640
WHUS72 KCHS 181735
MWWCHS

URGENT - MARINE WEATHER MESSAGE
National Weather Service Charleston SC
135 PM EDT Mon Aug 18 2025

AMZ350-190145-
/O.EXT.KCHS.SC.Y.0050.250819T0800Z-250822T1800Z/
Waters from South Santee River to Edisto Beach SC out 20 NM-
135 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 AM TUESDAY TO 2 PM
EDT FRIDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and
  seas 8 to 13 ft expected.

* WHERE...South Santee River to Edisto Beach out 20 NM.

* WHEN...From 4 AM Tuesday to 2 PM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

AMZ352-190145-
/O.EXT.KCHS.SC.Y.0050.250819T0800Z-250822T1800Z/
Waters from Edisto Beach SC to Savannah GA out 20 NM-
135 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 AM TUESDAY TO 2 PM
EDT FRIDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and
  seas 6 to 11 ft expected.

* WHERE...Edisto Beach to Savannah out 20 NM.

* WHEN...From 4 AM Tuesday to 2 PM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

AMZ354-190145-
/O.EXT.KCHS.SC.Y.0050.250819T0800Z-250822T1800Z/
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
135 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 AM TUESDAY TO 2 PM
EDT FRIDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and
  seas 6 to 11 ft expected.

* WHERE...Savannah to Altamaha Sound out 20 NM.

* WHEN...From 4 AM Tuesday to 2 PM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

AMZ374-190145-
/O.EXT.KCHS.SC.Y.0050.250819T0400Z-250823T1200Z/
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
135 PM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
8 AM EDT SATURDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and
  seas 8 to 13 ft expected.

* WHERE...Savannah to Altamaha Sound from 20 to 60 NM.

* WHEN...From midnight tonight to 8 AM EDT Saturday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$