Alert archive / North Carolina / Dense Smoke Advisories in 2008

Dense Smoke Advisory 2, NWS Raleigh, NC

June 12, 200820 counties in North Carolina

NWS Raleigh, NC issued this dense smoke advisory at Jun 12, 2008, 12:23 PM EDT for 20 counties in North Carolina. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Jun 12, 2008, 12:23 PM EDT (16:23 UTC)
Expired: Jun 13, 2008, 7:59 AM EDT
In force: 20 hr
Issued by: NWS Raleigh, NC

Counties Alamance County, NC, Chatham County, NC, Cumberland County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Granville County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Person County, NC, Sampson County, NC, Vance County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 18 km from the middle of the area, began a volume at 16:23 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

Roanoke, VA (KRNK), launched 12:00Z, 4.4 hours before the alert went out and 180 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: 12 J/kg
Mixed-layer CIN: -252 J/kg
Mixed-layer LCL: 1147 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 60 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 dense smoke 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 dense smoke advisory went out at Jun 12, 11:11 AM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, Jun 12, 11:11 AM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, Jun 12, 4:35 AM EDT, 7 hours 48 minutes before

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In the hours before

Special weather statement, Jun 12, 11:39 AM EDT, 44 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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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 11, 8:17 PM EDT	Areal Flood Advisory	RAH	Richmond	118 min
Jun 11, 9:10 PM EDT	Severe Thunderstorm Warning	RAH	Wayne	33 min
Jun 11, 10:50 PM EDT	Flash Flood Warning	RAH	Forsyth	2 hr

Nearby

Dense Smoke Advisories in North Carolina, 2008 Every dense smoke advisory in 2008

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.