Alert archive / Kentucky / Heat Advisories in 2012

Heat Advisory 4, NWS Jackson, KY

July 25, 20129 counties in Kentucky

NWS Jackson, KY issued this heat advisory at Jul 25, 2012, 11:05 AM EDT for 9 counties in Kentucky. It took effect at Jul 25, 2012, 12:00 PM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Jul 25, 2012, 11:05 AM EDT (15:05 UTC)
In effect from
Jul 25, 2012, 12:00 PM EDT
Expired
Jul 25, 2012, 8:00 PM EDT
In force
8 hr
Issued by
NWS Jackson, KY

Counties Bath County, KY, Estill County, KY, Fleming County, KY, Jackson County, KY, Montgomery County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Wayne County, KY

The radar

The Jackson,KY radar (KJKL), 69 km from the middle of the area, began a volume at 15:10 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, 3.1 hours before the alert went out and 201 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 2012-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
232 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 Jackson, KY wrote its last area forecast discussion before this heat advisory went out at Jul 25, 8:24 AM EDT, 2 hours 41 minutes earlier.

Area forecast discussion, Jul 25, 8:24 AM EDT, 2 hours 41 minutes before
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Hazardous weather outlook, Jul 25, 11:05 AM EDT, 0 minutes before
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In the hours before

Local storm report, Jul 25, 7:52 AM EDT, 3 hours 13 minutes before
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Local storm report, Jul 25, 7:53 AM EDT, 3 hours 12 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 1:00 AM EDTAreal Flood AdvisoryJKLMartin, Pike3 hr
Jul 25, 1:24 AM EDTFlash Flood WarningJKLPike3 hr
Jul 25, 1:55 AM EDTAreal Flood AdvisoryJKLBreathitt, Knott93 min

Nearby

Heat Advisories in Kentucky, 2012Every 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.