Alert archive / Kentucky / Heat Advisories in 2011

Heat Advisory 8, NWS Louisville, KY

August 3, 201121 counties in Kentucky; 5 counties in Indiana

NWS Louisville, KY issued this heat advisory at Aug 3, 2011, 2:39 AM CDT for 21 counties in Kentucky; 5 counties in Indiana. It took effect at Aug 3, 2011, 12:00 PM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Aug 3, 2011, 2:39 AM CDT (07:39 UTC)
In effect from
Aug 3, 2011, 12:00 PM CDT
Expired
Aug 3, 2011, 7:00 PM CDT
In force
7 hr
Issued by
NWS Louisville, KY
All 26 counties

Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Perry County, IN, Allen County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Jefferson County, KY, Larue County, KY, Logan County, KY, Meade County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Ohio County, KY, Simpson County, KY, Warren County, KY

The radar

The Louisville radar (KLVX), 53 km from the middle of the area, began a volume at 07:39 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 00:00Z, 7.7 hours before the alert went out and 296 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 00:00Z on 2011-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 856 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 00:00Z on 2011-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
856 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1530 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.2
Supercell composite
5.4

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 Aug 3, 2:24 AM CDT, 15 minutes earlier.

Area forecast discussion, Aug 3, 2:24 AM CDT, 15 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Aug 2, 2:44 PM CDT, 11 hours 55 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 7:20 AM CDTSpecial Weather StatementLMKHarrison, Henry, Scott, Trimble55 min
Aug 3, 7:50 AM CDTSpecial Weather StatementLMKBourbon, Fayette, Franklin, Harrison, Henry, Nicholas and 2 more40 min
Aug 3, 8:15 AM CDTSevere Thunderstorm WarningLMKBourbon, Clark, Fayette, Nicholas, Scott30 min
Aug 3, 8:27 AM CDTSpecial Weather StatementLMKWoodford33 min
Aug 3, 8:35 AM CDTSpecial Weather StatementLMKFranklin, Scott25 min
Aug 3, 8:45 AM CDTSevere Thunderstorm WarningLMKAnderson, Bourbon, Clark, Fayette, Franklin, Jessamine and 3 more45 min
Aug 3, 8:55 AM CDTAreal Flood AdvisoryLMKFranklin, Harrison, Scott96 min
Aug 3, 9:00 AM CDTSpecial Weather StatementLMKAnderson, Garrard, Madison, Mercer30 min
Aug 3, 9:13 AM CDTAreal Flood AdvisoryLMKFayette, Jessamine, Woodford107 min
Aug 3, 9:27 AM CDTSpecial Weather StatementLMKBoyle, Clark, Fayette, Franklin, Garrard, Jessamine and 5 more33 min
Aug 3, 9:39 AM CDTAreal Flood AdvisoryLMKGarrard, Jessamine, Madison111 min
Aug 3, 9:55 AM CDTSpecial Weather StatementLMKFayette, Garrard, Jessamine, Lincoln, Madison, Woodford50 min
Aug 3, 10:30 AM CDTSpecial Weather StatementLMKLincoln30 min
Aug 3, 3:53 PM CDTSpecial Weather StatementLMKJefferson37 min
Aug 3, 4:20 PM CDTSpecial Weather StatementLMKBullitt25 min
Aug 3, 4:26 PM CDTSevere Thunderstorm WarningLMKSpencer34 min
Aug 3, 4:42 PM CDTAreal Flood AdvisoryLMKBullitt, Jefferson48 min

Nearby

Heat Advisories in Kentucky, 2011Heat Advisories in Indiana, 2011Every 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.