Alert archive / Georgia / Frost Advisories in 2014

Frost Advisory 4, NWS Greenville-Spartanburg, SC

October 22, 2014Jackson County, North Carolina; Habersham County, Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this frost advisory at Oct 22, 2014, 2:51 PM EDT for Jackson County, North Carolina; Habersham County, Rabun County, Georgia. It took effect at Oct 23, 2014, 2:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Oct 22, 2014, 2:51 PM EDT (18:51 UTC)
In effect from
Oct 23, 2014, 2:00 AM EDT
Expired
Oct 23, 2014, 9:00 AM EDT
In force
7 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Habersham County, GA, Rabun County, GA, Jackson County, NC

The radar

The Greer radar (KGSP), 104 km from the middle of the area, began a volume at 18:55 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.9 hours before the alert went out and 203 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, Peachtre/Fal Fld, GA at 12:00Z on 2014-10-22Temperature 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, Peachtre/Fal Fld, GA at 12:00Z on 2014-10-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -74 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
1881 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-74 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Frost Advisories in Georgia, 2014Frost Advisories in North Carolina, 2014Every frost advisory in 2014

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.