Alert archive / Kentucky / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 198, NWS Louisville, KY

October 19, 20074 counties in Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Oct 19, 2007, 12:07 AM EDT for 4 counties in Kentucky. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 19, 2007, 12:07 AM EDT (04:07 UTC)
Expired
Oct 19, 2007, 12:30 AM EDT
In force
23 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon

Counties Franklin County, KY, Henry County, KY, Scott County, KY, Shelby County, KY

The radar

The Louisville radar (KLVX), 95 km from the middle of the area, began a volume at 04:10 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 18, 10:22 PM EDTTornado WatchSPC5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.1 hours before the alert went out and 160 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, Cncnati-Daytn, OH at 00:00Z on 2007-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 807 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, Cncnati-Daytn, OH at 00:00Z on 2007-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 246 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
807 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
958 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
246 m²/s²
0-3 km storm-relative helicity
317 m²/s²
Significant tornado parameter
1.4
Supercell composite
5.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 18, 11:18 PM EDT, 49 minutes earlier.

Area forecast discussion, Oct 18, 11:18 PM EDT, 49 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOUISVILLE KY
1118 PM EDT THU OCT 18 2007

.MESOSCALE UPDATE...

SEVERE EVENT CONTINUES ACROSS THE REGION TONIGHT.  LINE OF SEVERE
THUNDERSTORMS CONTINUES TO MOVE ACROSS THE REGION.  WITHIN THE LINE
WE HAVE BEEN DETECTING SMALL MESO VORTICES THAT COULD CAUSE A BRIEF
TORNADO AND/OR EXTREME WIND DAMAGE.

CONVECTION IS NOW APPROACHING THE I-65 CORRIDOR AND WILL SPREAD
EASTWARD ACROSS THE REMAINDER OF THE FA OVERNIGHT. MAIN CONCERN
NORTH OF THE WESTERN KY AND BLUEGRASS PARKWAYS WILL BE MAINLY
DAMAGING WINDS AND THESE SMALL MESO VORTICIES WITHIN THE LINE.

SOUTH OF THE PARKWAY...SEVERE WEATHER WILL BE A BIT MORE LIKELY WITH
DAMAGING WINDS AND ISOLATED TORNADO POSSIBLE.  WITH THE BETTER SHEAR
AND MORE AVAILABLE MOISTURE...SUPERCELL STRUCTURES ARE STILL
PREVELENT IN THIS AREA.

FOR AREAS IN THE EAST...LIKE THE LEXINGTON METRO...THIS WEATHER WILL
IN AFTER MIDNIGHT...MORE LIKELY IN THE 1-3 AM EDT CORRIDOR.

WE ENCOURAGE PEOPLE TO LEAVE THEIR WEATHER RADIO ON DURING THE
OVERNIGHT HOURS TO KEEP ABREAST OF THE LATEST WARNINGS.

-JARVIS

&&

.LONG TERM (FRI THRU THU)...

WELL BE PUTTING ALL OUR RESOURCES INTO THE POTENTIAL WIDESPREAD
SEVERE EVENT LATER TODAY AND TONIGHT...AND HENCEFORTH WILL BE MAKING
NO OR JUST SUBTLE CHANGES IN THIS PERIOD. STILL LOOKS LIKE A WARM
WEEKEND...TRENDING SIGNIFICANTLY COOLER AT THE START OF THE NEW
WORKWEEK WITH NEXT SIGNIFICANT CHANCE OF RAIN ON MONDAY.

DK

&&
.AVIATION (00Z TAFS):...
DEALING WITH SUPERCELLS FOR THE SHORT TERM ...ESPECIALLY SDF VCNTY.
LATER TONIGHT HAVE TO DEAL WITH LIKELY SQUALL LINE OF TSTMS MOVING
WEST TO EAST ACROSS FA STARTING 4-6Z SDF AND 7-9Z LEX. WILL GO WI
SCT TO BKN SC DEVELOPING FRIDAY MORNING ACROSS NRN KY WITH OUR
REGION BEING ON THE SOUTHERN FRINGES OF THE WRAP AROUND CLOUDINESS
ASSOCIATED WITH DEEP LOW WELL TO OUR NORTH. --21
&&

LMK WATCHES/WARNINGS/ADVISORIES...
KY...NONE.
IN...NONE.
&&
Hazardous weather outlook, Oct 18, 11:06 PM EDT, 1 hour 1 minute before
HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE LOUISVILLE KY
1106 PM EDT THU OCT 18 2007

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-190830-
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-
CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-HANCOCK KY-
BRECKINRIDGE KY-MEADE KY-OHIO KY-GRAYSON KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-
SCOTT KY-HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-
FAYETTE KY-BOURBON KY-NICHOLAS KY-NELSON KY-WASHINGTON KY-
MERCER KY-JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-BOYLE KY-
GARRARD KY-MADISON KY-BUTLER KY-EDMONSON KY-HART KY-GREEN KY-
TAYLOR KY-CASEY KY-LINCOLN KY-LOGAN KY-WARREN KY-SIMPSON KY-
ALLEN KY-BARREN KY-MONROE KY-METCALFE KY-ADAIR KY-RUSSELL KY-
CUMBERLAND KY-CLINTON KY-
1106 PM EDT THU OCT 18 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
INDIANA AND CENTRAL KENTUCKY.

.DAY ONE...TONIGHT.

...TORNADO WATCH IN EFFECT UNTIL MIDNIGHT EDT FOR ALL OF
SOUTH-CENTRAL INDIANA AND UNTIL 5 AM EDT FOR MOST OF CENTRAL
KENTUCKY...

A SQUALL LINE WILL MOVE EAST ACROSS SOUTH CENTRAL INDIANA AND
CENTRAL KENTUCKY TONIGHT. THE STORMS SHOULD MOVE OUT OF SOUTH
CENTRAL INDIANA BY MIDNIGHT AND MOVE ACROSS CENTRAL KENTUCKY BETWEEN
11 PM AND 5 AM EDT. THE MAIN THREAT FROM THESE SEVERE THUNDERSTORMS
WILL BE DAMAGING STRAIGHT LINE WINDS ALONG WITH DANGEROUS LIGHTNING
AND HEAVY DOWNPOURS. ISOLATED TORNADOES AND LARGE HAIL WILL ALSO BE
POSSIBLE WITH SOME OF THESE STORMS TONIGHT.

SINCE THESE SEVERE STORMS ARE EXPECTED TO AFFECT THE OUTLOOK AREA AT
NIGHT...WE HIGHLY ENCOURAGE YOU TO SET YOUR NOAA WEATHER RADIO TO
ALERT MODE SO THAT YOU CAN BE AWAKENED IN THE EVENT THAT A WARNING
IS ISSUED WHILE YOU ARE ASLEEP. MANY SEVERE WEATHER FATALITIES OCCUR
LATE AT NIGHT.

OUTSIDE OF ALL THUNDERSTORM ACTIVITY...SOUTHERLY WINDS ARE EXPECTED
TO BE VERY GUSTY TONIGHT. GUSTS NEAR 30 MPH WILL BE POSSIBLE ACROSS
THE ENTIRE OUTLOOK REGION...SO MOTORISTS SHOULD USE CAUTION ON
WEST-TO-EAST ROADWAYS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

WIDELY SCATTERED THUNDERSTORMS WILL BE POSSIBLE AGAIN NEXT MONDAY
AND TUESDAY AS ANOTHER SYSTEM MOVES EAST INTO THE OHIO VALLEY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS AND EMERGENCY MANAGERS SHOULD KEEP WATCH FOR SEVERE WEATHER
THIS EVENING INTO THE OVERNIGHT HOURS...AND REPORT ANY SIGNIFICANT
HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE.

AML/DK/MBS

In the hours before

Local storm report, Oct 18, 11:44 PM EDT, 23 minutes before
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Local storm report, Oct 18, 11:44 PM EDT, 23 minutes before
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Special weather statement, Oct 18, 11:51 PM EDT, 16 minutes before
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Local storm report, Oct 18, 11:58 PM EDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1158 PM EDT THU OCT 18 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1158 PM     TSTM WND GST     BOWLING GREEN           36.97N 86.44W
10/18/2007  E65 MPH          WARREN             KY   TRAINED SPOTTER

&&

LD
Local storm report, Oct 19, 12:02 AM EDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1202 AM EDT FRI OCT 19 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 AM     HAIL             CANEYVILLE              37.42N 86.49W
10/19/2007  E1.00 INCH       GRAYSON            KY   PUBLIC

&&

LD
Local storm report, Oct 19, 12:02 AM EDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1202 AM EDT FRI OCT 19 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1136 PM     HAIL             CANEYVILLE              37.42N 86.49W
10/18/2007  E1.00 INCH       GRAYSON            KY   PUBLIC

&&

LD

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 18, 8:11 PM EDTTornado WarningLMKMeade34 min
Oct 18, 8:12 PM EDTTornado WarningLMKBreckinridge, Hancock33 min
Oct 18, 9:31 PM EDTTornado WarningLMKHancock29 min
Oct 18, 9:31 PM EDTTornado WarningLMKOhio29 min
Oct 18, 9:58 PM EDTTornado WarningLMKBreckinridge, Grayson, Ohio32 min
Oct 18, 9:59 PM EDTSevere Thunderstorm WarningLMKOldham21 min
Oct 18, 10:16 PM EDTSevere Thunderstorm WarningLMKTrimble29 min
Oct 18, 10:29 PM EDTSevere Thunderstorm WarningLMKBreckinridge, Hardin, Meade31 min
Oct 18, 10:41 PM EDTTornado WarningLMKBreckinridge, Hardin, Meade23 min
Oct 18, 10:48 PM EDTTornado WarningLMKButler, Ohio27 min
Oct 18, 10:51 PM EDTSevere Thunderstorm WarningLMKBreckinridge, Grayson, Ohio39 min
Oct 18, 11:02 PM EDTSevere Thunderstorm WarningLMKBullitt, Jefferson28 min
Oct 18, 11:08 PM EDTSevere Thunderstorm WarningLMKLogan37 min
Oct 18, 11:15 PM EDTTornado WarningLMKButler30 min
Oct 18, 11:35 PM EDTSevere Thunderstorm WarningLMKLogan, Simpson, Warren40 min
Oct 18, 11:37 PM EDTSevere Thunderstorm WarningLMKGrayson38 min
Oct 18, 11:43 PM EDTSevere Thunderstorm WarningLMKBullitt, Jefferson, Shelby, Spencer32 min
Oct 19, 12:02 AM EDTSevere Thunderstorm WarningLMKButler, Edmonson, Warren28 min
Oct 19, 12:51 AM EDTSevere Thunderstorm WarningLMKGreen, Hart, Larue, Taylor24 min
Oct 19, 1:17 AM EDTSevere Thunderstorm WarningLMKMarion, Taylor, Washington28 min
Oct 19, 1:27 AM EDTSevere Thunderstorm WarningLMKBarren, Metcalfe, Monroe20 min
Oct 19, 1:47 AM EDTSevere Thunderstorm WarningLMKBoyle, Marion, Mercer, Washington28 min
Oct 19, 1:55 AM EDTSevere Thunderstorm WarningLMKBourbon, Clark, Fayette, Scott35 min
Oct 19, 2:14 AM EDTSevere Thunderstorm WarningLMKClark, Fayette, Garrard, Jessamine, Lincoln, Madison and 1 more31 min
Oct 19, 2:29 AM EDTSevere Thunderstorm WarningLMKBourbon, Clark, Nicholas31 min
Oct 19, 2:47 AM EDTSevere Thunderstorm WarningLMKClark, Madison13 min
Oct 18, 8:46 PM EDTSevere Thunderstorm WarningLMKClark, Floyd, Harrison, Washington29 min
Oct 18, 8:56 PM EDTTornado WarningLMKHarrison34 min
Oct 18, 8:59 PM EDTSevere Thunderstorm WarningLMKDubois46 min
Oct 18, 9:23 PM EDTTornado WarningLMKClark, Floyd37 min
Oct 18, 9:25 PM EDTTornado WarningLMKDubois24 min
Oct 18, 9:41 PM EDTTornado WarningLMKCrawford, Orange34 min
Oct 18, 10:15 PM EDTTornado WarningLMKOrange, Washington30 min
Oct 18, 10:44 PM EDTTornado WarningLMKFloyd, Harrison16 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2007Every severe thunderstorm warning in 2007

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.