Alert archive / North Carolina / Heat Advisories in 2012

Heat Advisory 5, NWS Raleigh, NC

July 6, 201228 counties in North Carolina

NWS Raleigh, NC issued this heat advisory at Jul 6, 2012, 4:07 AM EDT for 28 counties in North Carolina. It took effect at Jul 7, 2012, 11:00 AM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jul 6, 2012, 4:07 AM EDT (08:07 UTC)
In effect from: Jul 7, 2012, 11:00 AM EDT
Expired: Jul 7, 2012, 8:00 PM EDT
In force: 9 hr
Issued by: NWS Raleigh, NC

All 28 counties

Alamance County, NC, Anson County, NC, Chatham County, NC, Cumberland County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Granville County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 35 km from the middle of the area, began a volume at 08:10 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.1 hours before the alert went out and 104 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: 143 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 2132 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 14 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 Raleigh, NC wrote its last area forecast discussion before this heat advisory went out at Jul 6, 2:58 AM EDT, 1 hour 9 minutes earlier.

Area forecast discussion, Jul 6, 2:58 AM EDT, 1 hour 9 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, Jul 5, 9:12 PM EDT, 6 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 Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 8:03 PM EDT	Special Weather Statement	RAH	Hoke	57 min
Jul 5, 8:54 PM EDT	Special Weather Statement	RAH	Scotland	66 min
Jul 6, 3:51 PM EDT	Special Weather Statement	RAH	Durham, Franklin	54 min
Jul 6, 3:54 PM EDT	Special Weather Statement	RAH	Chatham, Randolph	51 min
Jul 6, 4:24 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Wake	36 min
Jul 6, 4:34 PM EDT	Special Weather Statement	RAH	Nash	56 min
Jul 6, 4:47 PM EDT	Special Weather Statement	RAH	Alamance, Chatham, Davidson, Forsyth, Guilford, Orange and 1 more	58 min
Jul 6, 4:48 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Nash	37 min
Jul 6, 4:52 PM EDT	Special Weather Statement	RAH	Durham, Edgecombe, Franklin, Granville, Halifax, Nash and 3 more	53 min
Jul 6, 4:57 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Durham, Wake	48 min
Jul 6, 5:02 PM EDT	Severe Thunderstorm Warning	RAH	Wake	58 min
Jul 6, 5:11 PM EDT	Severe Thunderstorm Warning	RAH	Halifax, Nash, Wilson	49 min
Jul 6, 5:18 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Harnett, Wake	42 min
Jul 6, 5:21 PM EDT	Areal Flood Advisory	RAH	Alamance, Chatham, Durham, Orange, Wake	2 hr
Jul 6, 5:33 PM EDT	Areal Flood Advisory	RAH	Davidson, Forsyth, Guilford	117 min
Jul 6, 5:35 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wake	33 min
Jul 6, 5:52 PM EDT	Special Weather Statement	RAH	Guilford, Randolph	53 min
Jul 6, 6:06 PM EDT	Special Weather Statement	RAH	Durham, Orange	54 min
Jul 6, 6:46 PM EDT	Special Weather Statement	RAH	Edgecombe	59 min
Jul 6, 7:01 PM EDT	Special Weather Statement	RAH	Stanly	59 min
Jul 6, 7:19 PM EDT	Special Weather Statement	RAH	Orange	56 min
Jul 6, 7:43 PM EDT	Areal Flood Advisory	RAH	Stanly	42 min

Nearby

Heat Advisories in North Carolina, 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.