Alert archive / Kentucky / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 7, NWS Louisville, KY

March 12, 20105 counties in Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Mar 12, 2010, 12:30 PM EST for 5 counties in Kentucky. It was in force for 30 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: Mar 12, 2010, 12:30 PM EST (17:30 UTC)
Expired: Mar 12, 2010, 1:00 PM EST
In force: 30 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon

Counties Henry County, KY, Jefferson County, KY, Oldham County, KY, Shelby County, KY, Spencer County, KY

The radar

The Louisville radar (KLVX), 61 km from the middle of the area, began a volume at 17:29 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
Mar 12, 12:04 PM EST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.5 hours before the alert went out and 261 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: 1258 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 189 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 Mar 12, 12:30 PM EST, 0 minutes earlier.

Area forecast discussion, Mar 12, 12:30 PM EST, 0 minutes before

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Hazardous weather outlook, Mar 12, 12:10 PM EST, 20 minutes before

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In the hours before

Local storm report, Mar 12, 11:44 AM EST, 46 minutes before

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Local storm report, Mar 12, 11:48 AM EST, 42 minutes before

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Local storm report, Mar 12, 11:52 AM EST, 38 minutes before

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Local storm report, Mar 12, 11:57 AM EST, 33 minutes before

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Local storm report, Mar 12, 12:08 PM EST, 22 minutes before

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Local storm report, Mar 12, 12:21 PM EST, 9 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
Mar 12, 7:30 AM EST	Dense Fog Advisory	LMK	Adair, Allen, Barren, Butler, Casey, Clinton and 12 more	90 min
Mar 12, 8:54 AM EST	Special Weather Statement	LMK	Allen, Warren	36 min
Mar 12, 9:41 AM EST	Special Weather Statement	LMK	Barren, Monroe	49 min
Mar 12, 10:13 AM EST	Special Weather Statement	LMK	Metcalfe	47 min
Mar 12, 10:58 AM EST	Special Weather Statement	LMK	Green, Larue, Marion, Taylor, Washington	47 min
Mar 12, 11:05 AM EST	Severe Thunderstorm Warning	LMK	Green, Larue, Marion, Nelson, Taylor	25 min
Mar 12, 11:26 AM EST	Severe Thunderstorm Warning	LMK	Marion, Nelson, Spencer, Washington	34 min
Mar 12, 11:59 AM EST	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson, Nelson, Shelby, Spencer	31 min
Mar 12, 1:02 PM EST	Severe Thunderstorm Warning	LMK	Henry, Oldham, Shelby, Trimble	28 min
Mar 12, 1:27 PM EST	Special Weather Statement	LMK	Trimble	33 min
Mar 12, 2:32 PM EST	Areal Flood Advisory	LMK	Scott	88 min
Mar 12, 2:56 PM EST	Special Weather Statement	LMK	Clark, Fayette, Madison	34 min
Mar 12, 3:20 PM EST	Special Weather Statement	LMK	Clark	25 min
Mar 12, 3:42 PM EST	Special Weather Statement	LMK	Bourbon	33 min
Mar 12, 4:06 PM EST	Special Weather Statement	LMK	Bourbon, Harrison, Nicholas	39 min
Mar 12, 2:03 PM EST	Special Weather Statement	LMK	Jefferson	12 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2010 Every severe thunderstorm 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.