Coastal Flood Warnings/Watches/Statements
Issued by NWS Charleston, SC

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925
WHUS42 KCHS 201324
CFWCHS

Coastal Hazard Message
National Weather Service Charleston SC
924 AM EDT Wed Aug 20 2025

GAZ117-119-139-141-SCZ048-051-202130-
/O.EXA.KCHS.CF.Y.0012.250820T2100Z-250821T0100Z/
/O.CON.KCHS.SU.Y.0006.000000T0000Z-250822T0000Z/
/O.CON.KCHS.RP.S.0005.000000T0000Z-250821T0000Z/
Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh-
Beaufort-Coastal Jasper-
924 AM EDT Wed Aug 20 2025

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THURSDAY...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
9 PM EDT THIS EVENING...

* WHAT...For the High Surf Advisory, large breaking waves up to 6
  feet in the surf zone. For the High Rip Current Risk, dangerous
  rip currents. For the Coastal Flood Advisory, up to one half
  foot of inundation above ground level expected along shorelines
  and tidal waterways (9.5 to 9.7 feet Mean Lower Low Water at
  Fort Pulaski).

* WHERE...In Georgia, Coastal Bryan, Coastal Chatham, Coastal
  Liberty and Coastal McIntosh Counties. In South Carolina,
  Beaufort and Coastal Jasper Counties.

* WHEN...For the High Surf Advisory, until 8 PM EDT Thursday.
  For the High Rip Current Risk, until 8 PM EDT this evening.
  For the Coastal Flood Advisory, from 5 PM this afternoon to 9
  PM EDT this evening.

* IMPACTS...Saltwater inundation will impact some roads.
  Dangerous swimming and surfing conditions and localized beach
  erosion. Rip currents can sweep even the best swimmers away
  from shore into deeper water.

* ADDITIONAL DETAILS...High tide will occur around 6:49 PM today
  at Fort Pulaski. Saltwater inundation will be possible 1 to 2
  hours before and after high tide.

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.

Visit water.weather.gov for additional water level and flood
impact information.

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

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

Fort Pulaski GA
MLLW Categories - Minor 9.5 ft, Moderate 10.0 ft, Major 10.5 ft
MHHW Categories - Minor 2.0 ft, Moderate 2.5 ft, Major 3.0 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 20/07 PM     9.6        2.1        1.6       N/A     Minor
 21/07 AM     8.3        0.8        1.5       N/A      None
 21/08 PM     9.4        1.9        1.4       N/A      None
 22/08 AM     8.2        0.7        1.1       N/A      None
 22/08 PM     9.1        1.6        1.1       N/A      None

&&

$$

SCZ049-050-202130-
/O.CON.KCHS.SU.Y.0006.000000T0000Z-250822T0000Z/
/O.CON.KCHS.CF.Y.0012.250820T2100Z-250821T0100Z/
/O.CON.KCHS.RP.S.0005.000000T0000Z-250821T0000Z/
Coastal Colleton-Charleston-
924 AM EDT Wed Aug 20 2025

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THURSDAY...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 9 PM EDT THIS EVENING...

* WHAT...For the High Surf Advisory, large breaking waves up to 6
  feet in the surf zone. For the High Rip Current Risk, dangerous
  rip currents. For the Coastal Flood Advisory, up to one foot of
  inundation above ground level expected along shorelines and
  tidal waterways (7.7 to 7.9 feet Mean Lower Low Water at
  Charleston).

* WHERE...Coastal Colleton and Charleston Counties.

* WHEN...For the High Surf Advisory, until 8 PM EDT Thursday.
  For the High Rip Current Risk, until 8 PM EDT this evening.
  For the Coastal Flood Advisory, from 5 PM this afternoon to 9
  PM EDT this evening.

* IMPACTS...This will result in some roads becoming impassable
  and minor flooding of properties. Dangerous swimming and
  surfing conditions and localized beach erosion. Rip currents
  can sweep even the best swimmers away from shore into deeper
  water.

* ADDITIONAL DETAILS...High tide will occur around 6:47 PM today
  at Charleston. Saltwater inundation will be possible 1 to 2
  hours before and after high tide.

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.

Visit water.weather.gov for additional water level and flood
impact information.

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

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

Charleston Harbor SC
MLLW Categories - Minor 7.0 ft, Moderate 7.5 ft, Major 8.0 ft
MHHW Categories - Minor 1.2 ft, Moderate 1.7 ft, Major 2.2 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 20/07 PM     7.8        2.0        1.6       N/A    Moderate
 21/07 AM     6.7        0.9        1.5       N/A      None
 21/08 PM     7.5        1.7        1.3       N/A    Moderate
 22/08 AM     6.4        0.6        1.0       N/A      None
 22/08 PM     7.2        1.4        1.0       N/A     Minor

&&

$$