Alert archive / Wisconsin / Tornado Warnings in 2017

Tornado Warning 4, NWS Milwaukee, WI

June 17, 2017Lafayette County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jun 17, 2017, 6:09 PM CDT for Lafayette County, Wisconsin. It was in force for 36 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
Jun 17, 2017, 6:09 PM CDT (23:09 UTC)
Expired
Jun 17, 2017, 6:45 PM CDT
In force
36 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Lafayette County, WI

The radar

The Milwaukee radar (KMKX), 128 km from the middle of the area, began a volume at 23:12 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 nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.2 hours before the alert went out and 126 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 2017-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 613 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 2017-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 square meters per square second.19395878Sfc1 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
613 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
726 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

561 
WFUS53 KMKX 172309
TORMKX
WIC065-172345-
/O.NEW.KMKX.TO.W.0004.170617T2309Z-170617T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
609 PM CDT SAT JUN 17 2017

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  Eastern Lafayette County in south central Wisconsin...

* Until 645 PM CDT

* At 609 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Darlington, moving east at 40 mph.

  HAZARD...Tornado. 

  SOURCE...Weather spotters reported funnel cloud. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Argyle around 620 PM CDT. 
  Blanchardville around 625 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Gratiot, Wiota, Somers, Yellowstone Lake St Park, Lamont and
Woodford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4275 9028 4282 9011 4281 8984 4258 8984
      4255 9015
TIME...MOT...LOC 2309Z 255DEG 36KT 4269 9003 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

HENTZ
2 follow-up statements
650 
WWUS53 KMKX 172327
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
627 PM CDT SAT JUN 17 2017

WIC065-172345-
/O.CON.KMKX.TO.W.0004.000000T0000Z-170617T2345Z/
Lafayette WI-
627 PM CDT SAT JUN 17 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN LAFAYETTE COUNTY...
        
At 627 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Darlington, moving east at 15 mph.

HAZARD...Tornado. 

SOURCE...Weather spotters reported a funnel cloud. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Argyle around 645 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Wiota,
Somers, Yellowstone Lake St Park, Lamont and Woodford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4272 9008 4278 9002 4281 8984 4260 8984
      4260 9002
TIME...MOT...LOC 2327Z 265DEG 14KT 4268 8999 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

DAVIS
399 
WWUS53 KMKX 172341
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
641 PM CDT SAT JUN 17 2017

WIC065-172350-
/O.EXP.KMKX.TO.W.0004.000000T0000Z-170617T2345Z/
Lafayette WI-
641 PM CDT SAT JUN 17 2017

...THE TORNADO WARNING FOR NORTHEASTERN LAFAYETTE COUNTY WILL EXPIRE
AT 645 PM CDT...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning will be allowed to expire.

LAT...LON 4272 9008 4278 9002 4281 8984 4260 8984
      4260 9002
TIME...MOT...LOC 2340Z 255DEG 36KT 4271 8981 

$$

DAVIS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 7:59 PM CDTSpecial Weather StatementMKXSauk46 min
Jun 16, 8:23 PM CDTSpecial Weather StatementMKXSheboygan37 min
Jun 16, 8:45 PM CDTSpecial Marine WarningMKX30 min
Jun 16, 9:05 PM CDTSpecial Weather StatementMKXMarquette55 min
Jun 16, 9:50 PM CDTSpecial Weather StatementMKXIowa55 min
Jun 16, 9:53 PM CDTSpecial Weather StatementMKXDane52 min
Jun 16, 10:03 PM CDTSevere Thunderstorm WarningMKXDane42 min
Jun 16, 10:14 PM CDTSpecial Weather StatementMKXGreen46 min
Jun 16, 10:32 PM CDTSevere Thunderstorm WarningMKXIowa, Lafayette43 min
Jun 16, 10:43 PM CDTSpecial Weather StatementMKXJefferson47 min
Jun 16, 10:45 PM CDTSevere Thunderstorm WarningMKXDane, Jefferson, Rock45 min
Jun 16, 11:03 PM CDTSpecial Weather StatementMKXDodge42 min
Jun 16, 11:12 PM CDTSpecial Weather StatementMKXLafayette48 min
Jun 16, 11:28 PM CDTSpecial Weather StatementMKXDane47 min
Jun 16, 11:49 PM CDTSpecial Weather StatementMKXDane26 min
Jun 16, 11:52 PM CDTSpecial Weather StatementMKXWashington23 min
Jun 17, 12:04 AM CDTSpecial Weather StatementMKXLafayette26 min
Jun 17, 12:26 AM CDTSpecial Weather StatementMKXGreen34 min
Jun 17, 12:49 AM CDTSpecial Weather StatementMKXJefferson26 min
Jun 17, 1:00 AM CDTSpecial Weather StatementMKXGreen30 min
Jun 17, 1:14 AM CDTSpecial Weather StatementMKXJefferson31 min
Jun 17, 1:26 AM CDTSpecial Weather StatementMKXRock34 min
Jun 17, 1:46 AM CDTSpecial Weather StatementMKXWaukesha29 min
Jun 17, 1:59 AM CDTSpecial Weather StatementMKXWalworth31 min
Jun 17, 2:25 AM CDTSpecial Weather StatementMKXWaukesha35 min
Jun 17, 2:49 AM CDTSpecial Weather StatementMKXKenosha, Milwaukee, Racine26 min
Jun 17, 3:03 AM CDTSpecial Marine WarningMKX57 min
Jun 17, 6:05 PM CDTSpecial Weather StatementMKXLafayette25 min
Jun 17, 6:21 PM CDTSpecial Weather StatementMKXMilwaukee24 min
Jun 17, 6:43 PM CDTSpecial Weather StatementMKXGreen, Rock32 min
Jun 17, 6:49 PM CDTSpecial Weather StatementMKXKenosha26 min

Nearby

Tornado Warnings in Wisconsin, 2017Every tornado warning in 2017Tornadoes in 2017

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.