Alert archive / South Carolina / Frost Advisories in 2008

Frost Advisory 8, NWS Charleston, SC

October 30, 20085 counties in South Carolina; 5 counties in Georgia

NWS Charleston, SC issued this frost advisory at Oct 30, 2008, 3:27 PM EDT for 5 counties in South Carolina; 5 counties in Georgia. It took effect at Oct 30, 2008, 10:16 PM EDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Oct 30, 2008, 3:27 PM EDT (19:27 UTC)
In effect from: Oct 30, 2008, 10:16 PM EDT
Expired: Oct 31, 2008, 9:00 AM EDT
In force: 11 hr
Issued by: NWS Charleston, SC

Counties Bulloch County, GA, Candler County, GA, Effingham County, GA, Jenkins County, GA, Screven County, GA, Allendale County, SC, Berkeley County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC

The radar

The Charleston,SC radar (KCLX), 21 km from the middle of the area, began a volume at 19:26 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 12:00Z, 7.5 hours before the alert went out and 115 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: 2469 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -76 m²/s²
0-3 km storm-relative helicity: -88 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 frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, SC wrote its last area forecast discussion before this frost advisory went out at Oct 30, 1:41 PM EDT, 1 hour 46 minutes earlier.

Area forecast discussion, Oct 30, 1:41 PM EDT, 1 hour 46 minutes before

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Hazardous weather outlook, Oct 30, 3:55 AM EDT, 11 hours 32 minutes before

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The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 30, 3:33 AM EDT	Small Craft Advisory	CHS		7 days

Nearby

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