Here's a marine statement you don't see all that often--although it is a fairly frequent occurance in the winter.
MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1157 AM EDT MON APR 16 2007
ANZ530>537-170000-
/X.CON.KLWX.MA.S.0007.000000T0000Z-070417T0600Z/
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-
1157 AM EDT MON APR 16 2007
...BLOWOUT TIDES EXPECTED THIS AFTERNOON...
SUSTAINED WEST TO NORTHWEST WINDS OF 25 TO 35 KNOTS WITH GUSTS TO
50 TO 55 KNOTS WILL CAUSE WATER LEVELS ON THE POTOMAC RIVER AND
THE WESTERN SIDE OF THE CHESAPEAKE BAY TO DROP 1 TO 2 FEET BELOW
NORMAL THIS AFTERNOON AND TONIGHT. MARINERS SHOULD CONSIDER MOVING
THEIR BOATS TO DEEPER WATER TO KEEP THEM FROM BEING GROUNDED.
MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1157 AM EDT MON APR 16 2007
ANZ530>537-170000-
/X.CON.KLWX.MA.S.0007.000000T0000Z-070417T0600Z/
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-
1157 AM EDT MON APR 16 2007
...BLOWOUT TIDES EXPECTED THIS AFTERNOON...
SUSTAINED WEST TO NORTHWEST WINDS OF 25 TO 35 KNOTS WITH GUSTS TO
50 TO 55 KNOTS WILL CAUSE WATER LEVELS ON THE POTOMAC RIVER AND
THE WESTERN SIDE OF THE CHESAPEAKE BAY TO DROP 1 TO 2 FEET BELOW
NORMAL THIS AFTERNOON AND TONIGHT. MARINERS SHOULD CONSIDER MOVING
THEIR BOATS TO DEEPER WATER TO KEEP THEM FROM BEING GROUNDED.