Alert archive / Kentucky / Flash Flood Warnings in 2010

Flash Flood Warning 42, NWS Jackson, KY

July 17, 2010Pike County, Kentucky

NWS Jackson, KY issued this flash flood warning at Jul 17, 2010, 7:57 PM EDT for Pike County, Kentucky. It was in force for 6 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: Jul 17, 2010, 7:57 PM EDT (23:57 UTC)
Expired: Jul 18, 2010, 2:00 AM EDT
In force: 6 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 23:57 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, 12.0 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: 2000 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 949 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

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 17, 7:37 PM EDT, 20 minutes earlier.

Area forecast discussion, Jul 17, 7:37 PM EDT, 20 minutes before

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Hazardous weather outlook, Jul 17, 5:46 AM EDT, 14 hours 11 minutes before

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In the hours before

Special weather statement, Jul 17, 3:56 PM EDT, 4 hours 1 minute before

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Special weather statement, Jul 17, 4:27 PM EDT, 3 hours 30 minutes before

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Special weather statement, Jul 17, 4:46 PM EDT, 3 hours 11 minutes before

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Special weather statement, Jul 17, 5:38 PM EDT, 2 hours 19 minutes before

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Special weather statement, Jul 17, 6:57 PM EDT, 1 hour before

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Local storm report, Jul 17, 7:14 PM EDT, 43 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 17, 4:42 AM EDT	Severe Thunderstorm Warning	JKL	Montgomery	20 min
Jul 17, 5:31 PM EDT	Areal Flood Advisory	JKL	Pike	6 hr
Jul 17, 6:22 PM EDT	Severe Thunderstorm Warning	JKL	Pike	38 min
Jul 17, 7:26 PM EDT	Areal Flood Advisory	JKL	Pike	6 hr
Jul 17, 7:41 PM EDT	Severe Thunderstorm Warning	JKL	Pike	49 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.