Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 78, NWS Green Bay, WI

July 30, 2012Brown County, Door County, Kewaunee County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 30, 2012, 5:58 PM CDT for Brown County, Door County, Kewaunee County, Wisconsin. It was in force for 62 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 30, 2012, 5:58 PM CDT (22:58 UTC)
Expired: Jul 30, 2012, 7:00 PM CDT
In force: 62 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Brown County, WI, Door County, WI, Kewaunee County, WI

The radar

The Green Bay radar (KGRB), 43 km from the middle of the area, began a volume at 22:57 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
Jul 30, 1:28 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.0 hours before the alert went out and 42 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: 455 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 805 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

480 
WUUS53 KGRB 302258
SVRGRB
WIC009-029-061-310000-
/O.NEW.KGRB.SV.W.0078.120730T2258Z-120731T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
558 PM CDT MON JUL 30 2012

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BROWN COUNTY IN NORTHEAST WISCONSIN...
  DOOR COUNTY IN NORTHEAST WISCONSIN...
  KEWAUNEE COUNTY IN NORTHEAST WISCONSIN...

* UNTIL 700 PM CDT

* AT 553 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED NEAR GREEN BAY...AND MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LUXEMBURG AROUND 625 PM CDT.
  KEWAUNEE AROUND 645 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
CHERNEYVILLE...PILSEN...NEUERN...ELLISVILLE...SCARBORO...CASCO...
KROK...SLOVAN...EAST KROK AND BIRCHWOOD.

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 4470 8734 4455 8746 4434 8753 4433 8755
      4433 8778 4462 8779 4464 8783 4465 8776
      4469 8773 4473 8773 4483 8763 4481 8729
TIME...MOT...LOC 2256Z 281DEG 25KT 4455 8797
WIND...HAIL 60MPH 1.50IN

$$

ECKBERG

3 follow-up statements

936 
WWUS53 KGRB 302313
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
613 PM CDT MON JUL 30 2012

WIC009-029-061-310000-
/O.CON.KGRB.SV.W.0078.000000T0000Z-120731T0000Z/
BROWN WI-DOOR WI-KEWAUNEE WI-
613 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KEWAUNEE... 
SOUTHERN DOOR AND NORTHEASTERN BROWN COUNTIES UNTIL 700 PM CDT...

AT 607 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE 
HAIL...AND DAMAGING WINDS.  THIS STORM WAS LOCATED 7 MILES NORTHEAST 
OF GREEN BAY. ANOTHER SEVERE STORM WAS MOVING INTO FAR SOUTHERN
DOOR COUNTY NEAR NAMUR. THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH.

IN ADDITION...THIS STORM PRODUCED ONE HAIL ONE MILE SOUTH OF SUAMICO
AT 557 PM CDT. 

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ROSIERE AROUND 615 PM CDT. 
  LUXEMBURG AROUND 625 PM CDT.
  STANGLEVILLE AROUND 635 PM CDT. 
  KEWAUNEE AROUND 650 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE THIRY
DAEMS...NEUERN...PILSEN...ELLISVILLE...SCARBORO...CASCO...SLOVAN...
KROK...EAST KROK AND RIO CREEK.

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 4470 8734 4455 8746 4434 8753 4433 8755
      4433 8778 4462 8779 4464 8783 4465 8776
      4469 8773 4473 8773 4483 8763 4481 8729
TIME...MOT...LOC 2309Z 281DEG 25KT 4455 8786
WIND...HAIL 60MPH 1.50IN

$$

ECKBERG

491 
WWUS53 KGRB 302328
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
628 PM CDT MON JUL 30 2012

WIC009-029-302337-
/O.CAN.KGRB.SV.W.0078.000000T0000Z-120731T0000Z/
BROWN WI-DOOR WI-
628 PM CDT MON JUL 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR DOOR AND NORTHEASTERN BROWN
COUNTIES IS CANCELLED...

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

LAT...LON 4435 8777 4463 8776 4455 8746 4435 8753
      4433 8755
TIME...MOT...LOC 2327Z 295DEG 26KT 4452 8780

$$

WIC061-310000-
/O.CON.KGRB.SV.W.0078.000000T0000Z-120731T0000Z/
KEWAUNEE WI-
628 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KEWAUNEE
COUNTY UNTIL 700 PM CDT...

AT 625 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 4 MILES WEST OF LUXEMBURG...OR 9 MILES EAST OF
GREEN BAY...MOVING SOUTHEAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LUXEMBURG AROUND 635 PM CDT.
  KEWAUNEE AROUND 655 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE NEUERN...
CHERNEYVILLE...PILSEN...ELLISVILLE...SCARBORO...STANGELVILLE...
SLOVAN...KROK...BIRCHWOOD AND EAST KROK.

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 4435 8777 4463 8776 4455 8746 4435 8753
      4433 8755
TIME...MOT...LOC 2327Z 295DEG 26KT 4452 8780
WIND...HAIL <50MPH 1.00IN

$$

ECKBERG

449 
WWUS53 KGRB 302344
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
644 PM CDT MON JUL 30 2012

WIC061-310000-
/O.CON.KGRB.SV.W.0078.000000T0000Z-120731T0000Z/
KEWAUNEE WI-
644 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
KEWAUNEE COUNTY UNTIL 700 PM CDT...

AT 642 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
THIS STORM WAS LOCATED 7 MILES NORTH OF DENMARK...OR 10 MILES
SOUTHEAST OF GREEN BAY...MOVING SOUTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF SOUTHERN
KEWAUNEE COUNTY...INCLUDING THE FOLLOWING LOCATIONS CHERNEYVILLE...
PILSEN...CURRAN...ELLISVILLE...STANGELVILLE...KROK AND EAST KROK.

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 4435 8777 4436 8777 4454 8776 4451 8748
      4435 8753 4433 8755
TIME...MOT...LOC 2344Z 288DEG 21KT 4444 8779
WIND...HAIL <50MPH 1.50IN

$$

ECKBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 4:36 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	24 min
Jul 30, 5:28 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto	47 min
Jul 30, 5:32 PM CDT	Special Marine Warning	GRB		51 min
Jul 30, 5:50 PM CDT	Severe Thunderstorm Warning	GRB	Brown	40 min
Jul 30, 6:04 PM CDT	Special Marine Warning	GRB		86 min
Jul 30, 6:06 PM CDT	Severe Thunderstorm Warning	GRB	Door	39 min
Jul 30, 6:36 PM CDT	Severe Thunderstorm Warning	GRB	Brown	39 min
Jul 30, 6:44 PM CDT	Severe Thunderstorm Warning	GRB	Door	61 min
Jul 30, 6:49 PM CDT	Special Marine Warning	GRB		116 min
Jul 30, 6:53 PM CDT	Severe Thunderstorm Warning	GRB	Kewaunee, Manitowoc	37 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2012 Every 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.