Alert archive / South Carolina / Lake Wind Advisories in 2012

Lake Wind Advisory 6, NWS Charleston, SC

February 10, 2012Berkeley County, South Carolina

NWS Charleston, SC issued this lake wind advisory at Feb 10, 2012, 3:09 PM EST for Berkeley County, South Carolina. It took effect at Feb 11, 2012, 11:00 AM EST. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Feb 10, 2012, 3:09 PM EST (20:09 UTC)
In effect from: Feb 11, 2012, 11:00 AM EST
Expired: Feb 12, 2012, 6:50 AM EST
In force: 20 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 20:12 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, 8.2 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-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: 814 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 198 m²/s²
0-3 km storm-relative helicity: 246 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 lake wind 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 lake wind advisory went out at Feb 10, 2:49 PM EST, 20 minutes earlier.

Area forecast discussion, Feb 10, 2:49 PM EST, 20 minutes before

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Hazardous weather outlook, Feb 10, 2:40 PM EST, 29 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
Feb 10, 1:56 PM EST	Fire Weather Watch	CHS	Bulloch, Candler, Effingham, Evans, Jenkins, Long and 2 more	12 hr
Feb 10, 2:00 PM EST	Gale Watch	CHS		15 hr
Feb 10, 2:00 PM EST	Small Craft Advisory	CHS		25 hr

Nearby

Lake Wind Advisories in South Carolina, 2012 Every lake wind advisory in 2012

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.