Alert archive / Kentucky / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 169, NWS Louisville, KY

June 11, 2009Allen County, Barren County, Monroe County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jun 11, 2009, 11:00 AM CDT for Allen County, Barren County, Monroe County, Kentucky. It was in force for 45 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: Jun 11, 2009, 11:00 AM CDT (16:00 UTC)
Expired: Jun 11, 2009, 11:45 AM CDT
In force: 45 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon

Counties Allen County, KY, Barren County, KY, Monroe County, KY

The radar

The Nashville radar (KOHX), 83 km from the middle of the area, began a volume at 16:01 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

Nashville Metro, TN (KBNA), launched 12:00Z, 4.0 hours before the alert went out and 96 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: 2748 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.5

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 Jun 11, 10:00 AM CDT, 1 hour earlier.

Area forecast discussion, Jun 11, 10:00 AM CDT, 1 hour before

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Hazardous weather outlook, Jun 11, 10:15 AM CDT, 45 minutes before

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In the hours before

Special weather statement, Jun 11, 5:01 AM CDT, 5 hours 59 minutes before

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Special weather statement, Jun 11, 5:10 AM CDT, 5 hours 50 minutes before

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Special weather statement, Jun 11, 5:30 AM CDT, 5 hours 30 minutes before

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Special weather statement, Jun 11, 10:07 AM CDT, 53 minutes before

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Special weather statement, Jun 11, 10:34 AM CDT, 26 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
Jun 11, 12:38 AM CDT	Severe Thunderstorm Warning	LMK	Barren, Edmonson, Hart, Warren	14 min
Jun 11, 2:06 AM CDT	Areal Flood Advisory	LMK	Breckinridge, Grayson, Hardin	114 min
Jun 11, 2:51 AM CDT	Severe Thunderstorm Warning	LMK	Bullitt, Nelson	24 min
Jun 11, 3:32 AM CDT	Severe Thunderstorm Warning	LMK	Mercer, Washington	28 min
Jun 11, 4:32 PM CDT	Severe Thunderstorm Warning	LMK	Ohio	43 min
Jun 11, 5:35 PM CDT	Severe Thunderstorm Warning	LMK	Grayson	40 min
Jun 11, 5:50 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Ohio	25 min
Jun 11, 5:54 PM CDT	Flash Flood Warning	LMK	Grayson, Ohio	116 min
Jun 11, 5:59 PM CDT	Tornado Warning	LMK	Edmonson, Grayson, Hart	31 min
Jun 11, 6:09 PM CDT	Severe Thunderstorm Warning	LMK	Butler, Ohio	51 min
Jun 11, 3:53 PM CDT	Severe Thunderstorm Warning	LMK	Crawford, Dubois, Orange	41 min
Jun 11, 4:18 PM CDT	Severe Thunderstorm Warning	LMK	Crawford, Harrison	42 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.