Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 101, NWS Green Bay, WI

July 31, 2011Waupaca County, Waushara County, Winnebago County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 31, 2011, 6:28 PM CDT for Waupaca County, Waushara County, Winnebago County, Wisconsin. It was in force for 44 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: Jul 31, 2011, 6:28 PM CDT (23:28 UTC)
Expired: Jul 31, 2011, 7:12 PM CDT
In force: 44 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Waupaca County, WI, Waushara County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 80 km from the middle of the area, began a volume at 23:28 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, 11.5 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1057 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1170 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

042 
WUUS53 KGRB 312328
SVRGRB
WIC135-137-139-010015-
/O.NEW.KGRB.SV.W.0101.110731T2328Z-110801T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
628 PM CDT SUN JUL 31 2011

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL WAUPACA COUNTY IN NORTHEAST WISCONSIN...
  EASTERN WAUSHARA COUNTY IN CENTRAL WISCONSIN...
  SOUTHWESTERN WINNEBAGO COUNTY IN EAST CENTRAL WISCONSIN...

* UNTIL 715 PM CDT

* AT 623 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LAKE POYGAN...OR 13 MILES SOUTHEAST OF WAUPACA...AND MOVING
  SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LAKE POYGAN...RUSH LAKE...BORTH...EUREKA...OMRO...WAUKAU...FISK AND
  PICKETT.

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.

&&

LAT...LON 4389 8886 4394 8890 4398 8889 4398 8893
      4424 8912 4430 8896 4389 8851 4389 8855
TIME...MOT...LOC 2328Z 325DEG 29KT 4415 8891
WIND...HAIL 60MPH 1.00IN

$$

MPC

3 follow-up statements

113 
WWUS53 KGRB 312347
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
647 PM CDT SUN JUL 31 2011

WIC135-312357-
/O.CAN.KGRB.SV.W.0101.000000T0000Z-110801T0015Z/
WAUPACA WI-
647 PM CDT SUN JUL 31 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WAUPACA COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4389 8886 4394 8890 4398 8889 4398 8893
      4417 8907 4423 8891 4389 8851
TIME...MOT...LOC 2347Z 325DEG 29KT 4402 8879

$$

WIC137-139-010015-
/O.CON.KGRB.SV.W.0101.000000T0000Z-110801T0015Z/
WAUSHARA WI-WINNEBAGO WI-
647 PM CDT SUN JUL 31 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
WINNEBAGO AND NORTHEASTERN WAUSHARA COUNTIES UNTIL 715 PM CDT...

AT 642 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
SOUTH OF LAKE POYGAN...OR 9 MILES NORTHEAST OF BERLIN...MOVING
SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  RUSH LAKE...OMRO...WAUKAU...FISK AND PICKETT.

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.

&&

LAT...LON 4389 8886 4394 8890 4398 8889 4398 8893
      4417 8907 4423 8891 4389 8851
TIME...MOT...LOC 2347Z 325DEG 29KT 4402 8879
WIND...HAIL 60MPH 1.00IN

$$

MPC

511 
WWUS53 KGRB 010002
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
702 PM CDT SUN JUL 31 2011

WIC137-139-010015-
/O.CON.KGRB.SV.W.0101.000000T0000Z-110801T0015Z/
WAUSHARA WI-WINNEBAGO WI-
702 PM CDT SUN JUL 31 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
WINNEBAGO AND SOUTHEASTERN WAUSHARA COUNTIES UNTIL 715 PM CDT...

AT 700 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
EAST OF RUSH LAKE...OR 9 MILES NORTHEAST OF RIPON...MOVING SOUTHEAST
AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF SOUTHERN WINNEBAGO COUNTY.

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.

&&

LAT...LON 4412 8902 4408 8877 4389 8851 4389 8886
      4394 8890 4398 8889 4398 8893
TIME...MOT...LOC 0003Z 325DEG 29KT 4391 8869
WIND...HAIL 60MPH 1.00IN

$$

MPC

213 
WWUS53 KGRB 010012
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
712 PM CDT SUN JUL 31 2011

WIC137-139-010022-
/O.CAN.KGRB.SV.W.0101.000000T0000Z-110801T0015Z/
WAUSHARA WI-WINNEBAGO WI-
712 PM CDT SUN JUL 31 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WINNEBAGO AND
SOUTHEASTERN WAUSHARA COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED 
AREA.

LAT...LON 4412 8902 4408 8877 4389 8851 4389 8886
      4394 8890 4398 8889 4398 8893
TIME...MOT...LOC 0012Z 325DEG 29KT 4385 8863

$$

MPC

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 31, 6:16 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca, Waushara, Wood	44 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

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.