Alert archive / Kentucky / Heat Advisories in 2011

Heat Advisory 2, NWS Jackson, KY

July 12, 201113 counties in Kentucky

NWS Jackson, KY issued this heat advisory at Jul 12, 2011, 11:13 AM EDT for 13 counties in Kentucky. It took effect at Jul 12, 2011, 3:41 PM EDT. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Jul 12, 2011, 11:13 AM EDT (15:13 UTC)
In effect from: Jul 12, 2011, 3:41 PM EDT
Expired: Jul 12, 2011, 6:00 PM EDT
In force: 2 hr
Issued by: NWS Jackson, KY

Counties Bath County, KY, Estill County, KY, Fleming County, KY, Jackson County, KY, Laurel County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Wayne County, KY

The radar

The Jackson,KY radar (KJKL), 64 km from the middle of the area, began a volume at 15:14 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, 3.2 hours before the alert went out and 205 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: 1093 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 894 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 Jackson, KY wrote its last area forecast discussion before this heat advisory went out at Jul 12, 6:50 AM EDT, 4 hours 23 minutes earlier.

Area forecast discussion, Jul 12, 6:50 AM EDT, 4 hours 23 minutes before

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Hazardous weather outlook, Jul 12, 4:30 AM EDT, 6 hours 43 minutes before

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In the hours before

Special weather statement, Jul 12, 6:02 AM EDT, 5 hours 11 minutes before

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Special weather statement, Jul 12, 6:28 AM EDT, 4 hours 45 minutes before

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Local storm report, Jul 12, 7:14 AM EDT, 3 hours 59 minutes before

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Local storm report, Jul 12, 8:19 AM EDT, 2 hours 54 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 8:05 PM EDT	Severe Thunderstorm Warning	JKL	Floyd, Johnson, Knott, Letcher, Magoffin, Martin and 1 more	40 min
Jul 12, 12:04 AM EDT	Areal Flood Advisory	JKL	Elliott, Fleming, Rowan	2 hr
Jul 12, 12:52 AM EDT	Flash Flood Warning	JKL	Elliott, Fleming, Morgan, Rowan	84 min
Jul 12, 1:00 AM EDT	Areal Flood Advisory	JKL	Bath, Floyd, Johnson, Magoffin, Martin, Menifee and 3 more	74 min
Jul 12, 2:56 AM EDT	Areal Flood Advisory	JKL	Breathitt, Harlan, Knott, Lee, Leslie, Letcher and 3 more	96 min
Jul 12, 3:01 AM EDT	Areal Flood Advisory	JKL	Elliott, Fleming, Rowan	3 hr
Jul 12, 4:39 AM EDT	Areal Flood Advisory	JKL	Floyd, Johnson, Magoffin, Pike	107 min
Jul 12, 5:35 AM EDT	Areal Flood Advisory	JKL	Floyd, Johnson, Magoffin, Menifee, Morgan	110 min
Jul 12, 11:13 AM EDT	Excessive Heat Warning	JKL	Bath, Estill, Fleming, Jackson, Laurel, McCreary and 7 more	4 hr
Jul 12, 6:41 PM EDT	Severe Thunderstorm Warning	JKL	Floyd, Johnson, Martin, Pike	49 min

Nearby

Heat Advisories in Kentucky, 2011 Every heat advisory in 2011

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.