Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Wilmington, NC

August 20, 2021New Hanover County, North Carolina

NWS Wilmington, NC issued this special weather statement at Aug 20, 2021, 2:13 PM EDT for New Hanover County, North Carolina. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 20, 2021, 2:13 PM EDT (18:13 UTC)
Expired: Aug 20, 2021, 3:00 PM EDT
In force: 47 min
Issued by: NWS Wilmington, NC
Hail: 0.00 in
Wind: 30

County New Hanover County, NC

The radar

The Wilmington radar (KLTX), 57 km from the middle of the area, began a volume at 18:15 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

Newport, NC (KMHX), launched 12:00Z, 6.2 hours before the alert went out and 112 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: 2221 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.5

Open this sounding in Storm Lab

The text

As transmitted.

617 
WWUS82 KILM 201813
SPSILM

Special Weather Statement
National Weather Service Wilmington NC
213 PM EDT Fri Aug 20 2021
 
NCZ105>110-201900-
Inland New Hanover NC-Inland Brunswick NC-Coastal Pender NC-
Inland Pender NC-Coastal New Hanover NC-Coastal Brunswick NC-
213 PM EDT Fri Aug 20 2021

...A strong thunderstorm will impact portions of New Hanover,
southeastern Pender and southeastern Brunswick Counties through 300
PM EDT...

At 212 PM EDT, Doppler radar was tracking a strong thunderstorm near
Kure Beach, moving northeast at 25 mph.

HAZARD...Winds in excess of 30 mph and frequent lightning.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Wilmington, Carolina Beach, Wrightsville Beach, Kure Beach, Surf
City, South Masonboro Island, Snows Cut, Figure Eight Island, Rich
Inlet, North Masonboro Island, Hampstead, Boiling Spring Lakes, St.
James, Topsail Beach, Myrtle Grove, Murrayville, Masonboro,
University Of North Carolina At Wilmington, Scotts Hill and Ogden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3432 7769 3423 7778 3415 7784 3395 7793
      3393 7814 3398 7816 3405 7811 3445 7772
      3443 7754
TIME...MOT...LOC 1812Z 245DEG 23KT 3402 7796 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

$$

21

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 10:45 PM EDT	Special Weather Statement	ILM	Robeson	30 min
Aug 20, 3:46 AM EDT	Small Craft Advisory	ILM		25 hr
Aug 20, 3:53 AM EDT	Coastal Flood Advisory	ILM	New Hanover	19 hr
Aug 20, 1:36 PM EDT	Special Weather Statement	ILM	New Hanover	39 min
Aug 20, 2:22 PM EDT	Severe Thunderstorm Warning	ILM	New Hanover	23 min
Aug 20, 2:29 PM EDT	Areal Flood Advisory	ILM	Brunswick, New Hanover, Pender	75 min
Aug 20, 3:03 PM EDT	Special Weather Statement	ILM	New Hanover	27 min
Aug 19, 8:52 PM EDT	Special Weather Statement	ILM	Darlington	53 min

Nearby

Special Weather Statements in North Carolina, 2021 Every special weather statement 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.