Alert archive / Kentucky / Heat Advisories in 2012

Heat Advisory 6, NWS Louisville, KY

July 18, 201210 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this heat advisory at Jul 18, 2012, 2:26 AM CDT for 10 counties in Kentucky; 10 counties in Indiana. It took effect at Jul 18, 2012, 10:00 AM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Jul 18, 2012, 2:26 AM CDT (07:26 UTC)
In effect from: Jul 18, 2012, 10:00 AM CDT
Expired: Jul 18, 2012, 7:53 PM CDT
In force: 10 hr
Issued by: NWS Louisville, KY

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, Breckinridge County, KY, Bullitt County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Jefferson County, KY, Meade County, KY, Ohio County, KY, Oldham County, KY, Trimble County, KY

The radar

The Louisville radar (KLVX), 28 km from the middle of the area, began a volume at 07:27 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 00:00Z, 7.4 hours before the alert went out and 233 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: 2483 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1532 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -11 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 heat advisory 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 heat advisory went out at Jul 18, 2:11 AM CDT, 15 minutes earlier.

Area forecast discussion, Jul 18, 2:11 AM CDT, 15 minutes before

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Hazardous weather outlook, Jul 17, 8:37 PM CDT, 5 hours 49 minutes before

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In the hours before

Special weather statement, Jul 17, 8:26 PM CDT, 6 hours before

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Special weather statement, Jul 18, 12:25 AM CDT, 2 hours 1 minute 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
Jul 18, 12:25 AM CDT	Special Weather Statement	LMK	Scott	30 min
Jul 18, 8:39 AM CDT	Special Weather Statement	LMK	Nicholas	46 min
Jul 18, 8:57 AM CDT	Areal Flood Advisory	LMK	Nicholas	104 min
Jul 18, 9:41 AM CDT	Special Weather Statement	LMK	Clinton	44 min
Jul 18, 12:27 PM CDT	Special Weather Statement	LMK	Russell	28 min
Jul 18, 12:59 PM CDT	Areal Flood Advisory	LMK	Adair, Russell	86 min
Jul 18, 1:12 PM CDT	Severe Thunderstorm Warning	LMK	Russell	28 min
Jul 18, 2:54 PM CDT	Special Weather Statement	LMK	Madison	31 min
Jul 18, 3:04 PM CDT	Severe Thunderstorm Warning	LMK	Madison	31 min
Jul 18, 3:05 PM CDT	Special Weather Statement	LMK	Washington	30 min
Jul 18, 3:07 PM CDT	Special Weather Statement	LMK	Washington	28 min
Jul 18, 3:18 PM CDT	Special Weather Statement	LMK	Oldham	32 min
Jul 18, 3:25 PM CDT	Special Weather Statement	LMK	Larue	30 min
Jul 18, 3:33 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Fayette, Jessamine, Madison	42 min
Jul 18, 3:40 PM CDT	Special Weather Statement	LMK	Jefferson, Oldham	30 min
Jul 18, 3:43 PM CDT	Flash Flood Warning	LMK	Madison	3 hr
Jul 18, 3:45 PM CDT	Severe Thunderstorm Warning	LMK	Jefferson	30 min
Jul 18, 3:57 PM CDT	Special Weather Statement	LMK	Harrison, Nicholas	28 min
Jul 18, 3:59 PM CDT	Special Weather Statement	LMK	Bourbon, Clark	46 min
Jul 18, 4:02 PM CDT	Special Weather Statement	LMK	Grayson	43 min
Jul 18, 4:26 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hardin, Meade	29 min
Jul 18, 4:33 PM CDT	Areal Flood Advisory	LMK	Bourbon, Clark, Fayette	117 min
Jul 18, 4:39 PM CDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison, Nicholas	46 min
Jul 18, 4:58 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hardin	32 min
Jul 18, 5:05 PM CDT	Severe Thunderstorm Warning	LMK	Bourbon, Nicholas	40 min
Jul 18, 5:08 PM CDT	Areal Flood Advisory	LMK	Bourbon, Harrison, Nicholas	3 hr
Jul 18, 5:13 PM CDT	Special Weather Statement	LMK	Franklin, Scott	62 min
Jul 18, 5:21 PM CDT	Special Weather Statement	LMK	Bullitt	29 min
Jul 18, 5:23 PM CDT	Special Weather Statement	LMK	Barren	47 min
Jul 18, 5:24 PM CDT	Severe Thunderstorm Warning	LMK	Bullitt, Nelson	31 min
Jul 18, 5:29 PM CDT	Severe Thunderstorm Warning	LMK	Scott	41 min
Jul 18, 5:38 PM CDT	Special Weather Statement	LMK	Anderson, Fayette, Woodford	42 min
Jul 18, 5:42 PM CDT	Severe Thunderstorm Warning	LMK	Franklin, Scott, Woodford	38 min
Jul 18, 5:45 PM CDT	Severe Thunderstorm Warning	LMK	Barren	30 min
Jul 18, 5:51 PM CDT	Special Weather Statement	LMK	Larue	29 min
Jul 18, 6:00 PM CDT	Special Weather Statement	LMK	Hart	45 min
Jul 18, 6:09 PM CDT	Special Weather Statement	LMK	Boyle, Garrard, Jessamine, Madison, Mercer	61 min
Jul 18, 6:13 PM CDT	Severe Thunderstorm Warning	LMK	Larue	32 min
Jul 18, 6:19 PM CDT	Severe Thunderstorm Warning	LMK	Fayette, Garrard, Jessamine, Madison, Mercer, Woodford	31 min
Jul 18, 6:49 PM CDT	Special Weather Statement	LMK	Boyle, Casey, Lincoln, Taylor	31 min
Jul 18, 6:50 PM CDT	Special Weather Statement	LMK	Hart	60 min
Jul 18, 6:55 PM CDT	Areal Flood Advisory	LMK	Hart	3 hr
Jul 18, 4:01 PM CDT	Special Weather Statement	LMK	Scott, Washington	44 min
Jul 18, 4:19 PM CDT	Severe Thunderstorm Warning	LMK	Washington	31 min
Jul 18, 4:55 PM CDT	Special Weather Statement	LMK	Floyd	30 min
Jul 18, 5:03 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Floyd, Harrison, Washington	32 min
Jul 18, 5:43 PM CDT	Special Weather Statement	LMK	Floyd, Harrison	27 min
Jul 18, 5:55 PM CDT	Special Weather Statement	LMK	Orange	25 min
Jul 18, 6:32 PM CDT	Areal Flood Advisory	LMK	Perry	88 min
Jul 18, 6:44 PM CDT	Flash Flood Warning	LMK	Perry	116 min
Jul 18, 6:52 PM CDT	Special Weather Statement	LMK	Perry	28 min
Jul 18, 6:56 PM CDT	Severe Thunderstorm Warning	LMK	Perry	29 min

Nearby

Heat Advisories in Kentucky, 2012 Heat Advisories in Indiana, 2012 Every heat advisory 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.