Alert archive / North Carolina / High Surf Advisories in 2020

High Surf Advisory 1, NWS Wilmington, NC

April 13, 2020Brunswick County, New Hanover County, Pender County, North Carolina; Georgetown County, Horry County, South Carolina

NWS Wilmington, NC issued this high surf advisory at Apr 13, 2020, 4:26 AM EDT for Brunswick County, New Hanover County, Pender County, North Carolina; Georgetown County, Horry County, South Carolina. It took effect at Apr 13, 2020, 5:00 AM EDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Apr 13, 2020, 4:26 AM EDT (08:26 UTC)
In effect from: Apr 13, 2020, 5:00 AM EDT
Expired: Apr 13, 2020, 4:00 PM EDT
In force: 11 hr
Issued by: NWS Wilmington, NC

Counties Brunswick County, NC, New Hanover County, NC, Pender County, NC, Georgetown County, SC, Horry County, SC

The radar

The Wilmington radar (KLTX), 3 km from the middle of the area, began a volume at 08:28 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, 8.4 hours before the alert went out and 168 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: 1264 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 247 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 high surf 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 high surf advisory went out at Apr 13, 2:50 AM EDT, 1 hour 36 minutes earlier.

Area forecast discussion, Apr 13, 2:50 AM EDT, 1 hour 36 minutes before

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Hazardous weather outlook, Apr 13, 3:15 AM EDT, 1 hour 11 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
Apr 13, 7:32 AM EDT	Severe Thunderstorm Warning	ILM	Bladen, Robeson	28 min
Apr 13, 7:53 AM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus, Robeson	52 min
Apr 13, 8:10 AM EDT	Tornado Warning	ILM	Bladen, Columbus, Pender	35 min
Apr 13, 8:19 AM EDT	Severe Thunderstorm Warning	ILM	Bladen, Brunswick, Columbus, Pender	26 min
Apr 13, 8:42 AM EDT	Severe Thunderstorm Warning	ILM	Bladen, Brunswick, Columbus, New Hanover, Pender	48 min
Apr 13, 8:43 AM EDT	Special Marine Warning	ILM		29 min
Apr 13, 8:50 AM EDT	Tornado Warning	ILM	Bladen, Brunswick, Columbus, Pender	25 min
Apr 13, 9:01 AM EDT	Severe Thunderstorm Warning	ILM	Brunswick, Columbus, New Hanover	44 min
Apr 13, 9:12 AM EDT	Special Marine Warning	ILM		63 min
Apr 13, 9:15 AM EDT	Tornado Warning	ILM	Pender	30 min
Apr 13, 9:17 AM EDT	Severe Thunderstorm Warning	ILM	Brunswick, New Hanover, Pender	28 min
Apr 13, 9:21 AM EDT	Tornado Warning Tornado observed	ILM	Brunswick, New Hanover	24 min
Apr 13, 9:40 AM EDT	Tornado Warning	ILM	Brunswick, New Hanover	17 min
Apr 13, 9:45 AM EDT	Severe Thunderstorm Warning	ILM	Brunswick, New Hanover, Pender	30 min
Apr 13, 10:07 AM EDT	Special Marine Warning	ILM		38 min
Apr 13, 10:26 AM EDT	Special Marine Warning	ILM		64 min
Apr 13, 6:05 PM EDT	Small Craft Advisory	ILM		21 hr
Apr 13, 6:32 AM EDT	Severe Thunderstorm Warning	ILM	Darlington, Florence, Marlboro	28 min
Apr 13, 6:58 AM EDT	Severe Thunderstorm Warning	ILM	Darlington, Dillon, Florence, Marlboro	47 min
Apr 13, 7:04 AM EDT	Severe Thunderstorm Warning	ILM	Dillon, Florence, Horry, Marion, Williamsburg	41 min
Apr 13, 7:41 AM EDT	Severe Thunderstorm Warning	ILM	Georgetown, Horry, Marion, Williamsburg	34 min
Apr 13, 7:45 AM EDT	Severe Thunderstorm Warning	ILM	Dillon, Florence, Horry, Marion, Williamsburg	30 min
Apr 13, 7:58 AM EDT	Tornado Warning	ILM	Georgetown, Williamsburg	32 min
Apr 13, 8:15 AM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Horry, Marion, Williamsburg	45 min
Apr 13, 8:38 AM EDT	Tornado Warning	ILM	Georgetown, Horry	26 min

Nearby

High Surf Advisories in North Carolina, 2020 High Surf Advisories in South Carolina, 2020 Every 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.