Alert archive / North Carolina / High Surf Advisories in 2023

High Surf Advisory 9, NWS Wilmington, NC

September 21, 2023New Hanover County, Pender County, North Carolina

NWS Wilmington, NC issued this high surf advisory at Sep 21, 2023, 8:03 PM EDT for New Hanover County, Pender County, North Carolina. It was in force for 39 hr.

The area

The counties it named.

The facts

Issued
Sep 21, 2023, 8:03 PM EDT (00:03 UTC)
Expired
Sep 23, 2023, 11:07 AM EDT
In force
39 hr
Issued by
NWS Wilmington, NC

Counties New Hanover County, NC, Pender County, NC

The radar

The Wilmington radar (KLTX), 65 km from the middle of the area, began a volume at 00:03 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

Newport, NC (KMHX), launched 00:00Z, 0.1 hours before the alert went out and 103 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, Newport, NC at 00:00Z on 2023-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 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, Newport, NC at 00:00Z on 2023-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 square meters per square second.193958Sfc1 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
4 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1283 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 8:03 PM EDTRip Current StatementILMNew Hanover, Pender24 hr
Sep 22, 2:35 PM EDTFlood WatchILMBrunswick, New Hanover, Pender17 hr
Sep 22, 3:00 PM EDTRiver Flood WarningILMPender20 hr

Nearby

High Surf Advisories in North Carolina, 2023Every high surf advisory in 2023

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.