Alert archive / North Carolina / Heat Advisories in 2015

Heat Advisory 7, NWS Raleigh, NC

June 21, 201511 counties in North Carolina

NWS Raleigh, NC issued this heat advisory at Jun 21, 2015, 4:04 PM EDT for 11 counties in North Carolina. It took effect at Jun 22, 2015, 12:00 PM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jun 21, 2015, 4:04 PM EDT (20:04 UTC)
In effect from: Jun 22, 2015, 12:00 PM EDT
Expired: Jun 22, 2015, 6:52 PM EDT
In force: 7 hr
Issued by: NWS Raleigh, NC

Counties Cumberland County, NC, Edgecombe County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Nash County, NC, Sampson County, NC, Scotland County, NC, Wayne County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 25 km from the middle of the area, began a volume at 20:06 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, 8.1 hours before the alert went out and 153 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1328 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 153 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 Jun 21, 2:59 PM EDT, 1 hour 5 minutes earlier.

Area forecast discussion, Jun 21, 2:59 PM EDT, 1 hour 5 minutes before

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Hazardous weather outlook, Jun 21, 6:04 AM EDT, 10 hours before

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<body>
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      <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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 8:28 PM EDT	Special Weather Statement	RAH	Wake	47 min
Jun 20, 8:38 PM EDT	Severe Thunderstorm Warning	RAH	Halifax, Warren	52 min
Jun 20, 8:46 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Johnston, Nash, Wake	44 min
Jun 20, 9:09 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Vance, Warren	44 min
Jun 20, 9:25 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Franklin, Nash	65 min
Jun 20, 9:31 PM EDT	Special Weather Statement	RAH	Wake	59 min
Jun 20, 9:34 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	41 min
Jun 20, 9:42 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Johnston, Nash, Wake	48 min
Jun 20, 9:57 PM EDT	Special Weather Statement	RAH	Davidson	63 min
Jun 20, 10:20 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	40 min
Jun 20, 10:30 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Nash	22 min
Jun 20, 11:07 PM EDT	Special Weather Statement	RAH	Halifax	23 min
Jun 21, 7:35 PM EDT	Special Weather Statement	RAH	Forsyth, Guilford	55 min

Nearby

Heat Advisories in North Carolina, 2015 Every heat advisory in 2015

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.