Alert archive / Kentucky / Flash Flood Watches in 2007

Flash Flood Watch 3, NWS Jackson, KY

July 19, 200733 counties in Kentucky

NWS Jackson, KY issued this flash flood watch at Jul 19, 2007, 3:05 PM EDT for 33 counties in Kentucky. It took effect at Jul 19, 2007, 4:00 PM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Jul 19, 2007, 3:05 PM EDT (19:05 UTC)
In effect from: Jul 19, 2007, 4:00 PM EDT
Expired: Jul 19, 2007, 9:11 PM EDT
In force: 5 hr
Issued by: NWS Jackson, KY
Flood severity: None

All 33 counties

Bath County, KY, Bell County, KY, Breathitt County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Floyd County, KY, Harlan County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY

The radar

The Jackson,KY radar (KJKL), 26 km from the middle of the area, began a volume at 19:08 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, 7.1 hours before the alert went out and 218 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: 1294 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 757 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.2

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 Jackson, KY wrote its last area forecast discussion before this flash flood watch went out at Jul 19, 2:12 PM EDT, 53 minutes earlier.

Area forecast discussion, Jul 19, 2:12 PM EDT, 53 minutes before

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Hazardous weather outlook, Jul 19, 5:44 AM EDT, 9 hours 21 minutes before

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In the hours before

Local storm report, Jul 19, 9:56 AM EDT, 5 hours 9 minutes before

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Local storm report, Jul 19, 11:24 AM EDT, 3 hours 41 minutes before

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Local storm report, Jul 19, 11:38 AM EDT, 3 hours 27 minutes before

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Local storm report, Jul 19, 11:39 AM EDT, 3 hours 26 minutes before

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Special weather statement, Jul 19, 2:15 PM EDT, 50 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 8:18 PM EDT	Severe Thunderstorm Warning	JKL	Fleming	42 min
Jul 18, 8:59 PM EDT	Severe Thunderstorm Warning	JKL	Fleming, Rowan	46 min

Nearby

Flash Flood Watches in Kentucky, 2007 Every flash flood watch 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.