Alert archive / Kentucky / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 35, NWS Louisville, KY

February 11, 2009Shelby County, Spencer County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Feb 11, 2009, 4:40 PM EST for Shelby County, Spencer County, Kentucky. It was in force for 14 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: Feb 11, 2009, 4:40 PM EST (21:40 UTC)
Expired: Feb 11, 2009, 4:54 PM EST
In force: 14 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon

Counties Shelby County, KY, Spencer County, KY

The radar

The Louisville radar (KLVX), 62 km from the middle of the area, began a volume at 21:40 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 11, 11:38 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.7 hours before the alert went out and 193 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 468 m²/s²
0-3 km storm-relative helicity: 468 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 11, 4:00 PM EST, 40 minutes earlier.

Area forecast discussion, Feb 11, 4:00 PM EST, 40 minutes before

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Hazardous weather outlook, Feb 11, 4:37 PM EST, 3 minutes before

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In the hours before

Local storm report, Feb 11, 4:04 PM EST, 36 minutes before

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Special weather statement, Feb 11, 4:12 PM EST, 28 minutes before

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Local storm report, Feb 11, 4:16 PM EST, 24 minutes before

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Local storm report, Feb 11, 4:26 PM EST, 14 minutes before

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Local storm report, Feb 11, 4:38 PM EST, 2 minutes before

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Local storm report, Feb 11, 4:40 PM EST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 11, 12:16 PM EST	Severe Thunderstorm Warning	LMK	Butler, Logan, Ohio	44 min
Feb 11, 12:40 PM EST	Severe Thunderstorm Warning	LMK	Simpson, Warren	35 min
Feb 11, 12:48 PM EST	Severe Thunderstorm Warning	LMK	Hancock	27 min
Feb 11, 1:13 PM EST	Severe Thunderstorm Warning	LMK	Allen, Barren, Edmonson, Warren	32 min
Feb 11, 1:17 PM EST	Severe Thunderstorm Warning	LMK	Breckinridge, Grayson, Hardin	43 min
Feb 11, 1:31 PM EST	Severe Thunderstorm Warning	LMK	Meade	44 min
Feb 11, 1:34 PM EST	Severe Thunderstorm Warning	LMK	Barren, Hart	26 min
Feb 11, 1:45 PM EST	Severe Thunderstorm Warning	LMK	Hardin	30 min
Feb 11, 1:55 PM EST	Severe Thunderstorm Warning	LMK	Green, Hart, Larue, Metcalfe	35 min
Feb 11, 1:57 PM EST	Severe Thunderstorm Warning	LMK	Hardin, Larue	33 min
Feb 11, 2:00 PM EST	Severe Thunderstorm Warning	LMK	Bullitt	30 min
Feb 11, 2:06 PM EST	Severe Thunderstorm Warning	LMK	Jefferson	24 min
Feb 11, 2:06 PM EST	Severe Thunderstorm Warning	LMK	Green, Larue, Marion, Taylor	39 min
Feb 11, 2:08 PM EST	Severe Thunderstorm Warning	LMK	Nelson	37 min
Feb 11, 2:08 PM EST	Severe Thunderstorm Warning	LMK	Cumberland, Metcalfe, Monroe	37 min
Feb 11, 2:12 PM EST	Severe Thunderstorm Warning	LMK	Adair, Metcalfe, Russell	33 min
Feb 11, 2:12 PM EST	Severe Thunderstorm Warning	LMK	Bullitt, Nelson, Spencer	33 min
Feb 11, 2:18 PM EST	Severe Thunderstorm Warning	LMK	Oldham, Shelby	42 min
Feb 11, 2:32 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Casey, Marion, Taylor	28 min
Feb 11, 2:34 PM EST	Severe Thunderstorm Warning	LMK	Henry	41 min
Feb 11, 2:38 PM EST	Severe Thunderstorm Warning	LMK	Clinton, Russell	37 min
Feb 11, 2:44 PM EST	Severe Thunderstorm Warning	LMK	Anderson	31 min
Feb 11, 2:46 PM EST	Severe Thunderstorm Warning	LMK	Adair, Casey, Russell	29 min
Feb 11, 2:50 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Mercer, Woodford	25 min
Feb 11, 2:54 PM EST	Tornado Warning	LMK	Casey	20 min
Feb 11, 2:56 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Casey, Lincoln	34 min
Feb 11, 2:59 PM EST	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Scott, Woodford	31 min
Feb 11, 2:59 PM EST	Severe Thunderstorm Warning	LMK	Fayette, Jessamine	46 min
Feb 11, 3:02 PM EST	Tornado Warning	LMK	Lincoln	28 min
Feb 11, 3:09 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Fayette, Garrard, Jessamine, Lincoln, Madison	36 min
Feb 11, 3:11 PM EST	Severe Thunderstorm Warning	LMK	Casey, Lincoln	34 min
Feb 11, 3:16 PM EST	Tornado Warning	LMK	Garrard, Madison	18 min
Feb 11, 3:18 PM EST	Tornado Warning	LMK	Lincoln	27 min
Feb 11, 3:31 PM EST	Severe Thunderstorm Warning	LMK	Clark, Madison	29 min
Feb 11, 3:37 PM EST	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	23 min
Feb 11, 12:33 PM EST	Severe Thunderstorm Warning	LMK	Dubois, Perry	27 min
Feb 11, 12:56 PM EST	Tornado Warning	LMK	Crawford, Dubois, Orange, Perry	34 min
Feb 11, 1:03 PM EST	Severe Thunderstorm Warning	LMK	Perry	42 min
Feb 11, 2:13 PM EST	Severe Thunderstorm Warning	LMK	Scott	34 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2009 Every severe thunderstorm 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.