Storm Approaching Waters East of US, Canada

A very rapidly developing storm is expected off the East Coast of U.S. and Canada as air pressure is forecast to drop abt 30 hPa in 12 hrs; from abt 998 hPa 26/00UTC to abt 968 hPa at 26/12UTC, after that the low deepens further on NE-ly track.
 

Widespread Storm and high sea (9-14 max 20m) in connection with the low 26-27 as it moves NE-wards along U.S./Canada East Coast.
 

Also vessels moving short coastal distances along U.S. and Canada East Coast should keep themselves updated on the development.