Alert archive / Kentucky / Areal Flood Warnings in 2009

Areal Flood Warning 21, NWS Jackson, KY

August 12, 2009Pike County, Kentucky

NWS Jackson, KY issued this areal flood warning at Aug 12, 2009, 10:07 AM EDT for Pike County, Kentucky. It was in force for 3 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: Aug 12, 2009, 10:07 AM EDT (14:07 UTC)
Expired: Aug 12, 2009, 1:00 PM EDT
In force: 3 hr
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Flood severity: None

County Pike County, KY

The radar

The Jackson,KY radar (KJKL), 82 km from the middle of the area, began a volume at 14:09 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, 2.1 hours before the alert went out and 250 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: 1422 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 646 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 30 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 areal 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 areal flood warning went out at Aug 12, 9:52 AM EDT, 15 minutes earlier.

Area forecast discussion, Aug 12, 9:52 AM EDT, 15 minutes before

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Hazardous weather outlook, Aug 12, 6:37 AM EDT, 3 hours 30 minutes before

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In the hours before

Local storm report, Aug 12, 4:26 AM EDT, 5 hours 41 minutes before

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Local storm report, Aug 12, 5:05 AM EDT, 5 hours 2 minutes before

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Local storm report, Aug 12, 7:01 AM EDT, 3 hours 6 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
Aug 12, 1:06 AM EDT	Flash Flood Warning	JKL	Harlan, Leslie, Perry	3 hr
Aug 12, 3:04 AM EDT	Flash Flood Warning	JKL	Pike	3 hr
Aug 12, 4:00 AM EDT	Areal Flood Warning	JKL	Leslie	6 hr
Aug 12, 7:08 AM EDT	Areal Flood Warning	JKL	Pike	3 hr
Aug 12, 10:00 AM EDT	Areal Flood Warning	JKL	Leslie	6 hr
Aug 12, 5:00 PM EDT	Areal Flood Advisory	JKL	Floyd, Knott, Letcher, Pike	2 hr

Nearby

Areal Flood Warnings in Kentucky, 2009 Every areal flood warning in 2009

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.