Alert archive / Kentucky / Flash Flood Watches in 2015

Flash Flood Watch 1, NWS Louisville, KY

April 2, 201549 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this flash flood watch at Apr 2, 2015, 10:59 AM CDT for 49 counties in Kentucky; 10 counties in Indiana. It took effect at Apr 2, 2015, 7:00 PM CDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Apr 2, 2015, 10:59 AM CDT (15:59 UTC)
In effect from: Apr 2, 2015, 7:00 PM CDT
Expired: Apr 3, 2015, 6:41 PM CDT
In force: 24 hr
Issued by: NWS Louisville, KY
Flood severity: None

All 59 counties

Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 43 km from the middle of the area, began a volume at 16:01 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

Nashville Metro, TN (KBNA), launched 12:00Z, 4.0 hours before the alert went out and 205 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: 114 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1203 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 193 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 watch went out at Apr 2, 10:28 AM CDT, 31 minutes earlier.

Area forecast discussion, Apr 2, 10:28 AM CDT, 31 minutes before

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Hazardous weather outlook, Apr 2, 3:03 AM CDT, 7 hours 56 minutes before

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In the hours before

Special weather statement, Apr 2, 8:40 AM CDT, 2 hours 19 minutes before

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Special weather statement, Apr 2, 9:08 AM CDT, 1 hour 51 minutes before

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Special weather statement, Apr 2, 9:40 AM CDT, 1 hour 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
940 AM CDT THU APR 2 2015

KYZ064>066-076-077-021510-
ADAIR KY-CASEY KY-GREEN KY-METCALFE KY-TAYLOR KY-
940 AM CDT THU APR 2 2015

...STRONG THUNDERSTORMS WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND
40 MPH WINDS...

AT 938 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST OF
GREENSBURG TO EDMONTON TO 8 MILES SOUTHWEST OF EDMONTON...AND MOVING
NORTHEAST AT 45 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY RAIN REDUCING
VISIBILITIES...AND GUSTY WINDS OF AROUND 35 TO 45 MPH...ARE EXPECTED
WITH THESE STORMS.

* THESE STORMS WILL ALSO IMPACT...
  EDMONTON...
  COLUMBIA...
  ROMINE AND BURDICK...
  MILLTOWN AND WEED...
  YUMA AND ATCHISON...
  SPECK AND FEATHERSBURG...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3688 8574 3699 8565 3725 8547 3746 8490
      3723 8508 3701 8529 3689 8555 3686 8574
TIME...MOT...LOC 1440Z 243DEG 37KT 3720 8542 3704 8554
          3689 8568

RJS

Special weather statement, Apr 2, 9:47 AM CDT, 1 hour 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1047 AM EDT THU APR 2 2015

INZ090-091-KYZ030-021505-
FLOYD IN-HARRISON IN-JEFFERSON KY-
1047 AM EDT THU APR 2 2015

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND
HALF INCH HAIL...

AT 1041 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR CORYDON...AND MOVING NORTHEAST AT 45 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY RAIN REDUCING
VISIBILITIES...AND HALF INCH HAIL...ARE EXPECTED WITH THIS STORM.

* THIS STORM WILL ALSO IMPACT...
  SHIVELY...
  NEW ALBANY...
  CORYDON...
  LANESVILLE AND GEORGETOWN...
  EDWARDSVILLE AND FLOYDS KNOBS...

THIS STORM WILL AFFECT INTERSTATE 65 IN KENTUCKY BETWEEN MILE MARKERS
133 AND 134.

THIS STORM WILL AFFECT INTERSTATE 64 IN KENTUCKY BETWEEN MILE MARKERS
1 AND 3.

THIS STORM WILL AFFECT INTERSTATE 64 IN INDIANA BETWEEN MILE MARKERS
105 AND 123.

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 3821 8575 3809 8618 3823 8625 3841 8586
      3840 8585
TIME...MOT...LOC 1447Z 247DEG 44KT 3820 8608

RJS

Special weather statement, Apr 2, 10:10 AM CDT, 49 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1110 AM EDT THU APR 2 2015

INZ091-KYZ030-021530-
FLOYD IN-JEFFERSON KY-
1110 AM EDT THU APR 2 2015

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND
UP TO HALF INCH HAIL...

AT 1102 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR PLEASURE RIDGE PARK...AND MOVING EAST AT
45 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY RAIN REDUCING
VISIBILITIES...AND UP TO HALF INCH HAIL...ARE EXPECTED WITH THIS
STORM.

* THIS STORM WILL ALSO IMPACT...
  ST. MATTHEWS...
  SHIVELY...
  LYNDON...
  LOUISVILLE...
  JEFFERSONTOWN...
  LOUISVILLE INTERNATIONAL AIRPORT...
  LOUISVILLE BOWMAN FIELD...

THIS STORM WILL AFFECT INTERSTATE 65 IN KENTUCKY BETWEEN MILE MARKERS
131 AND 137.

THIS STORM WILL AFFECT INTERSTATE 64 IN KENTUCKY BETWEEN MILE MARKERS
10 AND 8.

THIS STORM WILL AFFECT INTERSTATE 71 IN KENTUCKY BETWEEN MILE MARKERS
1 AND 9.

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 3815 8550 3817 8590 3818 8590 3819 8593
      3823 8594 3827 8576 3827 8574 3828 8572
      3833 8555
TIME...MOT...LOC 1509Z 263DEG 38KT 3820 8582

RJS

Special weather statement, Apr 2, 10:28 AM CDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1128 AM EDT THU APR 2 2015

KYZ030-031-034-021600-
JEFFERSON KY-OLDHAM KY-SHELBY KY-
1128 AM EDT THU APR 2 2015

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND
UP TO HALF INCH HAIL...

AT 1118 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR LOUISVILLE...AND MOVING EAST AT 40 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY RAIN REDUCING
VISIBILITIES...AND UP TO HALF INCH HAIL...ARE EXPECTED WITH THIS
STORM.

* THIS STORM WILL ALSO IMPACT...
  ST. MATTHEWS...
  LYNDON...
  LOUISVILLE...
  JEFFERSONTOWN...
  FERN CREEK...
  FISHERVILLE AND FLOYDSBURG...
  CONNER AND L S PARK...
  SIMPSONVILLE AND MONTCLAIR...
  JOYES AND FINCHVILLE...

THIS STORM WILL AFFECT INTERSTATE 65 IN KENTUCKY BETWEEN MILE MARKERS
131 AND 137.

THIS STORM WILL AFFECT INTERSTATE 64 IN KENTUCKY BETWEEN MILE MARKERS
10 AND 8.

THIS STORM WILL AFFECT INTERSTATE 71 IN KENTUCKY BETWEEN MILE MARKERS
1 AND 9.

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 3814 8523 3816 8576 3827 8576 3827 8574
      3830 8569 3836 8530
TIME...MOT...LOC 1528Z 266DEG 34KT 3821 8561

RJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 2:51 AM CDT	Flood Watch	LMK	Anderson, Bourbon, Breckinridge, Bullitt, Fayette, Franklin and 16 more	8 hr
Apr 2, 7:26 AM CDT	Special Weather Statement	LMK	Simpson	29 min
Apr 2, 7:39 AM CDT	Special Weather Statement	LMK	Clark	21 min
Apr 2, 7:40 AM CDT	Special Weather Statement	LMK	Butler	30 min
Apr 2, 8:08 AM CDT	Special Weather Statement	LMK	Butler	32 min
Apr 2, 8:13 AM CDT	Special Weather Statement	LMK	Hart	27 min
Apr 2, 8:40 AM CDT	Special Weather Statement	LMK	Green, Marion, Metcalfe, Taylor	30 min
Apr 2, 9:08 AM CDT	Special Weather Statement	LMK	Adair, Boyle, Marion, Mercer, Metcalfe, Taylor	32 min
Apr 2, 9:40 AM CDT	Special Weather Statement	LMK	Adair, Metcalfe	30 min
Apr 2, 10:10 AM CDT	Special Weather Statement	LMK	Jefferson	20 min
Apr 2, 10:28 AM CDT	Special Weather Statement	LMK	Jefferson	32 min
Apr 2, 11:15 AM CDT	Special Weather Statement	LMK	Anderson, Franklin	20 min
Apr 2, 1:19 PM CDT	Severe Thunderstorm Warning	LMK	Meade	46 min
Apr 2, 2:00 PM CDT	Severe Thunderstorm Warning	LMK	Jefferson, Oldham	45 min
Apr 2, 2:09 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hancock	31 min
Apr 2, 2:33 PM CDT	Severe Thunderstorm Warning	LMK	Jefferson	52 min
Apr 2, 2:46 PM CDT	Special Weather Statement	LMK	Breckinridge, Meade	29 min
Apr 2, 2:59 PM CDT	Severe Thunderstorm Warning	LMK	Jefferson, Oldham, Shelby	51 min
Apr 2, 3:06 PM CDT	Severe Thunderstorm Warning	LMK	Bullitt, Hardin, Meade	29 min
Apr 2, 3:20 PM CDT	Areal Flood Advisory	LMK	Breckinridge, Bullitt, Hardin, Henry, Jefferson, Meade and 3 more	3 hr
Apr 2, 3:25 PM CDT	Severe Thunderstorm Warning	LMK	Franklin, Henry, Shelby	25 min
Apr 2, 3:33 PM CDT	Severe Thunderstorm Warning	LMK	Bullitt, Hardin, Jefferson, Nelson, Spencer	37 min
Apr 2, 3:41 PM CDT	Special Weather Statement	LMK	Butler, Logan	29 min
Apr 2, 3:57 PM CDT	Severe Thunderstorm Warning	LMK	Anderson, Mercer, Nelson, Spencer, Washington	43 min
Apr 2, 3:58 PM CDT	Severe Thunderstorm Warning	LMK	Butler, Edmonson, Grayson, Logan, Warren	32 min
Apr 2, 4:08 PM CDT	Areal Flood Advisory	LMK	Anderson, Franklin, Harrison, Nelson, Scott, Shelby and 3 more	3 hr
Apr 2, 4:08 PM CDT	Special Weather Statement	LMK	Bourbon, Fayette, Harrison, Nicholas, Scott, Woodford	92 min
Apr 2, 4:13 PM CDT	Special Weather Statement	LMK	Butler, Logan	27 min
Apr 2, 4:22 PM CDT	Severe Thunderstorm Warning	LMK	Logan, Simpson, Warren	28 min
Apr 2, 4:33 PM CDT	Areal Flood Advisory	LMK	Anderson, Bourbon, Fayette, Harrison, Jessamine, Mercer and 4 more	3 hr
Apr 2, 4:42 PM CDT	Special Weather Statement	LMK	Edmonson, Logan, Simpson, Warren	28 min
Apr 2, 4:53 PM CDT	Special Weather Statement	LMK	Allen	27 min
Apr 2, 5:11 PM CDT	Special Weather Statement	LMK	Allen, Barren, Hart, Monroe	44 min
Apr 2, 5:17 PM CDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark, Nicholas	18 min
Apr 2, 5:36 PM CDT	Special Weather Statement	LMK	Adair, Cumberland, Green, Metcalfe, Monroe, Taylor	44 min
Apr 2, 6:03 PM CDT	Special Weather Statement	LMK	Ohio	32 min
Apr 2, 6:09 PM CDT	Special Weather Statement	LMK	Adair, Clinton, Cumberland, Russell	31 min
Apr 2, 6:15 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Clinton, Cumberland, Russell	30 min
Apr 2, 6:31 PM CDT	Special Weather Statement	LMK	Breckinridge	29 min
Apr 2, 6:56 PM CDT	Special Weather Statement	LMK	Butler	19 min
Apr 2, 6:15 AM CDT	Special Weather Statement	LMK	Jefferson	20 min
Apr 2, 9:47 AM CDT	Special Weather Statement	LMK	Floyd, Harrison	18 min
Apr 2, 1:15 PM CDT	Special Weather Statement	LMK	Crawford, Perry	30 min

Nearby

Flash Flood Watches in Kentucky, 2015 Flash Flood Watches in Indiana, 2015 Every flash flood watch in 2015

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.