Alert archive / North Carolina / High Surf Advisories in 2020

High Surf Advisory 16, NWS Newport/Morehead City, NC

November 29, 20204 counties in North Carolina

NWS Newport/Morehead City, NC issued this high surf advisory at Nov 29, 2020, 3:14 AM EST for 4 counties in North Carolina. It took effect at Nov 30, 2020, 7:00 AM EST. It was in force for 28 hr.

The area

The counties it named.

The facts

Issued
Nov 29, 2020, 3:14 AM EST (08:14 UTC)
In effect from
Nov 30, 2020, 7:00 AM EST
Expired
Dec 1, 2020, 11:00 AM EST
In force
28 hr
Issued by
NWS Newport/Morehead City, NC

Counties Carteret County, NC, Dare County, NC, Hyde County, NC, Onslow County, NC

The radar

The Morehead City radar (KMHX), 61 km from the middle of the area, began a volume at 08:15 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, 8.2 hours before the alert went out and 325 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 2020-11-29Temperature 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, Greensboro/Hi Pt, NC at 00:00Z on 2020-11-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939587897Sfc1 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
2027 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 29, 3:14 AM ESTCoastal Flood AdvisoryMHXDare, Hyde56 hr
Nov 29, 3:20 AM ESTWind AdvisoryMHXBeaufort, Carteret, Craven, Dare, Duplin, Greene and 9 more40 hr
Nov 29, 3:36 AM ESTGale WarningMHX58 hr
Nov 29, 3:36 AM ESTSmall Craft AdvisoryMHX24 hr

Nearby

High Surf Advisories in North Carolina, 2020Every high surf advisory in 2020

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.