Alert archive / Wisconsin / Tornado Warnings in 2009

Tornado Warning 16, NWS Milwaukee, WI

July 27, 2009Columbia County, Dodge County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jul 27, 2009, 6:39 PM CDT for Columbia County, Dodge County, Wisconsin. It was in force for 36 min. 2 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 27, 2009, 6:39 PM CDT (23:39 UTC)
Expired
Jul 27, 2009, 7:15 PM CDT
In force
36 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon

Counties Columbia County, WI, Dodge County, WI

The radar

The Milwaukee radar (KMKX), 69 km from the middle of the area, began a volume at 23:40 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

TimeReportWhereRemark
Jul 27, 6:44 PM CDTHAIL 0.88Cambria, WI
Jul 27, 6:55 PM CDTHAIL 1Cambria, WIQUARTER SIZE HAIL FROM CAMBRIA UP TO HWY 33

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.

IssuedProductOfficeLasted
Jul 27, 2:41 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.7 hours before the alert went out and 129 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2009-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 74 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2009-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
74 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1153 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMKX 272339
TORMKX
WIC021-027-280045-
/O.NEW.KMKX.TO.W.0016.090727T2339Z-090728T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
639 PM CDT MON JUL 27 2009

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN
  NORTHWESTERN DODGE COUNTY IN SOUTHEAST WISCONSIN

* UNTIL 745 PM CDT

* AT 637 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR CAMBRIA...OR 15 MILES EAST OF PORTAGE...AND
  MOVING SOUTHEAST AT 15 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  5 MILES SOUTHWEST OF FRIESLAND BY 645 PM CDT...
  CAMBRIA BY 650 PM CDT...
  5 MILES SOUTHWEST OF RANDOLPH BY 705 PM CDT...
  4 MILES NORTHEAST OF FALL RIVER BY 730 PM CDT...

IN ADDITION TO THE TORNADO...THIS STORM IS EXPECTED TO PRODUCE
1.5 INCH SIZED HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

LAT...LON 4351 8880 4336 8903 4351 8921 4363 8902
TIME...MOT...LOC 2339Z 320DEG 13KT 4357 8916

$$

GEHRING
2 follow-up statements
000 
WWUS53 KMKX 272357
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
657 PM CDT MON JUL 27 2009

WIC021-027-280045-
/O.CON.KMKX.TO.W.0016.000000T0000Z-090728T0045Z/
COLUMBIA WI-DODGE WI-
657 PM CDT MON JUL 27 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
NORTHWESTERN DODGE AND NORTHEASTERN COLUMBIA COUNTIES...

AT 656 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION. THIS POSSIBLE TORNADO WAS 
LOCATED NEAR CAMBRIA...OR 13 MILES WEST OF BEAVER DAM...MOVING 
SOUTHEAST AT 15 MPH.

THE POSSIBLE TORNADO WILL BE NEAR...
RANDOLPH BY 705 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING HALF 
DOLLAR SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

&&

LAT...LON 4351 8880 4336 8903 4351 8921 4363 8902
TIME...MOT...LOC 2357Z 310DEG 14KT 4352 8909

$$

MBK
000 
WWUS53 KMKX 280015
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
715 PM CDT MON JUL 27 2009

WIC021-027-280025-
/O.CAN.KMKX.TO.W.0016.000000T0000Z-090728T0045Z/
COLUMBIA WI-DODGE WI-
715 PM CDT MON JUL 27 2009

...THE TORNADO WARNING FOR NORTHWESTERN DODGE AND NORTHEASTERN
COLUMBIA COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARS TO BE SEVERE...HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL
POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM CDT.

LAT...LON 4351 8880 4336 8903 4351 8921 4363 8902
TIME...MOT...LOC 0015Z 310DEG 14KT 4348 8902

$$

MBK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 4:22 PM CDTSevere Thunderstorm WarningMKXMarquette83 min
Jul 27, 5:04 PM CDTTornado WarningMKXMarquette71 min
Jul 27, 5:57 PM CDTTornado WarningMKXColumbia, Green Lake, Marquette63 min
Jul 27, 6:02 PM CDTTornado WarningMKXIowa, Sauk73 min
Jul 27, 6:13 PM CDTTornado WarningMKXDodge, Fond du Lac, Washington40 min
Jul 27, 6:15 PM CDTFlash Flood WarningMKXIowa, Sauk3 hr
Jul 27, 6:59 PM CDTSevere Thunderstorm WarningMKXIowa, Lafayette61 min

Nearby

Tornado Warnings in Wisconsin, 2009Every tornado warning in 2009Tornadoes in 2009

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.