Alert archive / Kentucky / Flash Flood Warnings in 2010

Flash Flood Warning 70, NWS Jackson, KY

September 11, 20104 counties in Kentucky

NWS Jackson, KY issued this flash flood warning at Sep 11, 2010, 3:58 PM EDT for 4 counties in Kentucky. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 11, 2010, 3:58 PM EDT (19:58 UTC)
Expired: Sep 11, 2010, 5:58 PM EDT
In force: 2 hr
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Flood severity: None

Counties Laurel County, KY, McCreary County, KY, Pulaski County, KY, Wayne County, KY

The radar

The Jackson,KY radar (KJKL), 128 km from the middle of the area, began a volume at 20:00 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.0 hours before the alert went out and 397 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: 356 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1513 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 23 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 Sep 11, 3:30 PM EDT, 28 minutes earlier.

Area forecast discussion, Sep 11, 3:30 PM EDT, 28 minutes before

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Hazardous weather outlook, Sep 11, 3:52 PM EDT, 6 minutes before

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In the hours before

Local storm report, Sep 11, 10:58 AM EDT, 5 hours before

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Local storm report, Sep 11, 11:00 AM EDT, 4 hours 58 minutes before

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Local storm report, Sep 11, 11:07 AM EDT, 4 hours 51 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
Sep 11, 2:02 AM EDT	Areal Flood Advisory	JKL	Pulaski, Wayne	6 hr
Sep 11, 3:58 AM EDT	Areal Flood Advisory	JKL	Knox, Laurel, McCreary, Pulaski, Whitley	6 hr
Sep 11, 4:17 AM EDT	Flash Flood Warning	JKL	Knox, Laurel, Whitley	6 hr
Sep 11, 6:10 AM EDT	Flash Flood Warning	JKL	Laurel, McCreary, Pulaski, Wayne, Whitley	6 hr
Sep 11, 9:56 AM EDT	Areal Flood Warning	JKL	Knox, Laurel, Whitley	4 hr
Sep 11, 11:57 AM EDT	Areal Flood Warning	JKL	Laurel, Pulaski	4 hr
Sep 11, 4:27 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Lee, Powell	48 min
Sep 11, 4:42 PM EDT	Severe Thunderstorm Warning	JKL	Clay, Jackson, Laurel, McCreary, Owsley, Pulaski and 3 more	48 min
Sep 11, 5:29 PM EDT	Severe Thunderstorm Warning	JKL	Bell, Clay, Knox, Leslie, Owsley, Perry	46 min

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.