High Surf Advisory

Coastal Hazard Message
National Weather Service Charleston SC
931 PM EDT Wed Oct 8 2025

SCZ049-050-090945-
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/O.NEW.KCHS.CF.W.0002.251009T1200Z-251010T1900Z/
/O.CON.KCHS.SU.Y.0008.251009T1800Z-251012T1200Z/
/O.CON.KCHS.RP.S.0010.251009T1200Z-251010T0000Z/
Coastal Colleton-Charleston-
931 PM EDT Wed Oct 8 2025

...COASTAL FLOOD WARNING IN EFFECT FROM 8 AM THURSDAY TO 3 PM EDT
FRIDAY...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THURSDAY
THROUGH THURSDAY EVENING...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO
8 AM EDT SUNDAY...

* WHAT...For the Coastal Flood Warning, up to two feet of
  inundation above ground level possible along shorelines and
  tidal waterways (8.0 to 8.2 feet Mean Lower Low Water at
  Charleston Thursday and 8.4 to 8.6 feet Mean Lower Low Water
  Friday). For the High Rip Current Risk, dangerous rip currents
  expected. For the High Surf Advisory, large breaking waves of 5
  to 6 feet expected in the surf zone.

* WHERE...Coastal Colleton and Charleston Counties.

* WHEN...For the Coastal Flood Warning, from 8 AM Thursday to 3
  PM EDT Friday. For the High Rip Current Risk, from 8 AM EDT
  Thursday through Thursday evening. For the High Surf Advisory,
  from 2 PM Thursday to 8 AM EDT Sunday.

* IMPACTS...Significant saltwater inundation will render
  numerous roads impassable. Properties may also flood.
  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 10:06 AM
  Thursday at Charleston. Saltwater inundation will be possible
  several before and after high tide.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take the necessary actions to protect flood-prone property. If
travel is required, do not drive around barricades or through
water of unknown depth.

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
 --------  ---------  ---------  ---------  -------  --------
 08/10 PM     6.6        0.8        0.5       N/A      None
 09/10 AM     8.1        2.3        1.0       N/A     Major
 09/10 PM     7.6        1.8        1.8       N/A    Moderate
 10/11 AM     8.5        2.7        1.6       N/A     Major
 10/11 PM     7.1        1.3        1.5       N/A     Minor
 11/12 PM     8.0        2.2        1.3       N/A     Major

&&

$$