Coastal Flood Warnings/Watches/Statements
Issued by NWS Newport/Morehead, NC
Issued by NWS Newport/Morehead, NC
537
WHUS42 KMHX 182109
CFWMHX
Coastal Hazard Message
National Weather Service Newport/Morehead City NC
509 PM EDT Mon Aug 18 2025
NCZ203>205-190915-
/O.CAN.KMHX.CF.A.0001.250819T1600Z-250823T0400Z/
/O.CON.KMHX.SU.Y.0006.250819T1600Z-250823T0400Z/
Northern Outer Banks-Ocracoke Island-Hatteras Island-
509 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO
MIDNIGHT EDT FRIDAY NIGHT...
* WHAT...For the High Surf Advisory, large breaking waves of 15
to 20+ feet expected in the surf zone.
* WHERE...The beaches from Duck to Ocracoke.
* WHEN...From noon Tuesday to midnight EDT Friday night.
* IMPACTS...Extreme beach and coastal damage is likely along the
oceanside, resulting in a significant threat to life and
property. Large dangerous waves will likely inundate and destroy
protective dune structures. Severe flooding will likely extend
inland from the waterfront causing flooding of many homes and
businesses with some structural damage possible. Numerous roads
will likely be impassable under several feet of water and
vehicles will likely be submerged. Actions will need to be taken
to protect life and property. Very dangerous swimming and
surfing conditions expected, as well as the wave action
resulting in significant beach erosion.
* ADDITIONAL DETAILS...A storm surge watch has been issued for the
Outer Banks. This is expected to be a prolonged duration event,
with the potential for portions of NC-12 and secondary roads
along the Outer Banks, in particular on Hatteras and Ocracoke
Islands, to be impassable and/or inaccessible for several days
due to significant wave run up. Minor soundside flooding of 1
to 2 feet above ground level will also be possible for areas
adjacent to the southern Pamlico Sound.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
$$
NCZ195-199-190915-
/O.CON.KMHX.SU.Y.0006.250819T1600Z-250822T0000Z/
/O.CON.KMHX.CF.A.0001.250819T1600Z-250822T0000Z/
West Carteret-Coastal Onslow-
509 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM
EDT THURSDAY...
...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH THURSDAY EVENING...
* WHAT...For the High Surf Advisory, large breaking waves of 8 to
15 feet expected in the surf zone. For the Coastal Flood Watch,
moderate oceanside inundation above ground level likely in low-
lying areas near shorelines and tidal waterways.
* WHERE...West Carteret and Coastal Onslow Counties.
* WHEN...For the High Surf Advisory, from noon Tuesday to 8 PM
EDT Thursday. For the Coastal Flood Watch, from Tuesday
afternoon through Thursday evening.
* IMPACTS...Moderate inundation 2 to 3 feet above ground level is
likely along the oceanside. Large waves will likely cause
severe beach and coastal damage. Waves will likely severely
damage dune structures in some areas. This will likely result in
damage to property along the oceanside including some property
located immediately behind dune structures. Actions should be
taken to protect life and property. Very dangerous swimming and
surfing conditions expected, as well as the wave action
resulting in significant beach erosion. Rip currents can sweep
even the best swimmers away from shore into deeper water.
* ADDITIONAL DETAILS...This is expected to be a prolonged duration
event, with the potential for roads along the immediate coast to
be impassable at times, especially around times of high tide.
Areas of greatest concern: North Topsail Beach to Atlantic
Beach.
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.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
Time of high total tides are approximate to the nearest hour.
Beaufort Marine Lab NC
MLLW Categories - Minor 5.0 ft, Moderate 5.5 ft, Major 6.5 ft
MHHW Categories - Minor -0.8 ft, Moderate -0.3 ft, Major 0.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
18/04 PM 4.5 -1.3 0.7 1 None
19/05 AM 3.6 -2.2 0.7 1 None
19/06 PM 4.8 -1.0 0.9 1 None
20/05 AM 3.8 -2.0 0.9 1 None
20/07 PM 5.0 -0.8 1.1 1 Minor
21/07 AM 4.3 -1.5 1.1 1 None
&&
$$
NCZ196-190915-
/O.EXT.KMHX.CF.A.0001.250819T1600Z-250822T2000Z/
/O.CON.KMHX.SU.Y.0006.250819T1600Z-250823T0400Z/
East Carteret-
509 PM EDT Mon Aug 18 2025
...COASTAL FLOOD WATCH NOW IN EFFECT FROM TUESDAY AFTERNOON
THROUGH FRIDAY AFTERNOON SOUTH OF CAPE LOOKOUT...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO
MIDNIGHT EDT FRIDAY NIGHT...
* WHAT...For the High Surf Advisory, large breaking waves of 15 to
20+ feet expected in the surf zone north of Cape Lookout, and 8
to 15 feet south of Cape Lookout. For the Coastal Flood Watch,
moderate oceanside inundation above ground level likely in low-
lying areas near shorelines and tidal waterways.
* WHERE...East Carteret County.
* WHEN...For the Coastal Flood Watch, from Tuesday afternoon
through Friday afternoon. For the High Surf Advisory, from
noon Tuesday to midnight EDT Friday night.
* IMPACTS...Moderate beach and coastal damage is likely along the
oceanside, with greatest impacts north of Cape Lookout,
resulting in a significant threat to life and property. Large
dangerous waves will likely inundate and destroy protective dune
structures. Severe flooding will likely extend inland from the
waterfront causing flooding of many homes and businesses with
some structural damage possible. Actions will need to be taken
to protect life and property. Very dangerous swimming and
surfing conditions expected, as well as the wave action
resulting in significant beach erosion. Rip currents can sweep
even the best swimmers away from shore into deeper water.
* ADDITIONAL DETAILS...A storm surge watch has been issued for the
areas north of Cape Lookout. This is expected to be a prolonged
duration event. Minor soundside flooding will also be possible
if stronger winds develop over the Pamlico Sound.
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.
Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.
&&
Time of high total tides are approximate to the nearest hour.
Beaufort Marine Lab NC
MLLW Categories - Minor 5.0 ft, Moderate 5.5 ft, Major 6.5 ft
MHHW Categories - Minor -0.8 ft, Moderate -0.3 ft, Major 0.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
18/04 PM 4.5 -1.3 0.7 1 None
19/05 AM 3.6 -2.2 0.7 1 None
19/06 PM 4.8 -1.0 0.9 1 None
20/05 AM 3.8 -2.0 0.9 1 None
20/07 PM 5.0 -0.8 1.1 1 Minor
21/07 AM 4.3 -1.5 1.1 1 None
&&
$$