129  
WHUS51 KLWX 172234  
SMWLWX  
ANZ535-180000-  
/O.NEW.KLWX.MA.W.0213.250817T2234Z-250818T0000Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
634 PM EDT SUN AUG 17 2025  
 
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD...  
 
* UNTIL 800 PM EDT.  
 
* AT 634 PM EDT, STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE  
EXTENDING FROM 23 NM NORTHWEST OF TIDAL BASIN TO 19 NM NORTHWEST OF  
KEY BRIDGE TO 24 NM NORTHWEST OF ALEXANDRIA, MOVING SOUTHEAST AT 20  
KNOTS.  
 
HAZARD...WIND GUSTS 34 KNOTS OR GREATER.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...BOATERS IN SMALL CRAFT COULD BE THROWN OVERBOARD BY  
SUDDENLY HIGHER WINDS AND WAVES CAPSIZING THEIR VESSEL.  
 
* LOCATIONS IMPACTED INCLUDE...  
FORT WASHINGTON, TIDAL BASIN, REAGAN NATIONAL AIRPORT, WOODROW  
WILSON BRIDGE, KEY BRIDGE, FORT HUNT, NATIONAL HARBOR, AND  
ALEXANDRIA.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MOVE TO SAFE HARBOR IMMEDIATELY AS GUSTY WINDS AND HIGH WAVES ARE  
EXPECTED.  
 

 
 
LAT...LON 3873 7706 3890 7708 3891 7705 3885 7700  
3873 7700 3870 7705 3872 7710  
TIME...MOT...LOC 2234Z 299DEG 19KT 3923 7726 3914 7736 3898 7756  
 
HAIL...0.00IN  
WIND...>34KTS  
 

 
 
GEIGER  
 
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