Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 70, NWS Green Bay, WI

July 17, 20125 counties in Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 17, 2012, 3:40 PM CDT for 5 counties in Wisconsin. It was in force for 50 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 17, 2012, 3:40 PM CDT (20:40 UTC)
Expired: Jul 17, 2012, 4:30 PM CDT
In force: 50 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, WI, Calumet County, WI, Manitowoc County, WI, Outagamie County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 50 km from the middle of the area, began a volume at 20:41 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.

What was reported inside it

Time	Report	Where	Remark
Jul 17, 3:41 PM CDT	TSTM WND DMG	Kaukauna, WI	TREE DOWN. DELAYED REPORT. TIME ESTIMATED BY RADAR.
Jul 17, 3:45 PM CDT	HAIL 0.5	Darboy, WI	SUSTAINED WINDS BETWEEN 35 AND 40 MPH
Jul 17, 3:45 PM CDT	HAIL 1	Darboy, WI	REPORT RECEIVED VIA FACEBOOK FROM WFRV-TV. TIME OF EVENT IS ESTIMATED AND ORIGINIAL SOURCE OF REPORT IS UNKNOWN.
Jul 17, 3:56 PM CDT	HAIL 0.88	Darboy, WI
Jul 17, 3:58 PM CDT	HAIL 1.75	2 S Darboy, WI	DELAYED PUBLIC REPORT FROM THE INTERSECTION OF HWY 10 AND COUNTY HWY N - RELAYED BY EMERGENCY MANAGER. HAIL LASTED 5-10 MINUTES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.7 hours before the alert went out and 47 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: 1426 J/kg
Mixed-layer CIN: -224 J/kg
Mixed-layer LCL: 1347 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: -6 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.

242 
WUUS53 KGRB 172040
SVRGRB
WIC009-015-071-087-139-172130-
/O.NEW.KGRB.SV.W.0070.120717T2040Z-120717T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
340 PM CDT TUE JUL 17 2012

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BROWN COUNTY IN NORTHEAST WISCONSIN...
  CALUMET COUNTY IN EAST CENTRAL WISCONSIN...
  MANITOWOC COUNTY IN EAST CENTRAL WISCONSIN...
  SOUTHEASTERN OUTAGAMIE COUNTY IN NORTHEAST WISCONSIN...
  EAST CENTRAL WINNEBAGO COUNTY IN EAST CENTRAL WISCONSIN...

* UNTIL 430 PM CDT

* AT 337 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
  THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES WEST OF
  DENMARK TO HIGH CLIFF STATE PARK TO 5 MILES SOUTHWEST OF MENASHA...
  AND MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MANITOWOC...HIGH CLIFF STATE PARK...BRILLION...CHILTON...VALDERS...
  SHERWOOD...FOREST JUNCTION AND MORRISON.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4393 8817 4393 8821 4420 8878 4421 8842
      4439 8808 4414 8755 4410 8764 4405 8764
      4404 8766 4401 8766 4393 8782 4392 8817
TIME...MOT...LOC 2040Z 303DEG 24KT 4434 8796 4416 8831
          4415 8852
WIND...HAIL 60MPH <.75IN

$$

RDM

5 follow-up statements

331 
WWUS53 KGRB 172047
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
347 PM CDT TUE JUL 17 2012

WIC009-015-071-087-139-172130-
/O.CON.KGRB.SV.W.0070.000000T0000Z-120717T2130Z/
CALUMET WI-OUTAGAMIE WI-WINNEBAGO WI-MANITOWOC WI-BROWN WI-
347 PM CDT TUE JUL 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BROWN...MANITOWOC...EAST CENTRAL WINNEBAGO...SOUTHEASTERN OUTAGAMIE
AND CALUMET COUNTIES UNTIL 430 PM CDT...

AT 341 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A LINE OF SEVERE 
THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. TREES 
WERE REPORTED DOWN IN THE CITY OF APPLETON AT 338PM. THESE STORMS 
WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES WEST OF DENMARK TO 
HIGH CLIFF STATE PARK TO 7 MILES SOUTHWEST OF MENASHA...MOVING 
SOUTHEAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BRILLION AROUND 355 PM CDT.
  CHILTON AROUND 410 PM CDT.
  VALDERS AROUND 420 PM CDT.
  MANITOWOC AROUND 430 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE 
WAYSIDE...HILBERT...CENTRAL LAKE WINNEBAGO...MAPLE 
GROVE...STOCKBRIDGE...ROSECRANS...POTTER...MENCHALVILLE...WELLS AND 
TAUS.

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.

IF ON OR NEAR LAKE WINNEBAGO...GET OUT OF THE WATER AND MOVE INDOORS 
OR INSIDE A VEHICLE. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH 
TO BE STRUCK BY LIGHTNING. IN ADDITION...THUNDERSTORMS CAN PRODUCE 
LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO 
DOCK AND SEEK SAFE SHELTER NOW. DON'T BE CAUGHT ON THE WATER IN A 
THUNDERSTORM.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4393 8817 4393 8821 4420 8878 4421 8842
      4439 8808 4414 8755 4410 8764 4405 8764
      4404 8766 4401 8766 4393 8782 4392 8817
TIME...MOT...LOC 2046Z 303DEG 24KT 4431 8793 4414 8826
          4411 8850
WIND...HAIL 60MPH <.75IN

$$

RDM

460 
WWUS53 KGRB 172058
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
358 PM CDT TUE JUL 17 2012

WIC087-172108-
/O.CAN.KGRB.SV.W.0070.000000T0000Z-120717T2130Z/
OUTAGAMIE WI-
358 PM CDT TUE JUL 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OUTAGAMIE COUNTY
IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4393 8817 4393 8821 4412 8860 4418 8833
      4434 8798 4414 8755 4410 8764 4405 8764
      4404 8766 4401 8766 4393 8782 4392 8817
TIME...MOT...LOC 2058Z 303DEG 24KT 4426 8784 4410 8817
          4407 8841

$$

WIC009-015-071-139-172130-
/O.CON.KGRB.SV.W.0070.000000T0000Z-120717T2130Z/
CALUMET WI-WINNEBAGO WI-MANITOWOC WI-BROWN WI-
358 PM CDT TUE JUL 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BROWN...MANITOWOC...EAST CENTRAL WINNEBAGO AND CALUMET COUNTIES UNTIL
430 PM CDT...

AT 355 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM DENMARK TO 5 MILES
NORTH OF CHILTON TO 8 MILES NORTHEAST OF OSHKOSH...MOVING SOUTHEAST
AT 30 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

SEVERE THUNDERSTORMS WILL BE NEAR...
  CHILTON AROUND 415 PM CDT.
  VALDERS AROUND 420 PM CDT.
  MANITOWOC AROUND 430 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE WELLS...
TAUS...REEDSVILLE...KELLNERSVILLE...REIFS MILLS...KLOTEN...KILLSNAKE
WILDLIFE AREA...BRANT...QUINNEY AND GRIMMS.

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.

IF ON OR NEAR LAKE WINNEBAGO...GET OUT OF THE WATER AND MOVE INDOORS 
OR INSIDE A VEHICLE. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH 
TO BE STRUCK BY LIGHTNING. IN ADDITION...THUNDERSTORMS CAN PRODUCE 
LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO 
DOCK AND SEEK SAFE SHELTER NOW. DON'T BE CAUGHT ON THE WATER IN A 
THUNDERSTORM.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4393 8817 4393 8821 4412 8860 4418 8833
      4434 8798 4414 8755 4410 8764 4405 8764
      4404 8766 4401 8766 4393 8782 4392 8817
TIME...MOT...LOC 2058Z 303DEG 24KT 4426 8784 4410 8817
          4407 8841
WIND...HAIL 60MPH 0.88IN

$$

RDM

730 
WWUS53 KGRB 172108
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
408 PM CDT TUE JUL 17 2012

WIC009-139-172116-
/O.CAN.KGRB.SV.W.0070.000000T0000Z-120717T2130Z/
WINNEBAGO WI-BROWN WI-
408 PM CDT TUE JUL 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BROWN AND EAST
CENTRAL WINNEBAGO COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4392 8817 4393 8817 4393 8821 4403 8840
      4408 8840 4415 8815 4424 8786 4414 8756
      4410 8764 4406 8764 4400 8767 4393 8782
TIME...MOT...LOC 2106Z 303DEG 24KT 4423 8778 4409 8797
          4402 8834

$$

WIC015-071-172130-
/O.CON.KGRB.SV.W.0070.000000T0000Z-120717T2130Z/
CALUMET WI-MANITOWOC WI-
408 PM CDT TUE JUL 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
MANITOWOC AND SOUTHERN CALUMET COUNTIES UNTIL 430 PM CDT...

AT 405 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES SOUTH OF
DENMARK TO 5 MILES NORTHWEST OF VALDERS TO 9 MILES WEST OF CHILTON...
MOVING SOUTHEAST AT 30 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE
DAMAGING WINDS. RADAR ALSO INDICATES SOME ROTATION ALOFT NEAR 
HILBERT. 

SEVERE THUNDERSTORMS WILL BE NEAR...
  VALDERS AROUND 415 PM CDT.
  MANITOWOC AROUND 430 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE HAYTON...
CLARKS MILLS...BRANCH...KELLNERS CORNERS...MADSEN...JERICHO...SILVER
LAKE COLLEGE...NEWTONBERG...STEINTHAL AND MEGGERS.

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 4392 8817 4393 8817 4393 8821 4403 8840
      4408 8840 4415 8815 4424 8786 4414 8756
      4410 8764 4406 8764 4400 8767 4393 8782
TIME...MOT...LOC 2106Z 303DEG 24KT 4423 8778 4409 8797
          4402 8834
WIND...HAIL 60MPH 0.88IN

$$

RDM

053 
WWUS53 KGRB 172116
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
416 PM CDT TUE JUL 17 2012

WIC015-071-172130-
/O.CON.KGRB.SV.W.0070.000000T0000Z-120717T2130Z/
CALUMET WI-MANITOWOC WI-
416 PM CDT TUE JUL 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
MANITOWOC AND SOUTHEASTERN CALUMET COUNTIES UNTIL 430 PM CDT...

AT 414 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTH OF
MANITOWOC TO VALDERS TO 6 MILES SOUTHWEST OF CHILTON...MOVING
SOUTHEAST AT 30 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE
DAMAGING WINDS.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MANITOWOC AROUND 425 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE CLOVER...
NEWTONBERG...NEW HOLSTEIN...SCHOOL HILL...LOUIS CORNERS...NEWTON...
OSMAN AND SPRING VALLEY.

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 4392 8817 4393 8817 4393 8821 4399 8832
      4404 8826 4411 8806 4420 8780 4414 8756
      4410 8764 4406 8764 4400 8767 4393 8782
TIME...MOT...LOC 2116Z 303DEG 24KT 4416 8768 4404 8787
          4395 8823
WIND...HAIL 60MPH 0.88IN

$$

RDM

987 
WWUS53 KGRB 172126
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
426 PM CDT TUE JUL 17 2012

WIC015-071-172136-
/O.EXP.KGRB.SV.W.0070.000000T0000Z-120717T2130Z/
CALUMET WI-MANITOWOC WI-
426 PM CDT TUE JUL 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MANITOWOC AND
SOUTHEASTERN CALUMET COUNTIES WILL EXPIRE AT 430 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THESE
THUNDERSTORMS.

LAT...LON 4392 8817 4393 8817 4393 8821 4399 8832
      4404 8826 4411 8806 4420 8780 4414 8756
      4410 8764 4406 8764 4400 8767 4393 8782
TIME...MOT...LOC 2126Z 303DEG 24KT 4412 8760 4400 8779
          4391 8815

$$

RDM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 3:45 PM CDT	Special Marine Warning	GRB		55 min
Jul 17, 5:17 PM CDT	Areal Flood Advisory	GRB	Waushara	103 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.