Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 65, NWS Milwaukee, WI

July 26, 20124 counties in Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 26, 2012, 12:10 AM CDT for 4 counties in Wisconsin. It was in force for 35 min. 3 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: Jul 26, 2012, 12:10 AM CDT (05:10 UTC)
Expired: Jul 26, 2012, 12:45 AM CDT
In force: 35 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Columbia County, WI, Dane County, WI, Green County, WI, Rock County, WI

The radar

The Milwaukee radar (KMKX), 93 km from the middle of the area, began a volume at 05:13 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
Jul 26, 12:33 AM CDT	TSTM WND GST 64	Monroe Airport, WI
Jul 26, 12:45 AM CDT	TSTM WND GST 51	Lodi, WI
Jul 26, 12:45 AM CDT	TSTM WND GST 55	Lodi, 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
Jul 25, 6:38 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 5.2 hours before the alert went out and 183 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: 2643 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1451 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 16.9

Open this sounding in Storm Lab

The text

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

998 
WUUS53 KMKX 260510
SVRMKX
WIC021-025-045-105-260545-
/O.NEW.KMKX.SV.W.0065.120726T0510Z-120726T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1210 AM CDT THU JUL 26 2012

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN...
  DANE COUNTY IN SOUTH CENTRAL WISCONSIN...
  GREEN COUNTY IN SOUTH CENTRAL WISCONSIN...
  WESTERN ROCK COUNTY IN SOUTH CENTRAL WISCONSIN...

* UNTIL 1245 AM CDT

* AT 1209 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM WEST BARABOO TO WINSLOW...
  AND MOVING EAST AT 70 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOUNT HOREB...MONROE...LAKE WISCONSIN...VERONA...MIDDLETON...
  PORTAGE...WAUNAKEE...FITCHBURG...MADISON CAPITOL SQUARE...OREGON...
  BRODHEAD...DE FOREST...WINDSOR...MONONA...MCFARLAND...EVANSVILLE...
  SUN PRAIRIE...STOUGHTON...MARSHALL AND EDGERTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!

THIS IS AN EXTREMELY DANGEROUS SITUATION WITH TORNADO LIKE WIND
SPEEDS EXPECTED. MOBILE HOMES AND HIGH PROFILE VEHICLES ARE
ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS MAGNITUDE AND MAY BE
OVERTURNED. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS. THESE STORMS HAVE THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 4252 8984 4319 8983 4327 8972 4330 8973
      4333 8969 4338 8960 4352 8959 4356 8961
      4357 8966 4364 8978 4365 8978 4363 8902
      4251 8902
TIME...MOT...LOC 0510Z 269DEG 61KT 4348 8978 4254 8980
WIND...HAIL 70MPH 1.00IN

$$

REM

1 follow-up statement

526 
WWUS53 KMKX 260522
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1222 AM CDT THU JUL 26 2012

WIC021-025-045-105-260545-
/O.CON.KMKX.SV.W.0065.000000T0000Z-120726T0545Z/
COLUMBIA WI-DANE WI-GREEN WI-ROCK WI-
1222 AM CDT THU JUL 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
ROCK...GREEN...DANE AND COLUMBIA COUNTIES UNTIL 1245 AM CDT...

AT 1218 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 8 MILES NORTHWEST OF PORTAGE TO
MONROE...MOVING EAST AT 65 MPH.

IN ADDITION...SEVERE WINDS OF 63 MPH WERE RECORDED AT THE LONE ROCK 
AIRPORT WITH THESE STORMS.

SEVERE THUNDERSTORMS WILL BE NEAR...
  I90/94 INTERCHANGE...MADISON TRUAX AIRPORT...WINDSOR AND
  PARDEEVILLE AROUND 1230 AM CDT.
  SUN PRAIRIE...STOUGHTON...RIO AND ORFORDVILLE AROUND 1235 AM CDT.
  JANESVILLE AIRPORT...MARSHALL...FALL RIVER AND EDGERTON AROUND 1240
  AM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE TOKEN
CREEK...MORRISONVILLE...MAGNOLIA...WYOCENA...UNION...OTSEGO...
NEWARK...EAST BRISTOL...COOKSVILLE AND DOYLESTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4252 8984 4319 8983 4327 8972 4330 8973
      4333 8969 4338 8960 4352 8959 4356 8961
      4357 8966 4364 8978 4365 8978 4363 8902
      4251 8902
TIME...MOT...LOC 0521Z 269DEG 58KT 4365 8949 4255 8954
WIND...HAIL 70MPH 1.00IN

$$

WOOD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 8:26 PM CDT	Special Marine Warning	MKX		64 min
Jul 25, 9:34 PM CDT	Severe Thunderstorm Warning	MKX	Iowa	26 min
Jul 25, 9:51 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette	32 min
Jul 25, 11:20 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette	40 min
Jul 25, 11:39 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	51 min
Jul 25, 11:39 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Washington	21 min
Jul 25, 11:52 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette, Sauk	38 min
Jul 26, 12:00 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac	30 min
Jul 26, 12:35 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Jefferson, Rock, Walworth, Waukesha	70 min
Jul 26, 12:41 AM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	49 min
Jul 26, 12:53 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Green, Rock	37 min
Jul 26, 1:13 AM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Sheboygan	32 min
Jul 26, 1:24 AM CDT	Special Marine Warning	MKX		96 min
Jul 26, 1:26 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Kenosha, Milwaukee, Ozaukee, Racine and 4 more	64 min
Jul 26, 2:20 PM CDT	Special Marine Warning	MKX		85 min
Jul 26, 2:47 PM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	28 min
Jul 26, 2:56 PM CDT	Severe Thunderstorm Warning	MKX	Ozaukee, Washington	34 min
Jul 26, 3:03 PM CDT	Special Marine Warning	MKX		72 min
Jul 26, 3:38 PM CDT	Special Marine Warning	MKX		2 hr
Jul 26, 3:46 PM CDT	Special Marine Warning	MKX		44 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.