Alert archive / Kentucky / Tornado Watches in 2013

Tornado Watch 554

October 31, 20134 states

The Storm Prediction Center issued this tornado watch at Oct 31, 2013, 5:24 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Oct 31, 2013, 5:24 PM CDT (22:24 UTC)
Expired
Oct 31, 2013, 11:53 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
70 kt
All 118 counties

Alexander County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Marion County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bartholomew County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN, Ballard County, KY, Breckinridge County, KY, Bullitt 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, Hardin County, KY, Henderson County, KY, Henry County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Shelby County, KY, Spencer County, KY, Todd County, KY, Trigg County, KY, Trimble County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO

The radar

The Paducah radar (KPAH), 100 km from the middle of the area, began a volume at 22:26 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
20%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
5%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 31, 6:01 PM CDTSevere Thunderstorm WarningPAHWayne29 min
Oct 31, 6:10 PM CDTSevere Thunderstorm WarningPAHButler, Ripley35 min
Oct 31, 6:43 PM CDTSevere Thunderstorm WarningPAHButler, Stoddard47 min
Oct 31, 7:00 PM CDTSevere Thunderstorm WarningPAHUnion30 min
Oct 31, 7:06 PM CDTSevere Thunderstorm WarningPAHAlexander, Pulaski24 min
Oct 31, 7:08 PM CDTSevere Thunderstorm WarningPAHJackson37 min
Oct 31, 7:11 PM CDTSevere Thunderstorm WarningILXCrawford49 min
Oct 31, 7:14 PM CDTTornado WarningPAHAlexander31 min
Oct 31, 7:16 PM CDTTornado WarningPAHNew Madrid, Scott, Stoddard29 min
Oct 31, 7:27 PM CDTSevere Thunderstorm WarningPAHJackson, Johnson, Saline, Union, Williamson48 min
Oct 31, 7:41 PM CDTTornado WarningPAHMississippi, Scott34 min
Oct 31, 7:50 PM CDTTornado WarningPAHJohnson, Pope, Saline, Williamson25 min
Oct 31, 8:03 PM CDTTornado WarningPAHJohnson, Massac, Pope27 min
Oct 31, 8:05 PM CDTSevere Thunderstorm WarningPAHAlexander40 min
Oct 31, 8:08 PM CDTTornado WarningPAHBallard, Carlisle37 min
Oct 31, 8:15 PM CDTSevere Thunderstorm WarningPAHGallatin, Saline30 min
Oct 31, 8:21 PM CDTSevere Thunderstorm WarningPAHCarlisle, Graves39 min
Oct 31, 8:23 PM CDTTornado WarningPAHBallard, Carlisle, McCracken37 min
Oct 31, 8:26 PM CDTTornado Warning Tornado observedPAHGallatin, Hardin34 min
Oct 31, 8:34 PM CDTSevere Thunderstorm WarningINDBoone, Hamilton, Hancock, Hendricks, Johnson, Madison and 3 more41 min
Oct 31, 8:39 PM CDTSevere Thunderstorm WarningPAHMassac, Pope51 min
Oct 31, 8:42 PM CDTTornado WarningPAHGraves, McCracken33 min
Oct 31, 8:43 PM CDTSevere Thunderstorm WarningINDBartholomew, Brown, Jackson, Jennings, Johnson, Lawrence and 4 more47 min
Oct 31, 8:52 PM CDTTornado WarningPAHLivingston, Lyon, Marshall23 min
Oct 31, 9:08 PM CDTSevere Thunderstorm WarningINDDecatur, Delaware, Hancock, Henry, Randolph, Rush and 1 more52 min
Oct 31, 9:08 PM CDTTornado WarningPAHSpencer, Warrick37 min
Oct 31, 9:14 PM CDTSevere Thunderstorm WarningPAHCaldwell, Crittenden, Livingston, Lyon, Marshall, Trigg31 min
Oct 31, 9:26 PM CDTSevere Thunderstorm WarningPAHCalloway, Graves, Marshall, Trigg34 min
Oct 31, 9:31 PM CDTSevere Thunderstorm WarningINDDecatur, Jackson, Jennings44 min
Oct 31, 9:39 PM CDTSevere Thunderstorm WarningPAHCaldwell, Christian, Hopkins, Trigg36 min
Oct 31, 9:40 PM CDTSevere Thunderstorm WarningLMKPerry30 min
Oct 31, 9:51 PM CDTSevere Thunderstorm WarningPAHChristian39 min
Oct 31, 9:56 PM CDTSevere Thunderstorm WarningPAHMcLean, Muhlenberg, Todd49 min
Oct 31, 10:14 PM CDTSevere Thunderstorm WarningLMKClark, Floyd, Harrison31 min
Oct 31, 10:18 PM CDTSevere Thunderstorm WarningLMKButler, Grayson, Ohio42 min

Discussions around it

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.4 hours before the alert went out and 244 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, Lincoln, IL at 12:00Z on 2013-10-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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, Lincoln, IL at 12:00Z on 2013-10-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939587897117Sfc1 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
3 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
652 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
51 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.

486 
WWUS20 KWNS 312224
SEL4  
SPC WW 312224
ILZ000-INZ000-KYZ000-MOZ000-010600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 554
NWS STORM PREDICTION CENTER NORMAN OK
525 PM CDT THU OCT 31 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

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

* EFFECTIVE THIS THURSDAY AFTERNOON AND FRIDAY MORNING FROM 525
  PM UNTIL 100 AM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES POSSIBLE
  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 80
    MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST NORTHWEST OF
POPLAR BLUFF MISSOURI TO 55 MILES NORTH NORTHEAST OF LOUISVILLE
KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 552...WW 553...

DISCUSSION...THUNDERSTORMS ARE SLOWLY INTENSIFYING OVER SOUTHEAST
MO.  THESE STORMS ARE EXPECTED TO ORGANIZE AND SPREAD NORTHEASTWARD
ACROSS THE WATCH AREA THIS EVENING.  WHILE THE AREAL COVERAGE OF
SEVERE WEATHER IS NOT EXPECTED TO BE LARGE...EXTREMELY STRONG WIND
FIELDS MAY COMPENSATE FOR WEAK INSTABILITY AND POSE A RISK OF AN
ISOLATED SIGNIFICANT WIND GUST OR TORNADO.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 25040.


...HART

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 31, 12:31 PM CDTMesoscale DiscussionSPCBaxter, Boone, Carroll, Clay, Cleburne, Fulton and 12 more89 min
Oct 31, 5:01 PM CDTMesoscale DiscussionSPCAlexander, Clay, Crawford, Edwards, Franklin, Gallatin and 20 more89 min
Oct 31, 2:54 PM CDTSevere Thunderstorm WatchSPCDent, Douglas, Howell, Oregon, Ozark, Shannon and 3 more3 hr

Nearby

Tornado Watches in Kentucky, 2013Tornado Watches in Indiana, 2013Tornado Watches in Illinois, 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.