Alert archive / South Carolina / Dense Fog Advisories in 2021

Dense Fog Advisory 3, NWS Wilmington, NC

January 16, 2021Bladen County, Columbus County, Robeson County, North Carolina; 7 counties in South Carolina

NWS Wilmington, NC issued this dense fog advisory at Jan 16, 2021, 12:29 AM EST for Bladen County, Columbus County, Robeson County, North Carolina; 7 counties in South Carolina. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Jan 16, 2021, 12:29 AM EST (05:29 UTC)
Expired: Jan 16, 2021, 6:00 AM EST
In force: 6 hr
Issued by: NWS Wilmington, NC

Counties Bladen County, NC, Columbus County, NC, Robeson County, NC, Darlington County, SC, Dillon County, SC, Florence County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 86 km from the middle of the area, began a volume at 05:30 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, 5.5 hours before the alert went out and 163 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: 816 m above ground
0-6 km bulk shear: 100 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 221 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 dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, NC wrote its last area forecast discussion before this dense fog advisory went out at Jan 15, 9:33 PM EST, 2 hours 56 minutes earlier.

Area forecast discussion, Jan 15, 9:33 PM EST, 2 hours 56 minutes before

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Hazardous weather outlook, Jan 15, 2:43 PM EST, 9 hours 46 minutes before

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In the hours before

Special weather statement, Jan 15, 10:16 PM EST, 2 hours 13 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 16, 2:12 AM EST	Coastal Flood Advisory	ILM	New Hanover	12 hr
Jan 16, 3:10 AM EST	Gale Warning	ILM		18 hr

Nearby

Dense Fog Advisories in South Carolina, 2021 Dense Fog Advisories in North Carolina, 2021 Every dense fog advisory in 2021

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.