Alert archive / North Carolina / Excessive Heat Watches in 2012

Excessive Heat Watch 2, NWS Raleigh, NC

June 30, 201226 counties in North Carolina

NWS Raleigh, NC issued this excessive heat watch at Jun 30, 2012, 3:19 PM EDT for 26 counties in North Carolina. It took effect at Jul 2, 2012, 11:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Jun 30, 2012, 3:19 PM EDT (19:19 UTC)
In effect from: Jul 2, 2012, 11:00 AM EDT
Expired: Jul 1, 2012, 4:59 PM EDT
In force
Issued by: NWS Raleigh, NC

All 26 counties

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, 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), 30 km from the middle of the area, began a volume at 19:17 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 12:00Z, 7.3 hours before the alert went out and 109 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: 385 J/kg
Mixed-layer CIN: -331 J/kg
Mixed-layer LCL: 2344 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 15 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 excessive heat watch 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 excessive heat watch went out at Jun 30, 2:50 PM EDT, 29 minutes earlier.

Area forecast discussion, Jun 30, 2:50 PM EDT, 29 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, Jun 30, 11:39 AM EDT, 3 hours 40 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
Jun 29, 9:55 PM EDT	Special Weather Statement	RAH	Alamance, Forsyth, Guilford	50 min
Jun 29, 10:04 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Forsyth, Guilford, Orange, Person	56 min
Jun 29, 10:40 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Vance, Warren	50 min
Jun 29, 11:04 PM EDT	Special Weather Statement	RAH	Chatham, Davidson, Franklin, Randolph, Wake	56 min
Jun 29, 11:15 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Franklin, Halifax, Johnston, Nash, Wake and 2 more	75 min
Jun 29, 11:44 PM EDT	Special Weather Statement	RAH	Alamance, Durham, Forsyth, Granville, Guilford, Orange and 3 more	91 min
Jun 29, 11:44 PM EDT	Severe Thunderstorm Warning	RAH	Harnett, Johnston, Wake, Wayne, Wilson	61 min
Jun 30, 12:07 AM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Hoke, Sampson	34 min

Nearby

Excessive Heat Watches in North Carolina, 2012 Every excessive heat watch 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.