Alert archive / Kentucky / Flash Flood Warnings in 2010

Flash Flood Warning 26, NWS Louisville, KY

June 21, 2010Clark County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jun 21, 2010, 12:51 PM EDT for Clark County, Kentucky. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 21, 2010, 12:51 PM EDT (16:51 UTC)
Expired: Jun 21, 2010, 3:45 PM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

County Clark County, KY

The radar

The Jackson,KY radar (KJKL), 85 km from the middle of the area, began a volume at 16:51 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.9 hours before the alert went out and 165 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: 535 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jun 21, 12:49 PM EDT, 2 minutes earlier.

Area forecast discussion, Jun 21, 12:49 PM EDT, 2 minutes before

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Hazardous weather outlook, Jun 21, 11:43 AM EDT, 1 hour 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
1143 AM EDT MON JUN 21 2010

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
212100-
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-
1143 AM EDT MON JUN 21 2010 /1043 AM CDT MON JUN 21 2010/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A CHANCE FOR THUNDERSTORMS THIS AFTERNOON AND EARLY
EVENING...SOME OF WHICH COULD BECOME BRIEFLY SEVERE. HEAVY
RAINFALL...DAMAGING WINDS...AND CLOUD TO GROUND LIGHTNING WILL BE
THE MAIN THREATS WITH THESE THUNDERSTORMS.

IN ADDITION...HIGH TEMPERATURES IN THE LOW TO MID 90S COMBINED
WITH HIGH RELATIVE HUMIDITY WILL ALLOW FOR HEAT INDEX VALUES TO
RANGE FROM 98 TO 103. WITH HEAT INDICES THIS HIGH...TAKE THE PROPER
PRECAUTIONS TO AVOID HEAT-RELATED ILLNESSES BY DRINKING PLENTY OF
FLUIDS...MINIMIZING STRENUOUS PHYSICAL ACTIVITY...AND AVOIDING
PROLONGED EXPOSURE TO DIRECT SUNLIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE COMBINATION OF HIGH TEMPERATURES IN THE MID 90S AND HIGH
HUMIDITY VALUES WILL RESULT IN HEAT INDICES FROM NEAR 100 TO
105...MAINLY DURING THE AFTERNOON AND EARLY EVENING HOURS TUESDAY
AND WEDNESDAY. WITH HEAT INDICES THIS HIGH...TAKE THE PROPER
PRECAUTIONS TO AVOID HEAT-RELATED ILLNESSES BY DRINKING PLENTY OF
FLUIDS...MINIMIZING STRENUOUS PHYSICAL ACTIVITY...AND AVOIDING
PROLONGED EXPOSURE TO DIRECT SUNLIGHT.

IN ADDITION...THERE ARE SLIGHT CHANCES OF THUNDERSTORMS TUESDAY
AND WEDNESDAY AFTERNOONS...WITH BETTER WIDESPREAD THUNDERSTORM
CHANCES LATE WEDNESDAY NIGHT THROUGH THURSDAY AS A COOL FRONT
APPROACHES AND PASSES THROUGH THE REGION TO THE SOUTH. ANY
THUNDERSTORM WILL BRING BRIEF HEAVY RAIN...STRONG GUSTY WINDS AND
CLOUD TO GROUND LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT DAMAGING WINDS...HAIL...AND
HEAVY RAINFALL TO THE NATIONAL WEATHER SERVICE OFFICE IN
LOUISVILLE THIS AFTERNOON AND EVENING.

KYZ070>078-081-082-212100-
LOGAN KY-WARREN KY-SIMPSON KY-ALLEN KY-BARREN KY-MONROE KY-
METCALFE KY-ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY-
1043 AM CDT MON JUN 21 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL KENTUCKY.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HIGH TEMPERATURES IN THE LOW TO MID 90S COMBINED WITH HIGH RELATIVE
HUMIDITY WILL ALLOW FOR HEAT INDEX VALUES TO RISE BETWEEN 100-104
DEGREES. WITH HEAT INDICES THIS HIGH...TAKE THE PROPER PRECAUTIONS
TO AVOID HEAT- RELATED ILLNESSES BY DRINKING PLENTY OF
FLUIDS...MINIMIZING STRENUOUS PHYSICAL ACTIVITY...AND AVOIDING
PROLONGED EXPOSURE TO DIRECT SUNLIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE COMBINATION OF HIGH TEMPERATURES IN THE MID 90S AND HIGH
HUMIDITY VALUES WILL RESULT IN HEAT INDICES FROM NEAR 100 TO
105...MAINLY DURING THE AFTERNOON AND EARLY EVENING HOURS TUESDAY
AND WEDNESDAY. WITH HEAT INDICES THIS HIGH...TAKE THE PROPER
PRECAUTIONS TO AVOID HEAT-RELATED ILLNESSES BY DRINKING PLENTY OF
FLUIDS...MINIMIZING STRENUOUS PHYSICAL ACTIVITY...AND AVOIDING
PROLONGED EXPOSURE TO DIRECT SUNLIGHT.

IN ADDITION...CHANCES FOR THUNDERSTORMS WILL INCREASE LATE
WEDNESDAY NIGHT THROUGH THURSDAY AS A COOL FRONT APPROACHES AND
PASSES THROUGH THE REGION TO THE SOUTH. ANY THUNDERSTORM WILL
BRING BRIEF HEAVY RAIN...STRONG GUSTY WINDS AND CLOUD TO GROUND
LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

MJ/AL/BJS

In the hours before

Special weather statement, Jun 21, 11:55 AM EDT, 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1155 AM EDT MON JUN 21 2010

KYZ049-211645-
CLARK-
1155 AM EDT MON JUN 21 2010

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...SMALL
HAIL...AND GUSTY WINDS WILL AFFECT CLARK COUNTY.

AT 1151 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR WINCHESTER...AND MOVING EAST AT 10 TO 15
MPH.

CONTINUOUS CLOUD TO GROUND LIGHTNING...HEAVY RAIN WITH RAINFALL RATES
OF AROUND ONE INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE
MILE...SMALL PEA OR DIME SIZE HAIL...AND GUSTY WINDS OF AROUND 35 TO
40 MPH...ARE EXPECTED WITH THIS STORM.

THIS STORM WILL AFFECT INTERSTATE 64 IN KENTUCKY BETWEEN MILE MARKERS
101 AND 98.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...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.

&&

LAT...LON 3792 8400 3788 8400 3787 8401 3793 8431
      3807 8429 3810 8415 3809 8407 3795 8398
      3793 8398
TIME...MOT...LOC 1555Z 278DEG 10KT 3800 8418

MJ

Special weather statement, Jun 21, 12:03 PM EDT, 48 minutes before

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE LOUISVILLE KY
1203 PM EDT MON JUN 21 2010

KYZ049-211645-
CLARK-
1203 PM EDT MON JUN 21 2010

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...SMALL
HAIL...AND GUSTY WINDS WILL AFFECT CLARK COUNTY...

AT 1151 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR WINCHESTER...AND MOVING EAST AT 10 TO 15
MPH.

CONTINUOUS CLOUD TO GROUND LIGHTNING...HEAVY RAIN WITH RAINFALL RATES
OF AROUND ONE INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE
MILE...SMALL PEA OR DIME SIZE HAIL...AND GUSTY WINDS OF AROUND 35 TO
40 MPH...ARE EXPECTED WITH THIS STORM.

THIS STORM WILL AFFECT INTERSTATE 64 IN KENTUCKY BETWEEN MILE MARKERS
101 AND 98.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...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.

&&

LAT...LON 3792 8400 3788 8400 3787 8401 3793 8431
      3807 8429 3810 8415 3809 8407 3795 8398
      3793 8398
TIME...MOT...LOC 1555Z 278DEG 10KT 3800 8418

MJ

Special weather statement, Jun 21, 12:39 PM EDT, 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1239 PM EDT MON JUN 21 2010

INZ079-KYZ032-211715-
JEFFERSON-TRIMBLE-
1239 PM EDT MON JUN 21 2010

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...SMALL
HAIL...AND GUSTY WINDS...

AT 1236 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 8 MILES NORTHWEST OF MADISON...AND MOVING
SOUTHEAST AT 25 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY RAIN WITH RAINFALL RATES
OF AROUND ONE INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE
MILE...SMALL PEA OR DIME SIZE HAIL...AND GUSTY WINDS OF AROUND 35 TO
40 MPH...ARE EXPECTED WITH THIS STORM.

THIS STORM WILL ALSO IMPACT...
   MADISON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...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.

&&

LAT...LON 3874 8520 3870 8520 3869 8522 3874 8527
      3874 8532 3867 8527 3858 8543 3882 8565
      3884 8563 3885 8563 3893 8544 3892 8534
TIME...MOT...LOC 1639Z 330DEG 21KT 3880 8551

NF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 11:55 AM EDT	Special Weather Statement	LMK	Clark	50 min
Jun 21, 12:03 PM EDT	Special Weather Statement	LMK	Clark	42 min
Jun 21, 1:24 PM EDT	Special Weather Statement	LMK	Franklin	36 min
Jun 21, 1:25 PM EDT	Special Weather Statement	LMK	Franklin	35 min
Jun 21, 1:26 PM EDT	Special Weather Statement	LMK	Henry	34 min
Jun 21, 1:44 PM EDT	Areal Flood Advisory	LMK	Harrison, Nicholas	3 hr
Jun 21, 1:44 PM EDT	Flash Flood Warning	LMK	Franklin	2 hr
Jun 21, 1:52 PM EDT	Special Weather Statement	LMK	Franklin, Harrison, Nicholas, Scott	38 min
Jun 21, 1:59 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison	31 min
Jun 21, 2:19 PM EDT	Severe Thunderstorm Warning	LMK	Fayette	26 min
Jun 21, 2:30 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark	30 min
Jun 21, 2:31 PM EDT	Areal Flood Advisory	LMK	Fayette	19 min
Jun 21, 2:44 PM EDT	Flash Flood Warning	LMK	Fayette	76 min
Jun 21, 2:48 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Madison	42 min
Jun 21, 3:13 PM EDT	Flash Flood Warning	LMK	Clark, Madison	83 min
Jun 21, 3:41 PM EDT	Special Weather Statement	LMK	Madison	34 min
Jun 20, 8:01 PM EDT	Special Weather Statement	LMK	Scott	44 min
Jun 21, 12:39 PM EDT	Special Weather Statement	LMK	Jefferson	36 min
Jun 21, 6:26 PM EDT	Special Weather Statement	LMK	Crawford	34 min
Jun 21, 6:37 PM EDT	Severe Thunderstorm Warning	LMK	Crawford	23 min
Jun 21, 6:58 PM EDT	Severe Thunderstorm Warning	LMK	Crawford	32 min
Jun 21, 7:43 PM EDT	Special Weather Statement	LMK	Crawford	32 min

Nearby

Flash Flood Warnings in Kentucky, 2010 Every flash flood warning in 2010

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.