Alert archive / South Carolina / Frost Advisories in 2019

Frost Advisory 4, NWS Wilmington, NC

November 8, 2019Georgetown County, Horry County, Williamsburg County, South Carolina

NWS Wilmington, NC issued this frost advisory at Nov 8, 2019, 4:00 AM EST for Georgetown County, Horry County, Williamsburg County, South Carolina. It took effect at Nov 9, 2019, 3:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Nov 8, 2019, 4:00 AM EST (09:00 UTC)
In effect from
Nov 9, 2019, 3:00 AM EST
Expired
Nov 8, 2019, 2:49 PM EST
In force
Issued by
NWS Wilmington, NC

Counties Georgetown County, SC, Horry County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 92 km from the middle of the area, began a volume at 08:59 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, 9.0 hours before the alert went out and 103 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 2019-11-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLLFCEL10008507005003002001001 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 2019-11-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.1939587897Sfc1 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
12 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 8, 3:26 AM ESTFreeze WarningILMBladen, Columbus, Pender, Robeson29 hr
Nov 8, 7:59 AM ESTSmall Craft AdvisoryILM34 hr

Nearby

Frost Advisories in South Carolina, 2019Every frost advisory in 2019

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.