647  
WHUS52 KCHS 230007  
SMWCHS  
AMZ354-230130-  
/O.NEW.KCHS.MA.W.0113.210923T0007Z-210923T0130Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE CHARLESTON SC  
807 PM EDT WED SEP 22 2021  
 
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM ...  
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY...  
 
* UNTIL 930 PM EDT.  
 
* AT 807 PM EDT, STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE  
EXTENDING FROM 7 NM WEST OF SAPELO CHANNELBUOY 3 TO NEAR ALTAMAHA  
SOUND, MOVING EAST AT 15 KNOTS.  
 
HAZARD...WIND GUSTS 35 KNOTS OR GREATER.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND  
SUDDENLY HIGHER WAVES.  
 
* LOCATIONS IMPACTED INCLUDE...  
TUG RIO CARONI... A L T BUOY...  
DOBOY SOUND BUOY D... JOHN BIRD...  
GRAYS REEF BUOY... D R H BUOY...  
K T K BUOY... SAPELO CHANNELBUOY 3...  
SAPELO BUOY S... ALTAMAHA SOUND...  
STEEL BARGE MODENA... BUOY B H...  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MOVE TO SAFE HARBOR IMMEDIATELY AS GUSTY WINDS AND HIGH WAVES ARE  
EXPECTED.  
 
FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. IF CAUGHT ON THE  
OPEN WATER STAY BELOW DECK IF POSSIBLE, KEEP AWAY FROM UNGROUNDED  
METAL OBJECTS.  
 

 
 
LAT...LON 3135 8144 3145 8138 3146 8133 3144 8127  
3157 8120 3151 8082 3138 8087 3129 8093  
3124 8094 3128 8123 3128 8132 3130 8137  
3128 8138 3131 8144  
TIME...MOT...LOC 0007Z 291DEG 17KT 3150 8127 3132 8137  
 
HAIL...0.00IN  
WIND...>34KTS  
 

 
 
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