Alert archive / Kentucky / Tornado Watches in 2016

Tornado Watch 317

July 3, 20164 states

The Storm Prediction Center issued this tornado watch at Jul 3, 2016, 2:24 PM CDT for 4 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jul 3, 2016, 2:24 PM CDT (19:24 UTC)
Expired
Jul 3, 2016, 10:00 PM CDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 67 counties

Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Johnson County, IL, Lawrence County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Richland County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Crawford County, IN, Daviess County, IN, Dubois County, IN, Gibson County, IN, Harrison County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Ballard County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Cape Girardeau County, MO, Mississippi County, MO, New Madrid County, MO, Scott County, MO

The radar

The Evansville,IN radar (KVWX), 25 km from the middle of the area, began a volume at 19:28 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
5%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jul 3, 2:41 PM CDTSevere Thunderstorm WarningPAHMassac, Pope49 min
Jul 3, 3:12 PM CDTSevere Thunderstorm WarningPAHEdwards, Wabash, White33 min
Jul 3, 3:30 PM CDTTornado WarningPAHWhite30 min
Jul 3, 3:57 PM CDTTornado WarningPAHCaldwell, Crittenden, Hopkins, Webster33 min
Jul 3, 4:02 PM CDTSevere Thunderstorm WarningPAHGibson, Posey, Vanderburgh28 min
Jul 3, 4:48 PM CDTTornado WarningPAHJohnson27 min
Jul 3, 4:52 PM CDTSevere Thunderstorm WarningLMKDubois23 min
Jul 3, 4:52 PM CDTSevere Thunderstorm WarningPAHFulton38 min
Jul 3, 4:56 PM CDTSevere Thunderstorm WarningPAHPike, Spencer, Warrick49 min
Jul 3, 5:15 PM CDTSevere Thunderstorm WarningLMKDubois45 min
Jul 3, 5:59 PM CDTSevere Thunderstorm WarningLMKHancock, Ohio31 min
Jul 3, 6:27 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Grayson, Ohio33 min
Jul 3, 6:50 PM CDTTornado WarningPAHCalloway25 min
Jul 3, 6:56 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Grayson, Hardin34 min
Jul 3, 7:01 PM CDTSevere Thunderstorm WarningLMKGrayson, Ohio29 min
Jul 3, 7:27 PM CDTTornado WarningLMKBreckinridge, Hardin18 min
Jul 3, 9:36 PM CDTFlash Flood WarningPAHCarlisle3 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.4 hours before the alert went out and 238 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, Nashville Metro, TN at 12:00Z on 2016-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 93 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2016-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
93 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1231 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

497 
WWUS20 KWNS 031923
SEL7  
SPC WW 031923
ILZ000-INZ000-KYZ000-MOZ000-040300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 317
NWS STORM PREDICTION CENTER NORMAN OK
225 PM CDT SUN JUL 3 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHERN ILLINOIS
  SOUTHWEST INDIANA
  WESTERN AND CENTRAL KENTUCKY
  SOUTHEAST MISSOURI

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 225 PM UNTIL
  1000 PM CDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
  ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE

SUMMARY...THUNDERSTORMS IN SHORT LINES AND CLUSTERS EXPECTED TO
FORM/INCREASE OVER WATCH AREA THROUGH THIS EVENING. SOME
STORMS...POTENTIALLY INCLUDING A FEW SUPERCELLS...COULD PRODUCE
LOCALLY DAMAGING WIND AND A COUPLE TORNADOES IN ADDITION TO VERY
HEAVY RAIN AND MARGINALLY SEVERE HAIL.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH NORTHEAST OF
EVANSVILLE INDIANA TO 40 MILES SOUTHEAST OF PADUCAH KENTUCKY. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 25025.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 1:45 PM CDTMesoscale DiscussionSPCEdwards, Gallatin, Hamilton, Hardin, Johnson, Lawrence and 6 more2 hr
Jul 3, 5:23 PM CDTMesoscale DiscussionSPCAlexander, Clay, Crawford, Edwards, Franklin, Gallatin and 19 more97 min
Jul 3, 2:51 PM CDTTornado WatchSPCAdair, Allen, Barren, Boyle, Casey, Clinton and 20 more7 hr
Jul 3, 3:17 PM CDTSevere Thunderstorm WatchSPCMcDonald, Newton8 hr

Nearby

Tornado Watches in Kentucky, 2016Tornado Watches in Illinois, 2016Tornado Watches in Indiana, 2016Every tornado watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.