Alert archive / Kentucky / Tornado Watches in 2013

Tornado Watch 15

January 30, 201363 counties in Kentucky

The Storm Prediction Center issued this tornado watch at Jan 30, 2013, 3:35 AM CST for 63 counties in Kentucky. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jan 30, 2013, 3:35 AM CST (09:35 UTC)
Expired
Jan 30, 2013, 7:14 AM CST
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 63 counties

Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Green County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Laurel County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Mason County, KY, McCreary County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 87 km from the middle of the area, began a volume at 09:35 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
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
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jan 30, 3:38 AM CSTSevere Thunderstorm WarningLMKAllen, Barren, Monroe, Warren32 min
Jan 30, 3:48 AM CSTSevere Thunderstorm WarningLMKHardin, Hart, Larue, Nelson32 min
Jan 30, 3:54 AM CSTSevere Thunderstorm WarningLMKBarren, Edmonson, Hart31 min
Jan 30, 4:05 AM CSTSevere Thunderstorm WarningILNGrant, Owen25 min
Jan 30, 4:05 AM CSTTornado WarningLMKHenry20 min
Jan 30, 4:06 AM CSTSevere Thunderstorm WarningLMKAdair, Barren, Cumberland, Green, Hart, Metcalfe and 2 more39 min
Jan 30, 4:09 AM CSTSevere Thunderstorm WarningLMKFranklin, Shelby31 min
Jan 30, 4:11 AM CSTSevere Thunderstorm WarningILNBoone, Carroll, Gallatin, Grant34 min
Jan 30, 4:11 AM CSTSevere Thunderstorm WarningLMKAnderson, Franklin, Nelson, Shelby, Spencer49 min
Jan 30, 4:11 AM CSTTornado WarningLMKAdair, Cumberland, Metcalfe29 min
Jan 30, 4:14 AM CSTSevere Thunderstorm WarningLMKGreen, Larue, Marion, Mercer, Nelson, Taylor and 1 more51 min
Jan 30, 4:30 AM CSTSevere Thunderstorm WarningLMKAdair, Casey, Clinton, Cumberland, Metcalfe, Russell and 1 more40 min
Jan 30, 4:41 AM CSTSevere Thunderstorm WarningLMKBoyle, Casey, Marion, Taylor29 min
Jan 30, 4:44 AM CSTSevere Thunderstorm WarningJKLPulaski, Wayne46 min
Jan 30, 4:49 AM CSTSevere Thunderstorm WarningILNBoone, Campbell, Grant, Kenton, Owen, Pendleton26 min
Jan 30, 4:53 AM CSTTornado WarningLMKAdair, Casey, Russell32 min
Jan 30, 4:56 AM CSTSevere Thunderstorm WarningLMKAnderson, Bourbon, Fayette, Harrison, Jessamine, Mercer and 2 more39 min
Jan 30, 4:57 AM CSTTornado WarningLMKBoyle, Casey, Garrard, Lincoln, Marion33 min
Jan 30, 5:07 AM CSTSevere Thunderstorm WarningLMKCasey, Garrard, Lincoln28 min
Jan 30, 5:22 AM CSTSevere Thunderstorm WarningJKLLaurel, McCreary, Pulaski, Rockcastle, Wayne, Whitley53 min
Jan 30, 5:22 AM CSTTornado WarningLMKGarrard, Madison28 min
Jan 30, 5:28 AM CSTTornado WarningJKLLaurel, Pulaski, Rockcastle32 min
Jan 30, 5:30 AM CSTSevere Thunderstorm WarningLMKBourbon, Clark, Fayette, Harrison, Jessamine, Madison and 1 more40 min
Jan 30, 5:37 AM CSTSevere Thunderstorm WarningLMKGarrard, Madison28 min
Jan 30, 5:40 AM CSTTornado WarningLMKBourbon, Clark20 min
Jan 30, 5:41 AM CSTSevere Thunderstorm WarningJKLEstill, Jackson, Lee, Menifee, Montgomery, Owsley and 3 more49 min
Jan 30, 5:42 AM CSTSevere Thunderstorm WarningJKLBath, Fleming, Menifee, Montgomery, Rowan48 min
Jan 30, 5:50 AM CSTSevere Thunderstorm WarningJKLClay, Jackson, Laurel, Owsley, Rockcastle40 min
Jan 30, 6:04 AM CSTSevere Thunderstorm WarningJKLClay, Knox, Laurel, McCreary, Whitley41 min
Jan 30, 6:15 AM CSTTornado WarningJKLMenifee, Montgomery, Powell30 min
Jan 30, 6:26 AM CSTSevere Thunderstorm WarningJKLBath, Elliott, Menifee, Morgan, Rowan49 min
Jan 30, 6:28 AM CSTSevere Thunderstorm WarningJKLBreathitt, Lee, Magoffin, Menifee, Morgan, Owsley and 3 more47 min
Jan 30, 6:30 AM CSTSevere Thunderstorm WarningJKLBell, Breathitt, Clay, Harlan, Jackson, Knott and 6 more45 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

Nashville Metro, TN (KBNA), launched 00:00Z, 9.6 hours before the alert went out and 186 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 2013-01-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 91 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 00:00Z on 2013-01-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 345 square meters per square second.1939587897Sfc1 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
91 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
520 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
345 m²/s²
0-3 km storm-relative helicity
364 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

529 
WWUS20 KWNS 300938
SEL5  
SPC WW 300938
KYZ000-301700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 15
NWS STORM PREDICTION CENTER NORMAN OK
435 AM EST WED JAN 30 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       CENTRAL AND EASTERN KENTUCKY

EFFECTIVE THIS WEDNESDAY MORNING FROM 435 AM UNTIL NOON EST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 75 MILES WEST SOUTHWEST OF
LONDON KENTUCKY TO 35 MILES NORTH OF LEXINGTON KENTUCKY.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

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 12...WW 13...WW 14...

DISCUSSION...A QLCS WITH EMBEDDED LEWP STRUCTURES WILL CONTINUE EWD
ACROSS THE WATCH AREA EARLY THIS MORNING.  WHILE THE AIR MASS IS
EXPECTED TO REMAIN ONLY VERY WEAKLY UNSTABLE...THE PRESENCE OF
STRONG FORCING FOR ASCENT AND INTENSE LOW-LEVEL AND DEEP-LAYER SHEAR
WILL PROMOTE IN-LINE MESO-VORTICES WITH AN ATTENDANT THREAT FOR
DAMAGING WINDS AND PERHAPS A TORNADO OR TWO.

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 300.
MEAN STORM MOTION VECTOR 22045.


...MEAD

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 29, 6:08 PM CSTMesoscale DiscussionSPCClay, Daviess, Fountain, Gibson, Greene, Knox and 13 more2 hr
Jan 29, 9:19 PM CSTMesoscale DiscussionSPCBartholomew, Brown, Clark, Clay, Crawford, Daviess and 30 more86 min
Jan 29, 9:35 PM CSTTornado WatchSPCBartholomew, Boone, Brown, Carroll, Clark, Clay and 46 more6 hr
Jan 29, 11:05 PM CSTMesoscale DiscussionSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 37 more85 min
Jan 30, 12:45 AM CSTMesoscale DiscussionSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more60 min
Jan 30, 2:33 AM CSTMesoscale DiscussionSPCBartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 15 more57 min
Jan 29, 7:13 PM CSTTornado WatchSPCBallard, Carlisle, Fulton, Graves, Hickman, McCracken6 hr
Jan 29, 9:49 PM CSTMesoscale DiscussionSPCCalloway, Fulton116 min
Jan 30, 4:51 AM CSTTornado WatchSPCBath, Bell, Boyd, Breathitt, Carter, Clay and 31 more7 hr
Jan 30, 6:38 AM CSTMesoscale DiscussionSPCBell, Boyd, Breathitt, Carter, Clay, Elliott and 21 more97 min

Nearby

Tornado Watches in Kentucky, 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.