Alert archive / Kentucky / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 61, NWS Louisville, KY

May 12, 2010Oldham County, Trimble County, Kentucky; Clark County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at May 12, 2010, 6:10 PM EDT for Oldham County, Trimble County, Kentucky; Clark County, Indiana. It was in force for 35 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
May 12, 2010, 6:10 PM EDT (22:10 UTC)
Expired
May 12, 2010, 6:45 PM EDT
In force
35 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Clark County, IN, Oldham County, KY, Trimble County, KY

The radar

The Louisville radar (KLVX), 70 km from the middle of the area, began a volume at 22:11 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, 10.2 hours before the alert went out and 180 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2010-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 274 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2010-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
274 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
485 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

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 May 12, 2:55 PM EDT, 3 hours 15 minutes earlier.

Area forecast discussion, May 12, 2:55 PM EDT, 3 hours 15 minutes before
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Hazardous weather outlook, May 12, 3:27 PM EDT, 2 hours 43 minutes before
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In the hours before

Special weather statement, May 12, 5:34 PM EDT, 36 minutes before
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      <div class="status" id="status">Temporary Notice</div>
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The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 7:15 AM EDTSpecial Weather StatementLMKOldham, Trimble30 min
May 12, 9:33 AM EDTSpecial Weather StatementLMKMeade27 min
May 12, 9:59 AM EDTAreal Flood AdvisoryLMKHenry, Trimble3 hr
May 12, 9:59 AM EDTSpecial Weather StatementLMKJefferson, Oldham, Trimble61 min
May 12, 10:15 AM EDTSpecial Weather StatementLMKBullitt, Jefferson, Meade30 min
May 12, 10:23 AM EDTSevere Thunderstorm WarningLMKBullitt, Hardin, Jefferson, Meade22 min
May 12, 10:33 AM EDTSpecial Weather StatementLMKFranklin, Henry, Shelby27 min
May 12, 11:05 AM EDTSpecial Weather StatementLMKBullitt, Franklin, Harrison, Henry, Jefferson, Scott and 2 more25 min
May 12, 11:24 AM EDTSpecial Weather StatementLMKAnderson, Bourbon, Fayette, Franklin, Harrison, Mercer and 4 more36 min
May 12, 11:54 AM EDTSpecial Weather StatementLMKAnderson, Bourbon, Fayette, Harrison, Jessamine, Mercer and 4 more51 min
May 12, 12:16 PM EDTAreal Flood AdvisoryLMKHarrison, Nicholas3 hr
May 12, 5:34 PM EDTSpecial Weather StatementLMKTrimble26 min
May 12, 7:14 PM EDTSpecial Weather StatementLMKHenry31 min
May 12, 4:41 AM EDTSpecial Weather StatementLMKOrange, Washington34 min
May 12, 5:09 AM EDTSpecial Weather StatementLMKScott36 min
May 12, 7:41 AM EDTSpecial Weather StatementLMKCrawford34 min
May 12, 8:47 AM EDTSpecial Weather StatementLMKDubois, Orange28 min
May 12, 9:04 AM EDTSpecial Weather StatementLMKCrawford, Dubois, Orange, Perry, Washington26 min
May 12, 9:17 AM EDTSevere Thunderstorm WarningLMKOrange, Washington28 min
May 12, 9:42 AM EDTAreal Flood AdvisoryLMKCrawford, Dubois, Floyd, Harrison, Orange, Perry and 1 more3 hr
May 12, 9:44 AM EDTSpecial Weather StatementLMKClark, Jefferson, Scott31 min
May 12, 2:28 PM EDTRiver Flood WarningLMKJefferson, Scott16 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2010Severe Thunderstorm Warnings in Indiana, 2010Every 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.