Alert archive / South Carolina / Lake Wind Advisories in 2024

Lake Wind Advisory 21, NWS Charleston, SC

November 20, 2024Berkeley County, South Carolina

NWS Charleston, SC issued this lake wind advisory at Nov 20, 2024, 3:22 AM EST for Berkeley County, South Carolina. It took effect at Nov 20, 2024, 10:00 PM EST. It was in force for 38 hr.

The area

The counties it named.

The facts

Issued
Nov 20, 2024, 3:22 AM EST (08:22 UTC)
In effect from
Nov 20, 2024, 10:00 PM EST
Expired
Nov 22, 2024, 12:00 PM EST
In force
38 hr
Issued by
NWS Charleston, SC

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 118 km from the middle of the area, began a volume at 08:22 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.4 hours before the alert went out and 320 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, Greensboro/Hi Pt, NC at 00:00Z on 2024-11-20Temperature 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, Greensboro/Hi Pt, NC at 00:00Z on 2024-11-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 226 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
939 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
226 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 20, 3:24 AM ESTGale WatchCHS13 hr
Nov 20, 3:24 AM ESTSmall Craft AdvisoryCHS3 days
Nov 20, 4:13 PM ESTGale WarningCHS15 hr

Nearby

Lake Wind Advisories in South Carolina, 2024Every lake wind advisory in 2024

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.