Alert archive / Kentucky / Flash Flood Watches in 2017

Flash Flood Watch 8, NWS Jackson, KY

July 23, 201717 counties in Kentucky

NWS Jackson, KY issued this flash flood watch at Jul 23, 2017, 9:47 AM EDT for 17 counties in Kentucky. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Jul 23, 2017, 9:47 AM EDT (13:47 UTC)
Expired: Jul 23, 2017, 3:54 PM EDT
In force: 6 hr
Issued by: NWS Jackson, KY
Flood severity: None

Counties Bath County, KY, Breathitt County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Floyd County, KY, Johnson County, KY, Lee County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Pike County, KY, Powell County, KY, Rowan County, KY, Wolfe County, KY

The radar

The Jackson,KY radar (KJKL), 29 km from the middle of the area, began a volume at 13:47 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, 1.8 hours before the alert went out and 180 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: 333 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

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 23, 7:55 AM EDT, 1 hour 52 minutes earlier.

Area forecast discussion, Jul 23, 7:55 AM EDT, 1 hour 52 minutes before

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Hazardous weather outlook, Jul 23, 4:30 AM EDT, 5 hours 17 minutes before

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In the hours before

Special weather statement, Jul 23, 4:05 AM EDT, 5 hours 42 minutes before

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Local storm report, Jul 23, 6:00 AM EDT, 3 hours 47 minutes before

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Local storm report, Jul 23, 6:05 AM EDT, 3 hours 42 minutes before

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Local storm report, Jul 23, 6:28 AM EDT, 3 hours 19 minutes before

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Local storm report, Jul 23, 6:30 AM EDT, 3 hours 17 minutes before

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Local storm report, Jul 23, 6:38 AM EDT, 3 hours 9 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 22, 9:36 PM EDT	Special Weather Statement	JKL	Fleming	54 min
Jul 22, 9:58 PM EDT	Special Weather Statement	JKL	Fleming	32 min
Jul 22, 10:17 PM EDT	Special Weather Statement	JKL	Rowan	28 min
Jul 22, 10:28 PM EDT	Special Weather Statement	JKL	Fleming	32 min
Jul 23, 12:09 AM EDT	Special Weather Statement	JKL	Fleming	36 min
Jul 23, 12:27 AM EDT	Areal Flood Advisory	JKL	Fleming	2 hr
Jul 23, 12:35 AM EDT	Severe Thunderstorm Warning	JKL	Fleming, Rowan	40 min
Jul 23, 12:49 AM EDT	Flash Flood Warning	JKL	Fleming	3 hr
Jul 23, 12:57 AM EDT	Special Weather Statement	JKL	Fleming	63 min
Jul 23, 1:05 AM EDT	Special Weather Statement	JKL	Elliott, Rowan	55 min
Jul 23, 1:17 AM EDT	Areal Flood Advisory	JKL	Fleming, Rowan	118 min
Jul 23, 1:23 AM EDT	Severe Thunderstorm Warning	JKL	Bath, Fleming, Rowan	34 min
Jul 23, 1:40 AM EDT	Flash Flood Warning	JKL	Fleming, Rowan	3 hr
Jul 23, 1:57 AM EDT	Areal Flood Advisory	JKL	Fleming, Rowan	2 hr
Jul 23, 2:02 AM EDT	Areal Flood Advisory	JKL	Elliott	118 min
Jul 23, 2:17 AM EDT	Special Weather Statement	JKL	Johnson, Magoffin	58 min
Jul 23, 3:04 AM EDT	Areal Flood Warning	JKL	Fleming	6 hr
Jul 23, 3:11 AM EDT	Areal Flood Warning	JKL	Fleming, Rowan	6 hr
Jul 23, 3:32 AM EDT	Special Weather Statement	JKL	Fleming	43 min
Jul 23, 4:05 AM EDT	Special Weather Statement	JKL	Elliott, Rowan	55 min
Jul 23, 5:41 AM EDT	Areal Flood Warning	JKL	Rowan	3 hr
Jul 23, 7:29 PM EDT	Special Weather Statement	JKL	Whitley	31 min

Nearby

Flash Flood Watches in Kentucky, 2017 Every flash flood watch in 2017

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.