Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 91, NWS Green Bay, WI

July 19, 2011Waupaca County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 19, 2011, 10:20 PM CDT for Waupaca County, Wisconsin. It was in force for 40 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 19, 2011, 10:20 PM CDT (03:20 UTC)
Expired: Jul 19, 2011, 11:00 PM CDT
In force: 40 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Waupaca County, WI

The radar

The Green Bay radar (KGRB), 63 km from the middle of the area, began a volume at 03:23 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 19, 5:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.3 hours before the alert went out and 64 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: 1847 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

426 
WUUS53 KGRB 200320
SVRGRB
WIC135-200400-
/O.NEW.KGRB.SV.W.0091.110720T0320Z-110720T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
1020 PM CDT TUE JUL 19 2011

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

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

* UNTIL 1100 PM CDT

* AT 1014 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES NORTHWEST OF AMHERST...
  OR 8 MILES EAST OF STEVENS POINT...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  IOLA AROUND 1030 PM CDT.
  WAUPACA AROUND 1035 AM CDT.
  MANAWA AROUND 1050 PM CDT.
  NEW LONDON AROUND 1055 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
NORTHLAND...SCANDINAVIA...IOLA...OGDENSBURG...MANAWA...SYMCO...
ROYALTON AND NORTHPORT.

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 THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4425 8922 4468 8922 4468 8860 4459 8860
      4459 8874 4424 8874
TIME...MOT...LOC 0319Z 277DEG 40KT 4452 8932
WIND...HAIL 60MPH <.75IN

$$

ECKBERG

3 follow-up statements

881 
WWUS53 KGRB 200335
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1035 PM CDT TUE JUL 19 2011

WIC135-200400-
/O.CON.KGRB.SV.W.0091.000000T0000Z-110720T0400Z/
WAUPACA WI-
1035 PM CDT TUE JUL 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WAUPACA COUNTY
UNTIL 1100 PM CDT...

AT 1032 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 7 MILES EAST OF AMHERST...OR 10 MILES
NORTH OF WAUPACA...MOVING EAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  IOLA AROUND 1035 PM CDT. 
  OGDENSBURG AND WAUPACA AROUND 1040 PM CDT.
  SYMCO AROUND 1050 PM CDT. 
  NEW LONDON AROUND 1100 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE
OGDENSBURG...MANAWA...SYMCO...ROYALTON AND NORTHPORT.

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 THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4425 8922 4468 8922 4468 8860 4459 8860
      4459 8874 4424 8874
TIME...MOT...LOC 0333Z 277DEG 40KT 4448 8912
WIND...HAIL 60MPH <.75IN

$$

ECKBERG

930 
WWUS53 KGRB 200345
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1045 PM CDT TUE JUL 19 2011

WIC135-200400-
/O.CON.KGRB.SV.W.0091.000000T0000Z-110720T0400Z/
WAUPACA WI-
1045 PM CDT TUE JUL 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WAUPACA COUNTY
UNTIL 1100 PM CDT...

AT 1041 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 9 MILES NORTH OF WAUPACA...MOVING
EAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ROYALTON AROUND 1050 PM CDT.
  NEW LONDON AROUND 1100 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE ROYALTON
AND NORTHPORT.

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 THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4425 8922 4468 8922 4468 8860 4459 8860
      4459 8874 4424 8874
TIME...MOT...LOC 0345Z 277DEG 40KT 4446 8893
WIND...HAIL 60MPH <.75IN

$$

ECKBERG

136 
WWUS53 KGRB 200354
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1054 PM CDT TUE JUL 19 2011

WIC135-200404-
/O.EXP.KGRB.SV.W.0091.000000T0000Z-110720T0400Z/
WAUPACA WI-
1054 PM CDT TUE JUL 19 2011

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

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

LAT...LON 4425 8922 4468 8922 4468 8860 4459 8860
      4459 8874 4424 8874
TIME...MOT...LOC 0354Z 277DEG 40KT 4445 8879

$$

TH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:29 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	61 min
Jul 19, 8:01 PM CDT	Severe Thunderstorm Warning	GRB	Wood	59 min
Jul 19, 8:30 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	33 min
Jul 19, 8:41 PM CDT	Flash Flood Warning	GRB	Marathon, Portage, Wood	3 hr
Jul 19, 9:46 PM CDT	Severe Thunderstorm Warning	GRB	Portage	59 min
Jul 19, 10:01 PM CDT	Severe Thunderstorm Warning	GRB	Wood	31 min
Jul 19, 10:21 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Wood	39 min
Jul 19, 10:49 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	41 min
Jul 19, 10:56 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca	34 min
Jul 19, 11:13 PM CDT	Areal Flood Advisory	GRB	Brown, Calumet, Outagamie, Waupaca, Winnebago	87 min
Jul 19, 11:58 PM CDT	Flash Flood Warning	GRB	Marathon, Portage, Wood	116 min
Jul 20, 12:13 AM CDT	Special Marine Warning	GRB		92 min
Jul 20, 4:10 AM CDT	Small Craft Advisory	GRB		23 hr

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.