Alert archive / Kentucky / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 2, NWS Louisville, KY

January 21, 2010Clinton County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jan 21, 2010, 4:41 PM CST for Clinton County, Kentucky. It was in force for 34 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: Jan 21, 2010, 4:41 PM CST (22:41 UTC)
Expired: Jan 21, 2010, 5:15 PM CST
In force: 34 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon

County Clinton County, KY

The radar

The Nashville radar (KOHX), 138 km from the middle of the area, began a volume at 22:41 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jan 21, 3:16 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.7 hours before the alert went out and 147 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: 24 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 1:39 PM CST	Special Weather Statement	LMK	Butler, Edmonson, Logan, Simpson, Warren	36 min
Jan 21, 2:08 PM CST	Special Weather Statement	LMK	Logan	22 min
Jan 21, 3:06 PM CST	Severe Thunderstorm Warning	LMK	Monroe	24 min
Jan 21, 4:18 PM CST	Areal Flood Advisory	LMK	Adair	87 min
Jan 21, 5:15 PM CST	Areal Flood Advisory	LMK	Clinton, Cumberland	90 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.