Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 7, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at May 2, 2021, 5:51 PM CDT for Waupaca County, Waushara County, Wisconsin. It was in force for 23 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
- May 2, 2021, 5:51 PM CDT (22:51 UTC)
- Expired
- May 2, 2021, 6:14 PM CDT
- In force
- 23 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Waupaca County, WI, Waushara County, WI
The radar
The Green Bay radar (KGRB), 98 km from the middle of the area, began a volume at 22:53 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, 10.9 hours before the alert went out and 98 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
- 1571 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 312 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
320
WUUS53 KGRB 022251
SVRGRB
WIC135-137-022330-
/O.NEW.KGRB.SV.W.0007.210502T2251Z-210502T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
551 PM CDT Sun May 2 2021
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Northern Waushara County in central Wisconsin...
Southwestern Waupaca County in northeastern Wisconsin...
* Until 630 PM CDT.
* At 550 PM CDT, a severe thunderstorm was located near Plainfield,
or 9 miles northwest of Wautoma, moving east at 25 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Napowan Scout Camp, Pine River, Saxeville, Wild Rose, Poy Sippi and
Lind Center.
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 4414 8946 4423 8948 4424 8936 4424 8923
4426 8922 4429 8900 4410 8897
TIME...MOT...LOC 2250Z 265DEG 16KT 4418 8941
HAIL...1.00IN
WIND...<50MPH
$$
Uhlmann2 follow-up statements
518
WWUS53 KGRB 022304
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
604 PM CDT Sun May 2 2021
WIC135-137-022330-
/O.CON.KGRB.SV.W.0007.000000T0000Z-210502T2330Z/
Waushara WI-Waupaca WI-
604 PM CDT Sun May 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHEASTERN WAUSHARA AND SOUTHWESTERN WAUPACA COUNTIES...
At 604 PM CDT, a severe thunderstorm was located 8 miles north of
Wautoma, moving east at 20 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Napowan Scout Camp, Pine River, Saxeville, Wild Rose, Poy Sippi and
Lind Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4415 8935 4424 8937 4424 8923 4426 8922
4429 8900 4410 8897
TIME...MOT...LOC 2304Z 265DEG 16KT 4419 8932
HAIL...1.00IN
WIND...<50MPH
$$
Uhlmann762
WWUS53 KGRB 022314
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
614 PM CDT Sun May 2 2021
WIC135-137-022323-
/O.CAN.KGRB.SV.W.0007.000000T0000Z-210502T2330Z/
Waushara WI-Waupaca WI-
614 PM CDT Sun May 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WAUSHARA AND
SOUTHWESTERN WAUPACA COUNTIES IS CANCELLED...
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 has been cancelled.
LAT...LON 4415 8935 4424 8937 4424 8923 4426 8922
4429 8900 4410 8897
TIME...MOT...LOC 2311Z 265DEG 16KT 4419 8926
$$
UhlmannThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 8:21 PM CDT | Small Craft Advisory | GRB | 5 hr | |
| May 2, 10:30 AM CDT | Small Craft Advisory | GRB | 29 hr | |
| May 2, 4:18 PM CDT | Special Weather Statement | GRB | Waushara | 42 min |
| May 2, 4:35 PM CDT | Special Weather Statement | GRB | Waupaca | 40 min |
| May 2, 4:45 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Waupaca | 60 min |
| May 2, 5:13 PM CDT | Special Weather Statement | GRB | Calumet | 32 min |
| May 2, 5:18 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Manitowoc, Outagamie, Waupaca, Winnebago | 26 min |
| May 2, 5:39 PM CDT | Special Weather Statement | GRB | Waushara | 51 min |
| May 2, 5:53 PM CDT | Special Weather Statement | GRB | Brown, Calumet | 52 min |
| May 2, 6:03 PM CDT | Special Weather Statement | GRB | Manitowoc | 42 min |
| May 2, 6:44 PM CDT | Special Weather Statement | GRB | Calumet, Winnebago | 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.