Alert archive / North Carolina / Beach Hazards Statements in 2021

Beach Hazards Statement 1, NWS Wilmington, NC

April 10, 2021Brunswick County, New Hanover County, Pender County, North Carolina; Georgetown County, South Carolina

NWS Wilmington, NC issued this beach hazards statement at Apr 10, 2021, 8:02 PM EDT for Brunswick County, New Hanover County, Pender County, North Carolina; Georgetown County, South Carolina. It took effect at Apr 11, 2021, 6:00 AM EDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Apr 10, 2021, 8:02 PM EDT (00:02 UTC)
In effect from
Apr 11, 2021, 6:00 AM EDT
Expired
Apr 11, 2021, 8:00 PM EDT
In force
14 hr
Issued by
NWS Wilmington, NC

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

The radar

The Wilmington radar (KLTX), 11 km from the middle of the area, began a volume at 00:05 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, 0.0 hours before the alert went out and 156 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 2021-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 87 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 00:00Z on 2021-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
87 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

007 
WHUS42 KILM 110002
CFWILM

Coastal Hazard Message
National Weather Service Wilmington NC
802 PM EDT Sat Apr 10 2021

NCZ107-110300-
/O.CON.KILM.CF.Y.0034.210411T0100Z-210411T0300Z/
Inland New Hanover-
802 PM EDT Sat Apr 10 2021

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHAT...Up to one half foot of inundation above ground level 
  expected in low-lying areas near shorelines and tidal 
  waterways.

* WHERE...The lower Cape Fear River including downtown 
  Wilmington.

* WHEN...From 9 PM to 11 PM EDT this evening.

* IMPACTS...The lowest parts of USS North Carolina Road and low
  spots of Battleship Road begin to flood. Water begins to spread
  out of the storm drains onto Water Street just south of Market
  Street in downtown Wilmington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

&&

Time of high total tides are approximate to the nearest hour.

Cape Fear River at Wilmington
MLLW Categories - Minor 5.5 ft, Moderate 6.7 ft, Major 10.0 ft
MHHW Categories - Minor 0.8 ft, Moderate 2.0 ft, Major 5.3 ft

             Total      Total    Departure                   
 Day/Time    Tide       Tide     from Norm   Waves    Flood  
            ft MLLW    ft MHHW       ft       ft      Impact 
 --------  ---------  ---------  ---------  -------  --------
 10/10 PM     5.6        0.9        0.7        1      Minor    
 11/10 AM     5.3        0.6        0.7        1       None    
 11/11 PM     5.8        1.1        0.8        1      Minor    
 12/11 AM     5.2        0.5        0.7        1       None    
 12/11 PM     5.7        1.0        0.8        1      Minor    
 13/12 PM     5.2        0.5        0.8        1       None

&&

$$

NCZ106-108-SCZ056-110300-
/O.NEW.KILM.BH.S.0001.210411T1000Z-210412T0000Z/
Coastal Pender-Coastal New Hanover-Coastal Georgetown-
802 PM EDT Sat Apr 10 2021

...BEACH HAZARDS STATEMENT IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
SUNDAY EVENING...

* WHAT...Strong south to north longshore current expected.
  Moderate risk of rip currents also in effect.

* WHERE...In South Carolina, Coastal Georgetown County. In North 
  Carolina, Coastal Pender and Coastal New Hanover Counties.

* WHEN...From 6 AM EDT Sunday through Sunday evening.

* IMPACTS...Longshore currents can sweep swimmers and surfers into
  rip currents, piers, jetties, and other hazardous areas. Rip
  currents can sweep even the best swimmers away from shore into
  deeper water.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Often, if the longshore current is strong enough, it will sweep 
swimmers off their feet, making it difficult to return to shore.

Caution should be used when in or near the water. Check with the
lifeguards before entering the ocean for possible hazards you may
be swept into.

&&

$$

19
4 follow-up statements
655 
WHUS42 KILM 110215
CFWILM

Coastal Hazard Message
National Weather Service Wilmington NC
1015 PM EDT Sat Apr 10 2021

NCZ107-110315-
/O.CAN.KILM.CF.Y.0034.000000T0000Z-210411T0300Z/
Inland New Hanover-
1015 PM EDT Sat Apr 10 2021

...COASTAL FLOOD ADVISORY IS CANCELLED...

$$

NCZ106-108-SCZ056-111015-
/O.CON.KILM.BH.S.0001.210411T1000Z-210412T0000Z/
Coastal Pender-Coastal New Hanover-Coastal Georgetown-
1015 PM EDT Sat Apr 10 2021

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 6 AM EDT SUNDAY
THROUGH SUNDAY EVENING...

* WHAT...Strong south to north longshore current expected.
  Moderate risk of rip currents also in effect.

* WHERE...In South Carolina, Coastal Georgetown County. In North 
  Carolina, Coastal Pender and Coastal New Hanover Counties.

* WHEN...Sunday.

* IMPACTS...Longshore currents can sweep swimmers and surfers into
  rip currents, piers, jetties, and other hazardous areas. Rip
  currents can sweep even the best swimmers away from shore into
  deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Often, if the longshore current is strong enough, it will sweep 
swimmers off their feet, making it difficult to return to shore.

Caution should be used when in or near the water. Check with the
lifeguards before entering the ocean for possible hazards you may
be swept into.

&&

$$
109 
WHUS42 KILM 110841
CFWILM

Coastal Hazard Message
National Weather Service Wilmington NC
441 AM EDT Sun Apr 11 2021

NCZ110-120000-
/O.EXA.KILM.BH.S.0001.210411T1000Z-210412T0000Z/
Coastal Brunswick-
441 AM EDT Sun Apr 11 2021

...BEACH HAZARDS STATEMENT IN EFFECT THROUGH THIS EVENING...

* WHAT...Strong south to north longshore current expected. 
  Moderate risk of rip currents also in effect.

* WHERE...In South Carolina, Coastal Georgetown County. In North 
  Carolina, Coastal Pender and Coastal New Hanover Counties.

* WHEN...Sunday.

* IMPACTS...Longshore currents can sweep swimmers and surfers 
  into rip currents, piers, jetties, and other hazardous areas. 
  Rip currents can sweep even the best swimmers away from shore 
  into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

NCZ106-108-SCZ056-120000-
/O.CON.KILM.BH.S.0001.210411T1000Z-210412T0000Z/
Coastal Pender-Coastal New Hanover-Coastal Georgetown-
441 AM EDT Sun Apr 11 2021

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
EVENING...

* WHAT...Strong south to north longshore current expected. 
  Moderate risk of rip currents also in effect.

* WHERE...In South Carolina, Coastal Georgetown County. In North 
  Carolina, Coastal Pender and Coastal New Hanover Counties.

* WHEN...Sunday.

* IMPACTS...Longshore currents can sweep swimmers and surfers 
  into rip currents, piers, jetties, and other hazardous areas. 
  Rip currents can sweep even the best swimmers away from shore 
  into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$
43
589 
WHUS42 KILM 111726
CFWILM

Coastal Hazard Message
National Weather Service Wilmington NC
126 PM EDT Sun Apr 11 2021

NCZ110-111830-
/O.CAN.KILM.BH.S.0001.000000T0000Z-210412T0000Z/
Coastal Brunswick-
126 PM EDT Sun Apr 11 2021

...BEACH HAZARDS STATEMENT IS CANCELLED...

Winds have turned more southerly, and therefore threat of strong 
west to east longshore current for Brunswick county beaches is
diminished.

$$

NCZ106-108-SCZ056-120000-
/O.CON.KILM.BH.S.0001.000000T0000Z-210412T0000Z/
Coastal Pender-Coastal New Hanover-Coastal Georgetown-
126 PM EDT Sun Apr 11 2021

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Strong south to north longshore current expected. 
  Moderate risk of rip currents also in effect.

* WHERE...In South Carolina, Coastal Georgetown County. In North 
  Carolina, Coastal Pender and Coastal New Hanover Counties.

* WHEN...Sunday.

* IMPACTS...Longshore currents can sweep swimmers and surfers 
  into rip currents, piers, jetties, and other hazardous areas. 
  Rip currents can sweep even the best swimmers away from shore 
  into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain out of the water to avoid hazardous swimming conditions.

&&

$$

19
158 
WHUS42 KILM 120007
CFWILM

Coastal Hazard Message
National Weather Service Wilmington NC
807 PM EDT Sun Apr 11 2021

NCZ106-108-SCZ056-120115-
/O.EXP.KILM.BH.S.0001.000000T0000Z-210412T0000Z/
Coastal Pender-Coastal New Hanover-Coastal Georgetown-
807 PM EDT Sun Apr 11 2021

...BEACH HAZARDS STATEMENT HAS EXPIRED...

Winds will weaken and turn westerly tonight, and therefore the
strong longshore current risk is diminished.

$$

19

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 12:01 AM EDTSpecial Weather StatementILMBladen, Brunswick, Columbus89 min
Apr 11, 1:25 AM EDTSpecial Weather StatementILMBrunswick, New Hanover, Pender80 min

Nearby

Beach Hazards Statements in North Carolina, 2021Beach Hazards Statements in South Carolina, 2021Every beach hazards 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.