Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 86, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Aug 24, 2021, 11:35 AM CDT for Waushara County, Winnebago County, Wisconsin. It was in force for 25 min. 1 report 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
- Aug 24, 2021, 11:35 AM CDT (16:35 UTC)
- Expired
- Aug 24, 2021, 12:00 PM CDT
- In force
- 25 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Waushara County, WI, Winnebago County, WI
The radar
The Green Bay radar (KGRB), 81 km from the middle of the area, began a volume at 16:38 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 |
|---|---|---|---|
| Aug 24, 11:40 AM CDT | HAIL 0.25 | 3 N Eureka, WI | WIND GUSTS AROUND 20 TO 25 MPH |
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, 4.6 hours before the alert went out and 80 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
- 58 J/kg
- Mixed-layer CIN
- -344 J/kg
- Mixed-layer LCL
- 1387 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
602
WUUS53 KGRB 241635
SVRGRB
WIC137-139-241700-
/O.NEW.KGRB.SV.W.0086.210824T1635Z-210824T1700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
1135 AM CDT Tue Aug 24 2021
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Western Winnebago County in east central Wisconsin...
Southeastern Waushara County in central Wisconsin...
* Until noon CDT.
* At 1134 AM CDT, a severe thunderstorm was located near Berlin,
moving east at 25 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near...
Oshkosh around 1200 PM CDT.
Other locations impacted by this severe thunderstorm include Pickett,
Butte Des Morts, Highland Shore, Lake Butte Des Morts, Rivermoor,
Auroraville, Borth, Winneconne, Harbor Springs and Clarks Point.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4391 8888 4398 8889 4398 8902 4411 8907
4419 8865 4390 8858
TIME...MOT...LOC 1634Z 256DEG 23KT 4402 8891
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
Kieckbusch3 follow-up statements
921
WWUS53 KGRB 241644
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1144 AM CDT Tue Aug 24 2021
WIC137-139-241700-
/O.CON.KGRB.SV.W.0086.000000T0000Z-210824T1700Z/
Winnebago WI-Waushara WI-
1144 AM CDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR
WESTERN WINNEBAGO AND SOUTHEASTERN WAUSHARA COUNTIES...
At 1142 AM CDT, a severe thunderstorm was located 3 miles
northwest of Eureka, moving east at 25 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Oshkosh around 1215 PM CDT.
Other locations impacted by this severe thunderstorm include Pickett,
Butte Des Morts, Highland Shore, Lake Butte Des Morts, Rivermoor,
Borth, Winneconne, Harbor Springs, Clarks Point and Ring.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Green Bay.
If on or near Lake Butte Des Morts, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
Torrential rainfall is occurring with this storm, and may lead to
urban flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4391 8888 4398 8889 4401 8894 4413 8899
4419 8865 4390 8858
TIME...MOT...LOC 1642Z 250DEG 20KT 4404 8886
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
Kieckbusch330
WWUS53 KGRB 241651
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1151 AM CDT Tue Aug 24 2021
WIC137-241659-
/O.CAN.KGRB.SV.W.0086.000000T0000Z-210824T1700Z/
Waushara WI-
1151 AM CDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAUSHARA COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4391 8888 4396 8889 4399 8889 4402 8888
4408 8889 4411 8888 4412 8864 4390 8858
TIME...MOT...LOC 1649Z 264DEG 20KT 4403 8881
$$
WIC139-241700-
/O.CON.KGRB.SV.W.0086.000000T0000Z-210824T1700Z/
Winnebago WI-
1151 AM CDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR
SOUTHWESTERN WINNEBAGO COUNTY...
At 1149 AM CDT, a severe thunderstorm was located 8 miles north of
Rush Lake, or near Eureka, moving east at 25 mph. Pea size hail was
reported north of Eureka at 1140 am.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Oshkosh around 1215 PM CDT.
Other locations impacted by this severe thunderstorm include Pickett,
Butte Des Morts, Highland Shore, Lake Butte Des Morts, Rivermoor,
Winneconne, Harbor Springs, Ring, Waukau and Fisk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Green Bay.
If on or near Lake Butte Des Morts, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
Torrential rainfall is occurring with this storm, and may lead to
urban flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4391 8888 4396 8889 4399 8889 4402 8888
4408 8889 4411 8888 4412 8864 4390 8858
TIME...MOT...LOC 1649Z 264DEG 20KT 4403 8881
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
Kieckbusch464
WWUS53 KGRB 241658
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
1158 AM CDT Tue Aug 24 2021
WIC139-241706-
/O.EXP.KGRB.SV.W.0086.000000T0000Z-210824T1700Z/
Winnebago WI-
1158 AM CDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WINNEBAGO COUNTY
WILL EXPIRE AT NOON 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 small hail
and heavy rain are still expected with this thunderstorm.
If severe weather occurred in your area, contact your nearest law
enforcement agency. They will relay your report to the National
Weather Service Green Bay.
LAT...LON 4391 8888 4396 8889 4399 8889 4402 8888
4408 8889 4411 8888 4412 8864 4390 8858
TIME...MOT...LOC 1656Z 256DEG 23KT 4404 8875
$$
KieckbuschThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 7:23 AM CDT | Special Weather Statement | GRB | Wood | 52 min |
| Aug 24, 7:44 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Wood | 76 min |
| Aug 24, 8:27 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 63 min |
| Aug 24, 9:02 AM CDT | Special Weather Statement | GRB | Langlade, Menominee, Shawano, Waupaca | 58 min |
| Aug 24, 9:24 AM CDT | Special Weather Statement | GRB | Portage | 51 min |
| Aug 24, 9:37 AM CDT | Special Weather Statement | GRB | Portage | 38 min |
| Aug 24, 9:45 AM CDT | Special Weather Statement | GRB | Waushara | 60 min |
| Aug 24, 9:55 AM CDT | Special Weather Statement | GRB | Portage, Waushara, Winnebago | 50 min |
| Aug 24, 9:58 AM CDT | Special Weather Statement | GRB | Wood | 47 min |
| Aug 24, 10:28 AM CDT | Special Weather Statement | GRB | Marathon, Portage, Wood | 47 min |
| Aug 24, 10:30 AM CDT | Special Weather Statement | GRB | Outagamie, Waupaca, Waushara, Winnebago | 60 min |
| Aug 24, 11:24 AM CDT | Special Weather Statement | GRB | Menominee, Portage, Shawano, Waupaca | 51 min |
| Aug 24, 11:28 AM CDT | Special Weather Statement | GRB | Brown, Calumet, Manitowoc, Outagamie, Waushara, Winnebago | 62 min |
| Aug 24, 11:53 AM CDT | Special Marine Warning | GRB | 2 hr | |
| Aug 24, 12:05 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee, Manitowoc | 25 min |
| Aug 24, 12:23 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 37 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.