Alert archive / Kentucky / Tornado Watches in 2013

Tornado Watch 542

October 5, 201314 counties in Illinois; 6 counties in Indiana; 22 counties in Kentucky

The Storm Prediction Center issued this tornado watch at Oct 5, 2013, 8:42 PM CDT for 14 counties in Illinois; 6 counties in Indiana; 22 counties in Kentucky. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Oct 5, 2013, 8:42 PM CDT (01:42 UTC)
Expired
Oct 6, 2013, 2:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 42 counties

Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard 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, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY

The radar

The Paducah radar (KPAH), 63 km from the middle of the area, began a volume at 01:42 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
30%
One or more gusts of 65 knots or more
5%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 5, 10:36 PM CDTFlash Flood WarningPAHMassac6 hr
Oct 5, 11:19 PM CDTSevere Thunderstorm WarningPAHPosey, Spencer, Vanderburgh, Warrick41 min
Oct 5, 11:27 PM CDTFlash Flood WarningPAHGibson, Posey, Vanderburgh3 hr
Oct 5, 11:49 PM CDTTornado WarningPAHPike, Spencer, Warrick26 min
Oct 6, 12:14 AM CDTSevere Thunderstorm WarningPAHPike, Warrick16 min
Oct 6, 12:24 AM CDTFlash Flood WarningPAHCrittenden, Henderson, Livingston, Webster6 hr
Oct 6, 12:53 AM CDTFlash Flood WarningPAHSpencer6 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 00:00Z, 1.7 hours before the alert went out and 220 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 00:00Z on 2013-10-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 930 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2013-10-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
930 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1467 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 5, 10:53 PM CDTMesoscale DiscussionSPCVanderburgh97 min
Oct 5, 11:49 PM CDTMesoscale DiscussionSPCClark, Crawford, Floyd, Harrison, Perry56 min
Oct 6, 1:32 AM CDTMesoscale DiscussionSPCBartholomew, Clark, Crawford, Dearborn, Decatur, Fayette and 15 more58 min
Oct 5, 7:01 PM CDTMesoscale DiscussionSPCAnderson, Boyle, Breckinridge, Bullitt, Butler, Calloway and 27 more119 min
Oct 6, 12:27 PM CDTMesoscale DiscussionSPCAdair, Bath, Boyd, Breathitt, Carter, Casey and 30 more3 hr
Oct 6, 2:04 PM CDTMesoscale DiscussionSPCBoone, Bracken, Campbell, Grant, Harrison, Kenton and 4 more116 min

Nearby

Tornado Watches in Kentucky, 2013Tornado Watches in Illinois, 2013Tornado Watches in Indiana, 2013Every tornado watch in 2013

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.