526
WHUS42 KCHS 190141
CFWCHS
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
941 PM EDT MON MAY 18 2026
SCZ149-150-190400-
/O.CON.KCHS.CF.Y.0012.000000T0000Z-260519T0400Z/
COASTAL COLLETON-CHARLESTON-
941 PM EDT MON MAY 18 2026
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...
* WHAT...UP TO ONE HALF FOOT OF INUNDATION ABOVE GROUND LEVEL
ALONG SHORELINES AND TIDAL WATERWAYS (7.1 TO 7.3 FEET MEAN
LOWER LOW WATER AT CHARLESTON).
* WHERE...COASTAL COLLETON AND CHARLESTON COUNTIES.
* WHEN...UNTIL MIDNIGHT EDT TONIGHT.
* IMPACTS...THIS COULD RESULT IN SOME ROADS BECOMING IMPASSABLE.
* ADDITIONAL DETAILS...HIGH TIDE WILL OCCUR AROUND 10:19 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.
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
-------- --------- --------- --------- ------- --------
18/10 PM 7.2 1.4 0.6 N/A MINOR
19/11 AM 5.3 -0.5 0.3 N/A NONE
19/11 PM 6.8 1.0 0.4 N/A NONE
20/12 PM 5.2 -0.6 0.3 N/A NONE
21/12 AM 6.5 0.7 0.4 N/A NONE
21/01 PM 5.3 -0.5 0.4 N/A NONE
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