268  
WHUS54 KMOB 191743  
SMWMOB  
GMZ632-650-191845-  
/O.NEW.KMOB.MA.W.0297.170819T1743Z-170819T1845Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE MOBILE AL  
1243 PM CDT SAT AUG 19 2017  
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT 20 NM...  
MISSISSIPPI SOUND...  
 
* UNTIL 145 PM CDT  
 
* AT 1242 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER  
PORTERSVILLE BAY...OR 8 NM SOUTHEAST OF GRAND BAY...MOVING SOUTH  
AT 20 KNOTS.  
 
HAZARD...WIND GUSTS 34 KNOTS OR GREATER.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...EXPECT WIND GUSTS IN EXCESS OF 34 KNOTS...SUDDENLY HIGHER  
WAVES...FREQUENT LIGHTNING...AND HEAVY DOWNPOURS. MAKE  
SURE ALL ON BOARD ARE WEARING LIFE JACKETS.  
 
* LOCATIONS IMPACTED INCLUDE...  
DAUPHIN ISLAND BRIDGE...WESTERN DAUPHIN ISLAND...PETIT BOIS PASS...  
MISSISSIPPI SOUND EAST OF PASCAGOULA...HERON BAY...PORTERSVILLE BAY  
AND CENTRAL DAUPHIN ISLAND.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF CAUGHT ON THE  
OPEN WATER STAY BELOW DECK IF POSSIBLE...KEEP AWAY FROM UNGROUNDED  
METAL OBJECTS.  
 

 
 
LAT...LON 3038 8840 3041 8840 3042 8831 3037 8816  
3035 8812 3031 8814 3030 8813 3012 8811  
3012 8836 3034 8840 3035 8839 3038 8841  
3039 8841  
TIME...MOT...LOC 1742Z 003DEG 19KT 3036 8826  
 
HAIL...0.00IN  
WIND...>34KTS  
 

 
 
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