Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 21, NWS Milwaukee, WI

April 10, 2011Columbia County, Marquette County, Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Apr 10, 2011, 7:41 PM CDT for Columbia County, Marquette County, Sauk County, Wisconsin. It was in force for 49 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: Apr 10, 2011, 7:41 PM CDT (00:41 UTC)
Expired: Apr 10, 2011, 8:30 PM CDT
In force: 49 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Columbia County, WI, Marquette County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 108 km from the middle of the area, began a volume at 00:43 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
Apr 10, 3:19 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.7 hours before the alert went out and 131 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: 1647 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1073 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 399 m²/s²
0-3 km storm-relative helicity: 397 m²/s²
Significant tornado parameter: 4.2
Supercell composite: 11.4

Open this sounding in Storm Lab

The text

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

181 
WUUS53 KMKX 110041
SVRMKX
WIC021-077-111-110130-
/O.NEW.KMKX.SV.W.0021.110411T0041Z-110411T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
741 PM CDT SUN APR 10 2011

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN...
  MARQUETTE COUNTY IN SOUTH CENTRAL WISCONSIN...
  EASTERN SAUK COUNTY IN SOUTH CENTRAL WISCONSIN...

* UNTIL 830 PM CDT

* AT 739 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  REEDSBURG...AND MOVING NORTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WISCONSIN DELLS AIRPORT...LAKE DELTON...WEST BARABOO AND BARABOO
  AROUND 750 PM CDT.
  WISCONSIN DELLS AND LAKE WISCONSIN AROUND 755 PM CDT.
  I90/94 WI RIVER BRIDGE AROUND 800 PM CDT.
  PORTAGE AND POYNETTE AROUND 805 PM CDT.
  PARDEEVILLE AND WESTFIELD AROUND 815 PM CDT.
  MONTELLO AROUND 825 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
BRIGGSVILLE...ENDEAVOR AND GLEN OAK.

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 1100 PM CDT SUNDAY EVENING
FOR SOUTHEASTERN WISCONSIN.

LAT...LON 4388 8918 4387 8920 4382 8920 4380 8918
      4377 8918 4377 8924 4364 8924 4335 8928
      4328 9004 4365 8987 4365 8960 4398 8959
      4398 8918
TIME...MOT...LOC 0041Z 246DEG 43KT 4351 8992
WIND...HAIL 60MPH 1.00IN

$$

KUHLMAN

3 follow-up statements

115 
WWUS53 KMKX 110059
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
759 PM CDT SUN APR 10 2011

WIC021-077-111-110130-
/O.CON.KMKX.SV.W.0021.000000T0000Z-110411T0130Z/
COLUMBIA WI-MARQUETTE WI-SAUK WI-
759 PM CDT SUN APR 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
SAUK...MARQUETTE AND WESTERN COLUMBIA COUNTIES UNTIL 830 PM CDT...

AT 753 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN 
EXCESS OF 60 MPH.  THESE STORMS ARE LOCATED FROM NEAR LELAND IN SAUK 
COUNTY...TO NEAR HARRISVILLE IN MARQUETTE COUNTY...MOVING NORTHEAST 
AT 50 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  PORTAGE AND POYNETTE AROUND 805 PM CDT.
  PARDEEVILLE AND WESTFIELD AROUND 815 PM CDT.
  MONTELLO AROUND 825 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE
BRIGGSVILLE...ENDEAVOR AND GLEN OAK.

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.

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.

&&

LAT...LON 4398 8918 4382 8920 4377 8918 4377 8924
      4364 8924 4335 8928 4329 8997 4364 8972
      4365 8960 4377 8960 4399 8941
TIME...MOT...LOC 0057Z 246DEG 43KT 4358 8968
WIND...HAIL 60MPH 0.75IN

$$

ZABEL

376 
WWUS53 KMKX 110112
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
812 PM CDT SUN APR 10 2011

WIC021-077-111-110130-
/O.CON.KMKX.SV.W.0021.000000T0000Z-110411T0130Z/
COLUMBIA WI-MARQUETTE WI-SAUK WI-
812 PM CDT SUN APR 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
SAUK...MARQUETTE AND WESTERN COLUMBIA COUNTIES UNTIL 830 PM CDT...

AT 806 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 FROM NEAR SAUK CITY...TO FAR WEST CENTRAL MARQUETTE 
COUNTY...MOVING NORTHEAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  PARDEEVILLE AROUND 815 PM CDT.
  MONTELLO AROUND 825 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE GLEN OAK.

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.

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.

&&

LAT...LON 4382 8920 4377 8918 4377 8924 4364 8924
      4335 8928 4330 8982 4377 8947 4398 8925
      4398 8918
TIME...MOT...LOC 0110Z 246DEG 43KT 4364 8948
WIND...HAIL 60MPH 1.00IN

$$
ZABEL

834 
WWUS53 KMKX 110128
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
828 PM CDT SUN APR 10 2011

WIC021-077-111-110138-
/O.EXP.KMKX.SV.W.0021.000000T0000Z-110411T0130Z/
COLUMBIA WI-MARQUETTE WI-SAUK WI-
828 PM CDT SUN APR 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SAUK...EASTERN
MARQUETTE AND WESTERN COLUMBIA COUNTIES WILL EXPIRE AT 830 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4382 8920 4377 8918 4377 8924 4364 8924
      4335 8928 4330 8982 4377 8947 4398 8925
      4398 8918
TIME...MOT...LOC 0128Z 246DEG 43KT 4372 8921

$$

ZABEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:05 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	40 min
Apr 10, 8:09 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Green Lake	51 min
Apr 10, 8:23 PM CDT	Tornado Warning	MKX	Fond du Lac, Green Lake	22 min
Apr 10, 10:05 PM CDT	Special Marine Warning	MKX		94 min
Apr 10, 10:21 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Waukesha	24 min
Apr 10, 10:34 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Milwaukee, Racine, Walworth	26 min

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.