Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 81, NWS Green Bay, WI

July 30, 2012Door County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 30, 2012, 6:44 PM CDT for Door County, Wisconsin. It was in force for 61 min. 1 report 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 30, 2012, 6:44 PM CDT (23:44 UTC)
Expired: Jul 30, 2012, 7:45 PM CDT
In force: 61 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Door County, WI

The radar

The Green Bay radar (KGRB), 104 km from the middle of the area, began a volume at 23:46 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 30, 7:30 PM CDT	HAIL 0.88	Fish Creek, WI	AT PENINSULA STATE PARK. TIME ESTIMATED.

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

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, 11.7 hours before the alert went out and 105 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.

164 
WUUS53 KGRB 302344
SVRGRB
WIC029-310045-
/O.NEW.KGRB.SV.W.0081.120730T2344Z-120731T0045Z/

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

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DOOR COUNTY IN NORTHEAST WISCONSIN...

* UNTIL 745 PM CDT

* AT 642 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 7 MILES EAST OF NEWPORT STATE
  PARK TO MARINETTE...AND MOVING SOUTH AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  EPHRAIM AROUND 650 PM CDT.
  EGG HARBOR AROUND 700 PM CDT.
  JACKSONPORT AROUND 715 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE FISH
CREEK...PENINSULA CENTER...BAILEYS HARBOR...CARLSVILLE...WHITEFISH
DUNES STATE PARK...VALMY...INSTITUTE AND WHITEFISH BAY.

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 4518 8704 4515 8702 4504 8709 4505 8712
      4497 8718 4493 8716 4485 8725 4493 8740
      4509 8727 4514 8725 4517 8727 4518 8726
      4516 8726 4518 8723 4517 8719 4520 8713
      4530 8708 4531 8699 4539 8696 4535 8695
TIME...MOT...LOC 2344Z 338DEG 20KT 4525 8685 4509 8752
WIND...HAIL 60MPH 1.00IN

$$

TH

4 follow-up statements

446 
WWUS53 KGRB 302354
SVSGRB

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

WIC029-310045-
/O.CON.KGRB.SV.W.0081.000000T0000Z-120731T0045Z/
DOOR WI-
654 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DOOR COUNTY
UNTIL 745 PM CDT...

AT 650 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 9 MILES EAST OF NEWPORT STATE
PARK TO 7 MILES EAST OF MARINETTE...MOVING SOUTH AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  EGG HARBOR AROUND 705 PM CDT.
  JACKSONPORT AROUND 720 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE PENINSULA
CENTER...BAILEYS HARBOR...CARLSVILLE...WHITEFISH DUNES STATE PARK...
INSTITUTE...WHITEFISH BAY AND VALMY.

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 4518 8704 4515 8702 4504 8709 4505 8712
      4497 8718 4493 8716 4485 8725 4493 8740
      4509 8727 4514 8725 4517 8727 4518 8726
      4516 8726 4518 8723 4517 8719 4520 8713
      4530 8708 4531 8699 4539 8696 4535 8695
TIME...MOT...LOC 2354Z 338DEG 20KT 4522 8679 4506 8746
WIND...HAIL 60MPH 1.00IN

$$

TH

400 
WWUS53 KGRB 310013
SVSGRB

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

WIC029-310045-
/O.CON.KGRB.SV.W.0081.000000T0000Z-120731T0045Z/
DOOR WI-
713 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DOOR COUNTY
UNTIL 745 PM CDT...

AT 708 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 15 MILES EAST OF NEWPORT STATE
PARK TO EGG HARBOR...MOVING SOUTHEAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  JACKSONPORT AROUND 730 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE INSTITUTE...
VALMY...WHITEFISH DUNES STATE PARK AND WHITEFISH BAY.

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 4518 8704 4515 8702 4504 8709 4505 8712
      4497 8718 4493 8716 4485 8725 4493 8740
      4509 8727 4514 8725 4517 8727 4518 8726
      4516 8726 4518 8723 4517 8719 4520 8713
      4530 8708 4531 8699 4539 8696 4535 8695
TIME...MOT...LOC 0013Z 297DEG 20KT 4517 8666 4501 8733
WIND...HAIL 60MPH 1.00IN

$$

TH

553 
WWUS53 KGRB 310030
SVSGRB

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

WIC029-310045-
/O.CON.KGRB.SV.W.0081.000000T0000Z-120731T0045Z/
DOOR WI-
730 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DOOR COUNTY
UNTIL 745 PM CDT...

AT 726 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 21 MILES EAST OF NEWPORT STATE
PARK TO JACKSONPORT...MOVING SOUTHEAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF DOOR COUNTY...
INCLUDING THE FOLLOWING LOCATIONS WHITEFISH BAY.

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 4518 8704 4515 8702 4504 8709 4505 8712
      4497 8718 4493 8716 4485 8725 4493 8740
      4509 8727 4514 8725 4517 8727 4518 8726
      4516 8726 4518 8723 4517 8719 4520 8713
      4530 8708 4531 8699 4539 8696 4535 8695
TIME...MOT...LOC 0030Z 297DEG 20KT 4513 8654 4497 8721
WIND...HAIL 60MPH 1.00IN

$$

TH

229 
WWUS53 KGRB 310047
SVSGRB

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

WIC029-310055-
/O.EXP.KGRB.SV.W.0081.000000T0000Z-120731T0045Z/
DOOR WI-
747 PM CDT MON JUL 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR DOOR COUNTY IS BEING
REISSUED...

PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION.

LAT...LON 4518 8704 4515 8702 4504 8709 4505 8712
      4497 8718 4493 8716 4485 8725 4493 8740
      4509 8727 4514 8725 4517 8727 4518 8726
      4516 8726 4518 8723 4517 8719 4520 8713
      4530 8708 4531 8699 4539 8696 4535 8695
TIME...MOT...LOC 0030Z 297DEG 20KT 4513 8654 4497 8721

$$

TH

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, 5:58 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Door, Kewaunee	62 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, 6:49 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.