Alert archive / South Carolina / Lake Wind Advisories in 2017

Lake Wind Advisory 4, NWS Charleston, SC

January 29, 2017Berkeley County, South Carolina

NWS Charleston, SC issued this lake wind advisory at Jan 29, 2017, 3:31 AM EST for Berkeley County, South Carolina. It took effect at Jan 29, 2017, 11:00 AM EST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Jan 29, 2017, 3:31 AM EST (08:31 UTC)
In effect from
Jan 29, 2017, 11:00 AM EST
Expired
Jan 30, 2017, 3:05 AM EST
In force
16 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 08:29 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, 8.5 hours before the alert went out and 33 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 2017-01-29Temperature 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, Charleston AFB, SC at 00:00Z on 2017-01-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939587897117136156175Sfc1 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
2116 m above ground
0-6 km bulk shear
107 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
137 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
Jan 28, 10:26 PM ESTSmall Craft AdvisoryCHS44 hr
Jan 29, 3:49 AM ESTSmall Craft AdvisoryCHS35 hr

Nearby

Lake Wind Advisories in South Carolina, 2017Every lake wind advisory in 2017

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.