8748
4418 8746 4411 8755
TIME...MOT...LOC 2129Z 273DEG 26KT 4496 8742 4406 8742
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
EB422
WWUS53 KGRB 142141
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
441 PM CDT Wed Jul 14 2021
WIC071-142149-
/O.CAN.KGRB.SV.W.0040.000000T0000Z-210714T2200Z/
Manitowoc WI-
441 PM CDT Wed Jul 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MANITOWOC COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area.Therefore, the warning has been cancelled.
LAT...LON 4475 8727 4453 8742 4448 8744 4476 8755
4484 8721 4481 8721
TIME...MOT...LOC 2139Z 269DEG 42KT 4496 8727 4406 8727
$$
WIC029-061-142200-
/O.CON.KGRB.SV.W.0040.000000T0000Z-210714T2200Z/
Kewaunee WI-Door WI-
441 PM CDT Wed Jul 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR NORTHEASTERN KEWAUNEE AND SOUTH CENTRAL DOOR COUNTIES...
At 439 PM CDT, severe thunderstorms were located along a line
extending from near Jacksonport to 20 miles east of Manitowoc,
moving east at 50 mph. A few trees were reported down in eastern
Manitowoc County by Emergency Management
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Sturgeon Bay, Algoma, Forestville, Clay Banks, Vignes, Maplewood,
Kodan 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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4475 8727 4453 8742 4448 8744 4476 8755
4484 8721 4481 8721
TIME...MOT...LOC 2139Z 269DEG 42KT 4496 8727 4406 8727
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
EB210
WWUS53 KGRB 142149
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
449 PM CDT Wed Jul 14 2021
WIC029-061-142157-
/O.CAN.KGRB.SV.W.0040.000000T0000Z-210714T2200Z/
Kewaunee WI-Door WI-
449 PM CDT Wed Jul 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KEWAUNEE AND
SOUTH CENTRAL DOOR COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.
However, wind gusts to 45 mph and heavy rain are still possible with
these thunderstorms as they move northeast across Central and
northern Door County.
LAT...LON 4475 8727 4453 8742 4448 8744 4476 8755
4484 8721 4481 8721
TIME...MOT...LOC 2145Z 269DEG 42KT 4496 8716 4406 8716
$$
EBThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 12:59 PM CDT | Special Weather Statement | GRB | Marathon, Portage, Waushara, Wood | 76 min |
| Jul 14, 1:49 PM CDT | Special Weather Statement | GRB | Oneida | 41 min |
| Jul 14, 2:33 PM CDT | Special Weather Statement | GRB | Oneida | 27 min |
| Jul 14, 2:44 PM CDT | Areal Flood Advisory | GRB | Oneida | 3 hr |
| Jul 14, 3:01 PM CDT | Special Weather Statement | GRB | Forest | 44 min |
| Jul 14, 3:13 PM CDT | Special Weather Statement | GRB | Brown, Outagamie | 47 min |
| Jul 14, 3:40 PM CDT | Special Weather Statement | GRB | Brown, Calumet | 35 min |
| Jul 14, 3:48 PM CDT | Special Marine Warning | GRB | 57 min | |
| Jul 14, 4:00 PM CDT | Special Weather Statement | GRB | Brown, Kewaunee, Manitowoc | 30 min |
| Jul 14, 4:41 PM CDT | Special Marine Warning | GRB | 64 min | |
| Jul 14, 4:44 PM CDT | Special Weather Statement | GRB | Door | 61 min |
| Jul 14, 5:40 PM CDT | Special Weather Statement | GRB | Winnebago | 65 min |
| Jul 14, 6:21 PM CDT | Special Weather Statement | GRB | Calumet, Winnebago | 54 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.