Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 7, NWS Milwaukee, WI

April 3, 2011Lafayette County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Apr 3, 2011, 8:17 PM CDT for Lafayette County, Wisconsin. It was in force for 43 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: Apr 3, 2011, 8:17 PM CDT (01:17 UTC)
Expired: Apr 3, 2011, 9:00 PM CDT
In force: 43 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Lafayette County, WI

The radar

The Quad Cities radar (KDVN), 118 km from the middle of the area, began a volume at 01:17 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
Apr 3, 8:55 PM CDT	HAIL 1.75	Nw Darlington, WI	GOLF BALL SIZE HAIL REPORTED BY LAFAYETTE COUNTY SHERIFF DEPUTY NORTHWEST OF DARLINGTON AND EAST OF BELMONT.

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
Apr 3, 5:57 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.3 hours before the alert went out and 116 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: 1790 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 1684 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.9

Open this sounding in Storm Lab

The text

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

401 
WUUS53 KMKX 040117
SVRMKX
WIC065-040200-
/O.NEW.KMKX.SV.W.0007.110404T0117Z-110404T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
817 PM CDT SUN APR 3 2011

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAFAYETTE COUNTY IN SOUTH CENTRAL WISCONSIN...

* UNTIL 900 PM CDT

* AT 812 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 10 MILES WEST OF MENOMINEE...OR 15 MILES WEST OF
  GALENA...AND MOVING NORTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BENTON AROUND 835 PM CDT.
  SHULLSBURG AROUND 840 PM CDT.
  DARLINGTON AROUND 850 PM CDT.
  YELLOWSTONE LAKE STATE PARK AROUND 855 PM CDT.
  ARGYLE AND BLANCHARDVILLE AROUND 900 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE LEAD
MINE...NEW DIGGINGS...GRATIOT...LAMONT...WIOTA...SOMERS...YELLOWSTONE
LAKE ST PARK AND WOODFORD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING
FOR SOUTH CENTRAL WISCONSIN.

LAT...LON 4264 9043 4281 8992 4281 8984 4250 8984
      4252 9036 4251 9043
TIME...MOT...LOC 0117Z 246DEG 49KT 4246 9064
WIND...HAIL <50MPH 1.00IN

$$

GEHRING

1 follow-up statement

590 
WWUS53 KMKX 040129
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
829 PM CDT SUN APR 3 2011

WIC065-040200-
/O.CON.KMKX.SV.W.0007.000000T0000Z-110404T0200Z/
LAFAYETTE WI-
829 PM CDT SUN APR 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR LAFAYETTE
COUNTY UNTIL 900 PM CDT...

AT 825 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
STORM WAS LOCATED NEAR MENOMINEE...OR 10 MILES NORTHWEST OF GALENA...
MOVING EAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BENTON AROUND 840 PM CDT.
  SHULLSBURG AROUND 845 PM CDT.
  DARLINGTON AROUND 855 PM CDT.
  YELLOWSTONE LAKE STATE PARK AROUND 900 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE NEW
DIGGINGS...LEAD MINE...GRATIOT...LAMONT AND WIOTA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

THIS STORM HAS A HISTORY OF PRODUCING GOLF BALL SIZE HAIL NEAR 
DUBUQUE IOWA. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY 
AWAY FROM WINDOWS!

&&

LAT...LON 4264 9043 4281 8992 4281 8984 4250 8984
      4252 9036 4251 9043
TIME...MOT...LOC 0128Z 249DEG 43KT 4253 9054
WIND...HAIL <50MPH 1.75IN

$$

WOOD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 7:52 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette	24 min
Apr 3, 8:50 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Iowa, Lafayette	25 min
Apr 3, 9:14 PM CDT	Severe Thunderstorm Warning	MKX	Dane	46 min
Apr 3, 9:44 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Dodge, Jefferson	46 min
Apr 3, 9:50 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	25 min
Apr 3, 10:06 PM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	24 min
Apr 3, 10:09 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Sauk	36 min
Apr 3, 10:18 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac	42 min
Apr 3, 10:23 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Rock	35 min
Apr 3, 10:36 PM CDT	Special Marine Warning	MKX		99 min
Apr 3, 10:45 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson	26 min
Apr 3, 11:04 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Washington	41 min
Apr 3, 11:23 PM CDT	Severe Thunderstorm Warning	MKX	Ozaukee, Sheboygan, Washington	52 min
Apr 3, 11:54 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	23 min
Apr 4, 3:48 AM CDT	Small Craft Advisory	MKX		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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.