Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 6, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at May 2, 2021, 5:18 PM CDT for 6 counties in Wisconsin. It was in force for 26 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, 5:18 PM CDT (22:18 UTC)
- Expired
- May 2, 2021, 5:44 PM CDT
- In force
- 26 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Brown County, WI, Calumet County, WI, Manitowoc County, WI, Outagamie County, WI, Waupaca County, WI, Winnebago County, WI
The radar
The Green Bay radar (KGRB), 37 km from the middle of the area, began a volume at 22:17 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, 10.3 hours before the alert went out and 36 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.
203
WUUS53 KGRB 022218
SVRGRB
WIC009-015-071-087-135-139-022315-
/O.NEW.KGRB.SV.W.0006.210502T2218Z-210502T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
518 PM CDT Sun May 2 2021
The National Weather Service in Green Bay has issued a
* Severe Thunderstorm Warning for...
Southern Brown County in northeastern Wisconsin...
Northern Calumet County in east central Wisconsin...
Northern Winnebago County in east central Wisconsin...
Southeastern Waupaca County in northeastern Wisconsin...
Southern Outagamie County in northeastern Wisconsin...
Northwestern Manitowoc County in east central Wisconsin...
* Until 615 PM CDT.
* At 518 PM CDT, a severe thunderstorm was located near Fremont, or
17 miles southeast of Waupaca. Another severe thunderstorm was
located near Combined Locks. The severe thunderstorms were 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...
Appleton, Menasha, Kaukauna, Little Chute, New London, Kimberly,
Brillion, Denmark, Fremont and Darboy.
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 4418 8888 4437 8885 4438 8777 4418 8781
TIME...MOT...LOC 2217Z 266DEG 18KT 4425 8876
HAIL...1.00IN
WIND...60MPH
$$
Eckberg2 follow-up statements
364
WWUS53 KGRB 022244
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
544 PM CDT Sun May 2 2021
WIC135-022253-
/O.CAN.KGRB.SV.W.0006.000000T0000Z-210502T2315Z/
Waupaca WI-
544 PM CDT Sun May 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAUPACA COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4418 8861 4437 8859 4438 8777 4418 8781
TIME...MOT...LOC 2243Z 266DEG 18KT 4426 8858
$$
WIC009-015-071-087-139-022315-
/O.CON.KGRB.SV.W.0006.000000T0000Z-210502T2315Z/
Brown WI-Calumet WI-Winnebago WI-Outagamie WI-Manitowoc WI-
544 PM CDT Sun May 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHERN BROWN...NORTHERN CALUMET...NORTHEASTERN WINNEBAGO...
SOUTHEASTERN OUTAGAMIE AND NORTHWESTERN MANITOWOC COUNTIES...
At 543 PM CDT, a severe thunderstorm was located 7 miles west of
Menasha, or 9 miles west of Appleton, moving east at 20 mph.
HAZARD...Quarter size hail. Hail up to nickel size has been reported
by spotters on this storm.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Appleton, Menasha, Kaukauna, Little Chute, Kimberly, Brillion,
Denmark, Darboy, Northern Lake Winnebago and Neenah.
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 4418 8861 4437 8859 4438 8777 4418 8781
TIME...MOT...LOC 2243Z 266DEG 18KT 4426 8858
HAIL...1.00IN
WIND...<50MPH
$$
Uhlmann741
WWUS53 KGRB 022244 RRA
SVSGRB
Severe Weather Statement
National Weather Service Green Bay WI
544 PM CDT Sun May 2 2021
WIC009-015-071-087-139-022254-
/O.CAN.KGRB.SV.W.0006.000000T0000Z-210502T2315Z/
Brown WI-Calumet WI-Winnebago WI-Outagamie WI-Manitowoc WI-
544 PM CDT Sun May 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BROWN...NORTHERN
CALUMET...NORTHEASTERN WINNEBAGO...SOUTHEASTERN OUTAGAMIE AND
NORTHWESTERN MANITOWOC COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4418 8861 4437 8859 4438 8777 4418 8781
TIME...MOT...LOC 2241Z 266DEG 18KT 4426 8857
$$
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, 5:39 PM CDT | Special Weather Statement | GRB | Waushara | 51 min |
| May 2, 5:51 PM CDT | Severe Thunderstorm Warning | GRB | Waupaca, Waushara | 23 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.