Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 99, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Sep 4, 2012, 7:40 PM CDT for 5 counties in Wisconsin. It was in force for 39 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
- Sep 4, 2012, 7:40 PM CDT (00:40 UTC)
- Expired
- Sep 4, 2012, 8:19 PM CDT
- In force
- 39 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Marathon County, WI, Portage County, WI, Shawano County, WI, 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 00:43 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 4, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.7 hours before the alert went out and 99 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
- 2450 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 825 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.5
The text
As transmitted, in the capitals the NWS used until 2016.
620
WUUS53 KGRB 050040
SVRGRB
WIC073-097-115-135-137-050130-
/O.NEW.KGRB.SV.W.0099.120905T0040Z-120905T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
740 PM CDT TUE SEP 4 2012
THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN MARATHON COUNTY IN CENTRAL WISCONSIN...
PORTAGE COUNTY IN CENTRAL WISCONSIN...
WESTERN SHAWANO COUNTY IN NORTHEAST WISCONSIN...
WAUPACA COUNTY IN NORTHEAST WISCONSIN...
NORTHERN WAUSHARA COUNTY IN CENTRAL WISCONSIN...
* UNTIL 830 PM CDT
* AT 738 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST OF
WESTON TO PLAINFIELD...AND MOVING EAST AT 30 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
PLAINFIELD AND BEVENT AROUND 745 PM CDT.
AMHERST AROUND 805 PM CDT.
WITTENBERG AROUND 810 PM CDT.
HARTMAN CREEK STATE PARK AROUND 815 PM CDT.
WAUPACA AROUND 830 PM CDT.
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE NORTH
STAR...POLONIA...PIKE LAKE...KEENE...HATLEY...ELLIS...ARNOTT...
CUSTER...STANDING ROCK PARK AND FANCHER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.
THESE STORMS HAVE EXHIBITED SOME EMBEDDED ROTATION. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.
&&
LAT...LON 4410 8960 4424 8961 4425 8973 4444 8973
4459 8971 4489 8979 4499 8977 4502 8928
4497 8898 4494 8898 4494 8882 4424 8887
4424 8889 4409 8889
TIME...MOT...LOC 0040Z 270DEG 24KT 4502 8936 4425 8954
WIND...HAIL 70MPH 1.00IN
$$
EB3 follow-up statements
038
WWUS53 KGRB 050051
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
751 PM CDT TUE SEP 4 2012
WIC073-097-115-135-137-050130-
/O.CON.KGRB.SV.W.0099.000000T0000Z-120905T0130Z/
MARATHON WI-WAUSHARA WI-WAUPACA WI-SHAWANO WI-PORTAGE WI-
751 PM CDT TUE SEP 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR
PORTAGE...WESTERN SHAWANO...WAUPACA...NORTHERN WAUSHARA AND
SOUTHEASTERN MARATHON COUNTIES UNTIL 830 PM CDT...
AT 743 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 11 MILES SOUTHWEST OF ANTIGO TO
PLAINFIELD...MOVING EAST AT 30 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
WITTENBERG AND AMHERST AROUND 800 PM CDT.
HARTMAN CREEK STATE PARK AROUND 810 PM CDT.
WAUPACA AROUND 825 PM CDT.
AT 735 PM CDT A 60 MPH WIND GUST WAS REPORTED IN PLOVER IN CENTRAL
PORTAGE COUNTY BY A SPOTTER.
AT 730 PM CDT A SPOTTER REPORTED A STOP SIGN BLOWN OVER AS WELL AS
SEVERAL SMALL TREES IN ROTHSCHILD IN CENTRAL MARATHON COUNTY.
OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE FANCHER...
ROSHOLT...NORRIE...ELDERON...ANIWA...ALMOND...NELSONVILLE...
GALLOWAY...ELAND AND BIRNAMWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
&&
LAT...LON 4410 8960 4424 8961 4425 8972 4453 8961
4478 8962 4497 8973 4502 8930 4497 8898
4494 8898 4494 8882 4409 8889
TIME...MOT...LOC 0045Z 270DEG 26KT 4502 8926 4420 8949
WIND...HAIL 70MPH 1.00IN
$$
EB012
WWUS53 KGRB 050106
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
806 PM CDT TUE SEP 4 2012
WIC073-097-115-135-137-050130-
/O.CON.KGRB.SV.W.0099.000000T0000Z-120905T0130Z/
MARATHON WI-WAUSHARA WI-WAUPACA WI-SHAWANO WI-PORTAGE WI-
806 PM CDT TUE SEP 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
PORTAGE...SHAWANO...WAUPACA...NORTHERN WAUSHARA AND SOUTHEASTERN
MARATHON COUNTIES UNTIL 830 PM CDT...
AT 800 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF HAIL UP TO ONE INCH...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 11 MILES NORTHEAST OF WITTENBERG TO 8
MILES EAST OF PLAINFIELD...MOVING EAST AT 30 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
TIGERTON AND WAUPACA BETWEEN 810 AND 820 PM CDT.
OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE SPLIT
ROCK...SCANDINAVIA...IOLA...BOWLER...MOUNT MORRIS...RURAL...KING...
BIG FALLS...SAXEVILLE AND TILLEDA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS
MARATHON AND PORTAGE COUNTIES. THIS IS AN EXTREMELY DANGEROUS
SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY
FROM WINDOWS.
&&
LAT...LON 4410 8960 4456 8939 4497 8933 4498 8928
4497 8898 4494 8898 4494 8882 4409 8889
TIME...MOT...LOC 0103Z 270DEG 26KT 4494 8901 4422 8928
WIND...HAIL 70MPH 1.00IN
$$
TE118
WWUS53 KGRB 050119
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
819 PM CDT TUE SEP 4 2012
WIC073-097-115-135-137-050127-
/O.CAN.KGRB.SV.W.0099.000000T0000Z-120905T0130Z/
MARATHON WI-WAUSHARA WI-WAUPACA WI-SHAWANO WI-PORTAGE WI-
819 PM CDT TUE SEP 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PORTAGE...SHAWANO...
WAUPACA...NORTHERN WAUSHARA AND SOUTHEASTERN MARATHON COUNTIES IS
CANCELLED...
THIS WARNING HAS BEEN REPLACED WITH A NEW SEVERE THUNDERSTORM
WARNING FOR PARTS OF SHAWANO...WAUPACA AND OUTAGAMIE COUNTIES UNTIL
9 PM CDT.
LAT...LON 4410 8960 4456 8939 4497 8933 4498 8928
4497 8898 4494 8898 4494 8882 4409 8889
TIME...MOT...LOC 0117Z 270DEG 26KT 4494 8887 4422 8914
$$
EBThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 8:16 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Shawano, Waupaca | 35 min |
| Sep 4, 8:56 PM CDT | Special Marine Warning | GRB | 49 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2012Every severe thunderstorm warning in 2012
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.