Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 49, NWS Milwaukee, WI

August 2, 2015Ozaukee County, Washington County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 2, 2015, 6:31 PM CDT for Ozaukee County, Washington County, Wisconsin. It was in force for 29 min. 4 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: Aug 2, 2015, 6:31 PM CDT (23:31 UTC)
Expired: Aug 2, 2015, 7:00 PM CDT
In force: 29 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Ozaukee County, WI, Washington County, WI

The radar

The Milwaukee radar (KMKX), 67 km from the middle of the area, began a volume at 23:33 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
Aug 2, 6:33 PM CDT	HAIL 1.75	3 N West Bend, WI
Aug 2, 6:34 PM CDT	HAIL 1.75	West Bend, WI
Aug 2, 6:38 PM CDT	HAIL 1.75	Newburg, WI	RELAYED VIA TWITTER.
Aug 2, 6:42 PM CDT	TSTM WND GST 55	Belgium, WI

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
Aug 2, 2:59 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.5 hours before the alert went out and 119 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: 1667 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1134 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

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

641 
WUUS53 KMKX 022331
SVRMKX
WIC089-131-030000-
/O.NEW.KMKX.SV.W.0049.150802T2331Z-150803T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
631 PM CDT SUN AUG 2 2015

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN WASHINGTON COUNTY IN SOUTHEASTERN WISCONSIN...
  OZAUKEE COUNTY IN SOUTHEASTERN WISCONSIN...

* UNTIL 700 PM CDT

* AT 630 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER WEST BEND...
  MOVING EAST AT 50 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WEST BEND...GRAFTON...CEDARBURG...PORT WASHINGTON...JACKSON...
  SAUKVILLE...KEWASKUM...BELGIUM...FREDONIA...NEWBURG...ADDISON...
  WAYNE...FILLMORE...SAINT LAWRENCE...WAUBEKA...ALLENTON...NENNO...
  HARRINGTON BEACH ST PARK...KOHLSVILLE AND BOLTONVILLE.

PEOPLE ATTENDING THE OZAUKEE COUNTY FAIR SHOULD SEEK SAFE SHELTER
IMMEDIATELY!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4338 8787 4330 8789 4329 8790 4337 8840
      4354 8840 4354 8780 4349 8779
TIME...MOT...LOC 2330Z 278DEG 45KT 4344 8815 

HAIL...1.25IN
WIND...60MPH
 
$$

SPM

2 follow-up statements

851 
WWUS53 KMKX 022340
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
640 PM CDT SUN AUG 2 2015

WIC089-131-030000-
/O.CON.KMKX.SV.W.0049.000000T0000Z-150803T0000Z/
WASHINGTON WI-OZAUKEE WI-
640 PM CDT SUN AUG 2 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR NORTHERN WASHINGTON AND OZAUKEE COUNTIES...

AT 639 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR NEWBURG...OR 
NEAR SAUKVILLE...MOVING EAST AT 50 MPH. AT 634 PM CDT...GOLF BALL 
SIZE HAIL WAS REPORTED ON THE NORTH SIDE OF WEST BEND.

HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WEST BEND...GRAFTON...CEDARBURG...PORT WASHINGTON...JACKSON...
SAUKVILLE...KEWASKUM...BELGIUM...FREDONIA...NEWBURG...ADDISON...
WAYNE...FILLMORE...SAINT LAWRENCE...WAUBEKA...ALLENTON...NENNO...
HARRINGTON BEACH ST PARK...KOHLSVILLE AND BOLTONVILLE.

PEOPLE ATTENDING THE OZAUKEE COUNTY FAIR SHOULD SEEK SAFE SHELTER
IMMEDIATELY!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4338 8787 4330 8789 4329 8790 4337 8840
      4354 8840 4354 8780 4349 8779
TIME...MOT...LOC 2339Z 278DEG 45KT 4342 8798 

HAIL...1.25IN
WIND...60MPH
 
$$

SPM

595 
WWUS53 KMKX 022346
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
646 PM CDT SUN AUG 2 2015

WIC089-131-030000-
/O.CON.KMKX.SV.W.0049.000000T0000Z-150803T0000Z/
WASHINGTON WI-OZAUKEE WI-
646 PM CDT SUN AUG 2 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR NORTHERN WASHINGTON AND OZAUKEE COUNTIES...

AT 645 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PORT 
WASHINGTON...MOVING EAST AT 50 MPH. A 640 PM CDT...THERE WERE 
NUMEROUS REPORTS OF HALF DOLLAR TO GOLF BALL SIZED HAIL NEAR WEST 
BEND.

HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
         DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT 
         WIND DAMAGE TO ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WEST BEND...GRAFTON...CEDARBURG...PORT WASHINGTON...JACKSON...
SAUKVILLE...KEWASKUM...BELGIUM...FREDONIA...NEWBURG...ADDISON...
WAYNE...FILLMORE...SAINT LAWRENCE...WAUBEKA...ALLENTON...NENNO...
HARRINGTON BEACH ST PARK...KOHLSVILLE AND BOLTONVILLE.

PEOPLE ATTENDING THE OZAUKEE COUNTY FAIR SHOULD SEEK SAFE SHELTER
IMMEDIATELY!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4338 8787 4330 8789 4329 8790 4337 8840
      4354 8840 4354 8780 4349 8779
TIME...MOT...LOC 2345Z 278DEG 45KT 4341 8788 

HAIL...1.75IN
WIND...60MPH
 
$$

SPM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 3:43 AM CDT	Gale Warning	MKX		15 hr
Aug 2, 4:28 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Green Lake	62 min
Aug 2, 4:56 PM CDT	Special Marine Warning	MKX		94 min
Aug 2, 5:02 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Sheboygan	58 min
Aug 2, 5:26 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	34 min
Aug 2, 5:41 PM CDT	Special Marine Warning	MKX		49 min
Aug 2, 5:52 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Ozaukee, Sheboygan, Washington	38 min
Aug 2, 6:03 PM CDT	Areal Flood Advisory	MKX	Fond du Lac, Sheboygan	117 min
Aug 2, 6:28 PM CDT	Special Marine Warning	MKX		62 min
Aug 2, 6:29 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac	31 min
Aug 2, 6:48 PM CDT	Severe Thunderstorm Warning	MKX	Ozaukee, Washington	42 min
Aug 2, 6:54 PM CDT	Areal Flood Advisory	MKX	Ozaukee, Washington	2 hr
Aug 2, 6:57 PM CDT	Severe Thunderstorm Warning	MKX	Ozaukee	15 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2015 Every severe thunderstorm warning in 2015

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.