Alert archive / Kentucky / Excessive Heat Warnings in 2012

Excessive Heat Warning 1, NWS Louisville, KY

June 29, 201223 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this excessive heat warning at Jun 29, 2012, 1:51 PM CDT for 23 counties in Kentucky; 10 counties in Indiana. It was in force for 55 hr. 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 29, 2012, 1:51 PM CDT (18:51 UTC)
Expired: Jul 1, 2012, 9:00 PM CDT
In force: 55 hr
Issued by: NWS Louisville, KY

All 33 counties

Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Allen County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Edmonson County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Larue County, KY, Logan County, KY, Meade County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Trimble County, KY, Warren County, KY

The radar

The Louisville radar (KLVX), 15 km from the middle of the area, began a volume at 18:55 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, 6.9 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: 3674 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 979 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this excessive heat 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 excessive heat warning went out at Jun 29, 12:12 PM CDT, 1 hour 39 minutes earlier.

Area forecast discussion, Jun 29, 12:12 PM CDT, 1 hour 39 minutes before

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Hazardous weather outlook, Jun 29, 10:34 AM CDT, 3 hours 17 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 29, 4:07 PM CDT	Special Weather Statement	LMK	Trimble	43 min
Jun 29, 4:54 PM CDT	Special Weather Statement	LMK	Harrison	26 min
Jun 29, 5:26 PM CDT	Special Weather Statement	LMK	Bourbon, Nicholas, Scott	29 min
Jun 29, 6:18 PM CDT	Special Weather Statement	LMK	Garrard, Jessamine, Madison	27 min

Nearby

Excessive Heat Warnings in Kentucky, 2012 Excessive Heat Warnings in Indiana, 2012 Every excessive heat warning in 2012

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.