Alert archive / Kentucky / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 99, NWS Louisville, KY

April 10, 2009Ohio County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Apr 10, 2009, 12:34 PM CDT for Ohio County, Kentucky. It was in force for 26 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: Apr 10, 2009, 12:34 PM CDT (17:34 UTC)
Expired: Apr 10, 2009, 1:00 PM CDT
In force: 26 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon

County Ohio County, KY

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 10, 8:53 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.6 hours before the alert went out and 152 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1414 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Apr 10, 11:51 AM CDT, 43 minutes earlier.

Area forecast discussion, Apr 10, 11:51 AM CDT, 43 minutes before

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Hazardous weather outlook, Apr 10, 12:23 PM CDT, 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
123 PM EDT FRI APR 10 2009

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-110930-
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-
123 PM EDT (1223 PM CDT) FRI APR 10 2009

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A STRONG WEATHER SYSTEM IS ENTERING WESTERN KENTUCKY THIS AFTERNOON.
AHEAD OF THIS SYSTEM...PERIODS OF SHOWERS AND THUNDERSTORMS ARE
EXPECTED TO MOVE ACROSS THE REGION.  ANY THUNDERSTORM WILL BE
CAPABLE OF PRODUCING LARGE HAIL...DAMAGING WINDS IN EXCESS OF 60
MPH...DANGEROUS CLOUD TO GROUND LIGHTNING AND ISOLATED TORNADOES.

AT THIS TIME...THE AREA UNDER HIGHEST RISK FOR SEVERE WEATHER IS
SOUTH CENTRAL KENTUCKY MAINLY SOUTH OF A LINE FROM HARTFORD IN OHIO
COUNTY TO RICHMOND IN MADISON COUNTY.  THE BEST TIME FOR SEVERE
WEATHER WILL BE FROM NOW THROUGH 600 PM EDT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

ANOTHER STORM SYSTEM WILL BRING A CHANCE OF THUNDERSTORMS LATE
SUNDAY NIGHT AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS REQUESTED THIS AFTERNOON ACROSS THE OUTLOOK
AREA. SPOTTERS AND EMERGENCY MANAGERS SHOULD MONITOR THE WEATHER
THIS AFTERNOON AND REPORT SEVERE WEATHER TO THE NATIONAL WEATHER
SERVICE IN LOUISVILLE AS SOON AS POSSIBLE.

STAY TUNED TO NOAA WEATHER RADIO OR WEATHER.GOV/LOUISVILLE FOR THE
LATEST UPDATES.

MJ

In the hours before

Local storm report, Apr 10, 11:48 AM CDT, 46 minutes before

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Special weather statement, Apr 10, 11:50 AM CDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1250 PM EDT FRI APR 10 2009

KYZ023-026-101715-
HANCOCK-OHIO-
1150 AM CDT FRI APR 10 2009

...STRONG STORM WILL MOVE ACROSS WESTERN OHIO AND SOUTHERN PERRY
COUNTIES...

AT 1148 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 6 MILES NORTH OF HARTFORD...OR 19 MILES
SOUTHEAST OF OWENSBORO...AND MOVING NORTHEAST AT 40 MPH.

HAIL TO THE SIZE OF NICKLES AND HEAVY RAIN ARE EXPECTED WITH THIS
STORM.

IF YOU ARE IN THE PATH OF THESE STORMS...SEEK SHELTER INDOORS AND
STAY AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO...
WEATHER.GOV/LOUISVILLE ON THE INTERNET...OR LOCAL MEDIA FOR LATER
UPDATES AND POSSIBLE WARNINGS.

LS

Special weather statement, Apr 10, 12:02 PM CDT, 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
102 PM EDT FRI APR 10 2009

KYZ047-055-066-067-101730-
BOYLE-CASEY-LINCOLN-MERCER-
102 PM EDT FRI APR 10 2009

...THUNDERSTORMS PRODUCING PEA TO DIME SIZE HAIL AND HEAVY RAIN...

AT 1256 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
THUNDERSTORMS ALONG A LINE FROM 9 MILES EAST OF SPRINGFIELD TO 12
MILES SOUTHEAST OF LEBANON...AND MOVING NORTHEAST AT 40 MPH.

OCCASIONAL LIGHTNING...VERY HEAVY RAINFALL...AND PEA TO NICKEL SIZE
HAIL WILL OCCUR WITH THESE STORMS.

THESE STORMS WILL BE...
  NEAR HARRODSBURG BY 120 PM EDT.
  NEAR DANVILLE BY 125 PM EDT.

TWF

Local storm report, Apr 10, 12:13 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
113 PM EDT FRI APR 10 2009

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

0110 PM     HAIL             BEDA                    37.50N  86.95W
04/10/2009  E0.50 INCH       OHIO               KY   EMERGENCY MNGR

            HAIL IS COVERING THE GROUND

&&

EVENT NUMBER LMK0900372

RL

Local storm report, Apr 10, 12:25 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
125 PM EDT FRI APR 10 2009

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

0120 PM     HAIL             PARKSVILLE              37.60N  84.90W
04/10/2009  E1.75 INCH       BOYLE              KY   TRAINED SPOTTER

            GOLF BALL SIZED HAIL NEAR PARKSVILLE.

&&

EVENT NUMBER LMK0900373

JSD

Special weather statement, Apr 10, 12:29 PM CDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
129 PM EDT FRI APR 10 2009

KYZ041-042-101800-
BOURBON-FAYETTE-
129 PM EDT FRI APR 10 2009

...STRONG STORMS WILL MOVE OVER LEXINGTON TOWARDS BOURBON COUNTY...

AT 127 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR LEXINGTON...AND MOVING NORTHEAST AT 40 MPH.

FREQUENT DEADLY LIGHTNING...PENNY SIZE HAIL...AND GUSTY WINDS OF
AROUND 35 TO 45 MPH... ARE EXPECTED WITH THIS STORM.

THIS STORM WILL BE...
  NEAR PARIS BY 145 PM EDT.

IF YOU ARE IN THE PATH OF THESE STORMS...SEEK SHELTER INDOORS AND
STAY AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS
RADIO...WEATHER.GOV/LOUISVILLE ON THE INTERNET...OR LOCAL MEDIA FOR
LATER UPDATES AND POSSIBLE WARNINGS.

JSD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 10:20 AM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	25 min
Apr 10, 10:42 AM CDT	Severe Thunderstorm Warning	LMK	Jefferson	33 min
Apr 10, 10:46 AM CDT	Severe Thunderstorm Warning	LMK	Green, Hart, Larue, Taylor	29 min
Apr 10, 11:26 AM CDT	Severe Thunderstorm Warning	LMK	Marion, Taylor	34 min
Apr 10, 12:16 PM CDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Mercer	29 min
Apr 10, 12:48 PM CDT	Flash Flood Warning	LMK	Boyle, Garrard, Mercer	117 min
Apr 10, 12:52 PM CDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Jessamine, Mercer	23 min
Apr 10, 1:03 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	27 min
Apr 10, 1:18 PM CDT	Severe Thunderstorm Warning	LMK	Fayette, Garrard, Jessamine, Madison, Mercer	27 min
Apr 10, 1:20 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Monroe	25 min
Apr 10, 1:35 PM CDT	Tornado Warning	LMK	Butler, Ohio	25 min
Apr 10, 1:59 PM CDT	Tornado Warning	LMK	Butler, Ohio	21 min
Apr 10, 2:09 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Madison	36 min
Apr 10, 2:15 PM CDT	Tornado Warning	LMK	Clark, Madison	30 min
Apr 10, 2:23 PM CDT	Severe Thunderstorm Warning	LMK	Garrard, Jessamine	22 min
Apr 10, 2:25 PM CDT	Tornado Warning	LMK	Garrard, Lincoln, Madison	25 min
Apr 10, 2:47 PM CDT	Severe Thunderstorm Warning	LMK	Grayson, Hardin	28 min
Apr 10, 3:37 PM CDT	Areal Flood Advisory	LMK	Boyle, Casey, Clark, Fayette, Garrard, Jessamine and 6 more	83 min
Apr 10, 1:55 PM CDT	Severe Thunderstorm Warning	LMK	Clark	35 min
Apr 10, 5:43 PM CDT	Areal Flood Advisory	LMK	Dubois, Orange	2 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2009 Every severe thunderstorm warning in 2009

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.