Alert archive / Kentucky / Flash Flood Watches in 2014

Flash Flood Watch 5, NWS Louisville, KY

September 10, 201411 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this flash flood watch at Sep 10, 2014, 9:46 PM CDT for 11 counties in Kentucky; 10 counties in Indiana. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Sep 10, 2014, 9:46 PM CDT (02:46 UTC)
Expired: Sep 11, 2014, 5:56 AM CDT
In force: 8 hr
Issued by: NWS Louisville, KY
Flood severity: None

All 21 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, Breckinridge County, KY, Bullitt County, KY, Hancock County, KY, Hardin County, KY, Henry County, KY, Jefferson County, KY, Meade County, KY, Oldham County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY

The radar

The Louisville radar (KLVX), 32 km from the middle of the area, began a volume at 02:46 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 00:00Z, 2.8 hours before the alert went out and 226 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: 167 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 949 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 316 m²/s²
0-3 km storm-relative helicity: 419 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.0

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 Sep 10, 8:18 PM CDT, 1 hour 28 minutes earlier.

Area forecast discussion, Sep 10, 8:18 PM CDT, 1 hour 28 minutes before

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Hazardous weather outlook, Sep 10, 8:24 PM CDT, 1 hour 22 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 10, 10:33 PM CDT	Special Weather Statement	LMK	Trimble	32 min
Sep 10, 10:50 PM CDT	Severe Thunderstorm Warning	LMK	Trimble	30 min
Sep 10, 11:00 PM CDT	Special Weather Statement	LMK	Henry, Oldham, Trimble	30 min
Sep 10, 11:11 PM CDT	Severe Thunderstorm Warning	LMK	Trimble	19 min
Sep 10, 11:31 PM CDT	Special Weather Statement	LMK	Henry, Jefferson, Oldham, Shelby	29 min
Sep 11, 12:04 AM CDT	Areal Flood Advisory	LMK	Henry, Jefferson, Oldham, Shelby, Trimble	5 hr
Sep 11, 12:28 AM CDT	Flash Flood Warning	LMK	Jefferson, Oldham	3 hr
Sep 11, 12:44 AM CDT	Flash Flood Warning	LMK	Hancock, Meade	3 hr
Sep 11, 12:57 AM CDT	Areal Flood Advisory	LMK	Bourbon, Franklin, Harrison, Nicholas, Scott	5 hr
Sep 11, 1:34 AM CDT	Special Weather Statement	LMK	Hancock	31 min
Sep 11, 1:54 AM CDT	Special Weather Statement	LMK	Grayson, Ohio	31 min
Sep 11, 2:09 AM CDT	Special Weather Statement	LMK	Breckinridge	31 min
Sep 11, 2:14 AM CDT	Areal Flood Advisory	LMK	Breckinridge, Bullitt, Hancock, Hardin, Meade, Nelson and 3 more	5 hr
Sep 11, 2:18 AM CDT	Areal Flood Advisory	LMK	Anderson, Clark, Fayette, Garrard, Jessamine, Madison and 3 more	5 hr
Sep 11, 3:21 AM CDT	Flash Flood Warning	LMK	Anderson, Franklin, Scott, Shelby, Woodford	3 hr
Sep 11, 3:37 AM CDT	Flash Flood Warning	LMK	Fayette	3 hr
Sep 11, 3:42 AM CDT	Special Weather Statement	LMK	Adair, Green, Hart, Taylor	43 min
Sep 11, 4:24 AM CDT	Special Weather Statement	LMK	Casey, Green, Taylor	46 min
Sep 10, 9:59 PM CDT	Special Weather Statement	LMK	Dubois, Orange, Washington	46 min
Sep 10, 11:44 PM CDT	Areal Flood Advisory	LMK	Crawford, Dubois, Floyd, Harrison, Orange, Perry and 1 more	5 hr

Nearby

Flash Flood Watches in Kentucky, 2014 Flash Flood Watches in Indiana, 2014 Every flash flood watch in 2014

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.