Alert archive / North Carolina / Dense Fog Advisories in 2012

Dense Fog Advisory 13, NWS Greenville-Spartanburg, SC

December 8, 201210 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this dense fog advisory at Dec 8, 2012, 2:30 AM EST for 10 counties in North Carolina. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Dec 8, 2012, 2:30 AM EST (07:30 UTC)
Expired
Dec 8, 2012, 10:00 AM EST
In force
8 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Alexander County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Polk County, NC, Rutherford County, NC

The radar

The Greer radar (KGSP), 103 km from the middle of the area, began a volume at 07:30 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

Charleston AFB, SC (KCHS), launched 00:00Z, 7.5 hours before the alert went out and 335 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, Charleston AFB, SC at 00:00Z on 2012-12-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Charleston AFB, SC at 00:00Z on 2012-12-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
496 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Dense Fog Advisories in North Carolina, 2012Every dense fog 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.