Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 85, NWS Milwaukee, WI

September 25, 20164 counties in Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 25, 2016, 2:42 PM CDT for 4 counties in Wisconsin. It was in force for 33 min. 5 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
Sep 25, 2016, 2:42 PM CDT (19:42 UTC)
Expired
Sep 25, 2016, 3:15 PM CDT
In force
33 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Dane County, WI, Jefferson County, WI, Rock County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 30 km from the middle of the area, began a volume at 19:44 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
Sep 25, 2:44 PM CDTTSTM WND DMG2 Nne Milton, WILARGE TREE LIMBS AND BRANCHES DOWN BY THUNDERSTORM WINDS NEAR THE INTERSECTION OF HWY 26 AND COUNTY LINE ROAD. TIMING UPDATED BASED ON RADAR.
Sep 25, 2:49 PM CDTTSTM WND DMGMilton, WITWO TREES DOWNED BY THUNDERSTORM WIND GUSTS NEAR COUNTY LINE ROAD. TIME UPDATED BASED ON RADAR.
Sep 25, 2:55 PM CDTTSTM WND DMG4 Ssw Fort Atkinson, WIMULTIPLE TREES DOWN...SOME COVERING A ROAD NEAR LAKE KOSHKONONG.
Sep 25, 3:05 PM CDTTSTM WND DMG2 Nne Milton, WILARGE TREE LIMBS AND BRANCHES DOWN BY THUNDERSTORM WINDS NEAR THE INTERSECTION OF HWY 26 AND COUNTY LINE ROAD.
Sep 25, 3:05 PM CDTTSTM WND DMGN Milton, WITWO TREES DOWNED BY THUNDERSTORM WIND GUSTS NEAR COUNTY LINE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 7.7 hours before the alert went out and 190 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, Davenport, at 12:00Z on 2016-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 230 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, Davenport, at 12:00Z on 2016-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.1939Sfc1 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
230 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1111 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

364 
WUUS53 KMKX 251942
SVRMKX
WIC025-055-105-127-252015-
/O.NEW.KMKX.SV.W.0085.160925T1942Z-160925T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
242 PM CDT SUN SEP 25 2016

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN JEFFERSON COUNTY IN SOUTHEASTERN WISCONSIN...
  NORTHWESTERN WALWORTH COUNTY IN SOUTHEASTERN WISCONSIN...
  SOUTHEASTERN DANE COUNTY IN SOUTH CENTRAL WISCONSIN...
  NORTHEASTERN ROCK COUNTY IN SOUTH CENTRAL WISCONSIN...

* UNTIL 315 PM CDT

* AT 242 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER MILTON...
  MOVING NORTHEAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WHITEWATER...FORT ATKINSON...JEFFERSON...MILTON...EDGERTON...
  PALMYRA...LAKE KOSHKONONG...ROME...HEBRON...
  INDIANFORD AND HELENVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4272 8899 4281 8912 4307 8872 4286 8854
TIME...MOT...LOC 1942Z 238DEG 32KT 4279 8900 

HAIL...<.75IN
WIND...60MPH
 
$$

SPM
3 follow-up statements
606 
WWUS53 KMKX 251956
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
256 PM CDT SUN SEP 25 2016

WIC025-252006-
/O.CAN.KMKX.SV.W.0085.000000T0000Z-160925T2015Z/
DANE WI-
256 PM CDT SUN SEP 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DANE COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 4275 8891 4278 8898 4288 8901 4307 8872
      4286 8854
TIME...MOT...LOC 1956Z 238DEG 32KT 4286 8885 

$$

WIC055-105-127-252015-
/O.CON.KMKX.SV.W.0085.000000T0000Z-160925T2015Z/
JEFFERSON WI-WALWORTH WI-ROCK WI-
256 PM CDT SUN SEP 25 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR SOUTHERN JEFFERSON...NORTHWESTERN WALWORTH AND NORTHEASTERN ROCK
COUNTIES...

AT 256 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR FORT
ATKINSON... MOVING NORTHEAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WHITEWATER...FORT ATKINSON...JEFFERSON...MILTON...PALMYRA...LAKE
KOSHKONONG...ROME...HEBRON AND HELENVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4275 8891 4278 8898 4288 8901 4307 8872
      4286 8854
TIME...MOT...LOC 1956Z 238DEG 32KT 4286 8885 

HAIL...<.75IN
WIND...60MPH
 
$$

SPM
931 
WWUS53 KMKX 252000
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
300 PM CDT SUN SEP 25 2016

WIC055-105-127-252015-
/O.CON.KMKX.SV.W.0085.000000T0000Z-160925T2015Z/
JEFFERSON WI-WALWORTH WI-ROCK WI-
300 PM CDT SUN SEP 25 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR SOUTHERN JEFFERSON...NORTHWESTERN WALWORTH AND NORTHEASTERN ROCK
COUNTIES...

AT 300 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR FORT
ATKINSON... MOVING NORTHEAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WHITEWATER...FORT ATKINSON...JEFFERSON...PALMYRA...LAKE KOSHKONONG...
ROME...HEBRON AND HELENVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4281 8880 4283 8890 4294 8892 4307 8872
      4286 8854
TIME...MOT...LOC 2000Z 238DEG 32KT 4288 8881 

HAIL...<.75IN
WIND...60MPH
 
$$

SPM
089 
WWUS53 KMKX 252005
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
305 PM CDT SUN SEP 25 2016

WIC105-127-252014-
/O.CAN.KMKX.SV.W.0085.000000T0000Z-160925T2015Z/
WALWORTH WI-ROCK WI-
305 PM CDT SUN SEP 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WALWORTH AND
NORTHEASTERN ROCK COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 4285 8875 4286 8885 4291 8888 4307 8872
      4286 8854
TIME...MOT...LOC 2004Z 238DEG 32KT 4290 8877 

$$

WIC055-252015-
/O.CON.KMKX.SV.W.0085.000000T0000Z-160925T2015Z/
JEFFERSON WI-
305 PM CDT SUN SEP 25 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR SOUTHEASTERN JEFFERSON COUNTY...

AT 304 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR FORT
ATKINSON... MOVING NORTHEAST AT 35 MPH. AT 300 PM CDT...TWO TREES
WERE REPORTED DOWN NEAR MILTON.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WHITEWATER...FORT ATKINSON...PALMYRA...ROME...HEBRON AND HELENVILLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4285 8875 4286 8885 4291 8888 4307 8872
      4286 8854
TIME...MOT...LOC 2004Z 238DEG 32KT 4290 8877 

HAIL...<.75IN
WIND...60MPH
 
$$

SPM

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 25, 9:45 AM CDTRiver Flood WatchMKXSauk69 hr
Sep 25, 1:52 PM CDTSpecial Weather StatementMKXGreen23 min
Sep 25, 2:13 PM CDTSpecial Weather StatementMKXRock47 min
Sep 25, 2:22 PM CDTSevere Thunderstorm WarningMKXRock36 min
Sep 25, 3:11 PM CDTSevere Thunderstorm WarningMKXJefferson, Waukesha34 min
Sep 25, 3:35 PM CDTSpecial Weather StatementMKXDodge25 min
Sep 25, 3:38 PM CDTSpecial Weather StatementMKXWaukesha52 min
Sep 25, 3:52 PM CDTSpecial Marine WarningMKX83 min
Sep 25, 3:59 PM CDTSpecial Weather StatementMKXWashington46 min
Sep 25, 4:26 PM CDTSpecial Weather StatementMKXMilwaukee34 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2016Every severe thunderstorm warning in 2016

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.