Alert archive / Kentucky / Flash Flood Warnings in 2010

Flash Flood Warning 52, NWS Jackson, KY

July 27, 20104 counties in Kentucky

NWS Jackson, KY issued this flash flood warning at Jul 27, 2010, 7:41 AM EDT for 4 counties in Kentucky. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 27, 2010, 7:41 AM EDT (11:41 UTC)
Expired: Jul 27, 2010, 9:34 AM EDT
In force: 113 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Flood severity: None

Counties Bell County, KY, Harlan County, KY, Knox County, KY, Whitley County, KY

The radar

The Knoxville radar (KMRX), 77 km from the middle of the area, began a volume at 11:44 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 00:00Z, 11.7 hours before the alert went out and 268 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: 2068 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 861 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jackson, KY wrote its last area forecast discussion before this flash flood warning went out at Jul 27, 6:28 AM EDT, 1 hour 13 minutes earlier.

Area forecast discussion, Jul 27, 6:28 AM EDT, 1 hour 13 minutes before

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Hazardous weather outlook, Jul 27, 3:59 AM EDT, 3 hours 42 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 27, 6:57 AM EDT	Areal Flood Advisory	JKL	Bell, Knox, Whitley	3 hr
Jul 27, 7:31 AM EDT	Areal Flood Advisory	JKL	Bell, Harlan, Knox, Whitley	2 hr
Jul 27, 9:08 AM EDT	Areal Flood Advisory	JKL	Breathitt, Owsley, Perry	85 min
Jul 27, 9:59 AM EDT	Areal Flood Advisory	JKL	Floyd, Knott, Pike	91 min
Jul 27, 10:45 AM EDT	Areal Flood Advisory	JKL	Breathitt, Floyd, Knott, Magoffin, Pike	88 min
Jul 27, 4:11 PM EDT	Areal Flood Advisory	JKL	Estill, Jackson	104 min
Jul 27, 4:35 PM EDT	Flash Flood Warning	JKL	Jackson	3 hr
Jul 27, 5:39 PM EDT	Areal Flood Advisory	JKL	Bell, Whitley	111 min
Jul 27, 5:57 PM EDT	Flash Flood Warning	JKL	Bell, Whitley	3 hr

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.