Alert archive / Georgia / Frost Advisories in 2008

Frost Advisory 10, NWS Greenville-Spartanburg, SC

October 29, 20084 counties in South Carolina; 6 counties in Georgia

NWS Greenville-Spartanburg, SC issued this frost advisory at Oct 29, 2008, 2:47 PM EDT for 4 counties in South Carolina; 6 counties in Georgia. It took effect at Oct 30, 2008, 12:00 AM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Oct 29, 2008, 2:47 PM EDT (18:47 UTC)
In effect from
Oct 30, 2008, 12:00 AM EDT
Expired
Oct 30, 2008, 9:00 AM EDT
In force
9 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Abbeville County, SC, Anderson County, SC, Greenwood County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 77 km from the middle of the area, began a volume at 18:52 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, 6.8 hours before the alert went out and 193 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 2008-10-29Temperature 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 2008-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.19395878Sfc1 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
1621 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 29, 2:47 PM EDTFreeze WarningGSPAlexander, Burke, Cabarrus, Caldwell, Catawba, Cleveland and 10 more18 hr
Oct 29, 2:42 PM EDTFire Weather WatchGSPElbert, Franklin, Habersham, Hart, Rabun, Stephens20 hr

Nearby

Frost Advisories in Georgia, 2008Frost Advisories in South Carolina, 2008Every frost 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.