Alert archive / Kentucky / Flash Flood Warnings in 2010

Flash Flood Warning 72, NWS Jackson, KY

November 30, 201012 counties in Kentucky

NWS Jackson, KY issued this flash flood warning at Nov 30, 2010, 6:42 PM EST for 12 counties in Kentucky. It was in force for 4 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: Nov 30, 2010, 6:42 PM EST (23:42 UTC)
Expired: Nov 30, 2010, 10:49 PM EST
In force: 4 hr
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Flood severity: None

Counties Bell County, KY, Clay County, KY, Harlan County, KY, Knox County, KY, Laurel County, KY, Leslie County, KY, Letcher County, KY, McCreary County, KY, Perry County, KY, Pulaski County, KY, Wayne County, KY, Whitley County, KY

The radar

The Jackson,KY radar (KJKL), 84 km from the middle of the area, began a volume at 23:41 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 12:00Z, 11.7 hours before the alert went out and 264 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: 14 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: -136 m²/s²
0-3 km storm-relative helicity: -299 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 Nov 30, 3:52 PM EST, 2 hours 50 minutes earlier.

Area forecast discussion, Nov 30, 3:52 PM EST, 2 hours 50 minutes before

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Hazardous weather outlook, Nov 30, 5:39 PM EST, 1 hour 3 minutes before

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In the hours before

Local storm report, Nov 30, 5:19 PM EST, 1 hour 23 minutes before

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Local storm report, Nov 30, 5:22 PM EST, 1 hour 20 minutes before

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Local storm report, Nov 30, 5:24 PM EST, 1 hour 18 minutes before

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Local storm report, Nov 30, 5:49 PM EST, 53 minutes before

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Local storm report, Nov 30, 5:53 PM EST, 49 minutes before

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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Nov 30, 6:20 PM EST, 22 minutes before

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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 30, 9:50 AM EST	Areal Flood Advisory	JKL	Bell, Clay, Estill, Jackson, Knox, Laurel and 7 more	6 hr
Nov 30, 10:33 AM EST	Areal Flood Warning	JKL	Knox, Laurel, McCreary, Pulaski, Wayne, Whitley	8 hr
Nov 30, 11:37 AM EST	Areal Flood Advisory	JKL	Bath, Bell, Breathitt, Elliott, Estill, Floyd and 15 more	6 hr
Nov 30, 1:43 PM EST	Flash Flood Warning	JKL	Bell, Clay, Harlan, Knox, Laurel, Leslie and 3 more	5 hr
Nov 30, 4:13 PM EST	Areal Flood Advisory	JKL	Bath, Breathitt, Clay, Elliott, Estill, Floyd and 18 more	6 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.