Alert archive / North Carolina / Dense Fog Advisories in 2021

Dense Fog Advisory 4, NWS Newport/Morehead City, NC

February 28, 2021Carteret County, Onslow County, North Carolina

NWS Newport/Morehead City, NC issued this dense fog advisory at Feb 28, 2021, 10:14 PM EST for Carteret County, Onslow County, North Carolina. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Feb 28, 2021, 10:14 PM EST (03:14 UTC)
Expired: Mar 1, 2021, 11:22 AM EST
In force: 13 hr
Issued by: NWS Newport/Morehead City, NC

Counties Carteret County, NC, Onslow County, NC

The radar

The Morehead City radar (KMHX), 9 km from the middle of the area, began a volume at 03:14 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, 3.2 hours before the alert went out and 301 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: 1290 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 167 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 Newport/Morehead City, NC wrote its last area forecast discussion before this dense fog advisory went out at Feb 28, 9:19 PM EST, 55 minutes earlier.

Area forecast discussion, Feb 28, 9:19 PM EST, 55 minutes before

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Hazardous weather outlook, Feb 28, 10:14 PM EST, 0 minutes before

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In the hours before

Special weather statement, Feb 28, 9:21 PM EST, 53 minutes before

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The office that day

Everything else NWS Newport/Morehead City, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 1, 10:16 AM EST	Special Weather Statement	MHX	Dare, Tyrrell, Washington	59 min
Mar 1, 10:29 AM EST	Special Weather Statement	MHX	Beaufort, Craven, Duplin, Jones, Lenoir, Onslow and 1 more	61 min
Mar 1, 11:06 AM EST	Special Marine Warning	MHX		39 min
Mar 1, 11:11 AM EST	Special Weather Statement	MHX	Dare	34 min
Mar 1, 11:28 AM EST	Special Marine Warning	MHX		62 min
Mar 1, 11:34 AM EST	Special Weather Statement	MHX	Carteret, Onslow	56 min

Nearby

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.