Expires:202405221415;;631667 FZCA52 TJSJ 220112 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 912 PM AST Tue May 21 2024 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-221415- 912 PM AST Tue May 21 2024 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... The interaction of an induced surface trough to the west and a weakening surface high pressure to the east will promote moderate east-southeast winds through Wednesday. As the surface trough moves closer to the region expect increasing shower and thunderstorm activity across the local waters from Wednesday onwards. In addition, the proximity an amplifying mid to upper level trough just west of the region will enhance thunderstorm development as well as increase winds and the potential for squally conditions across the Mona Passage and Atlantic waters by late Wednesday night and through at least Friday. Winds are forecast to diminish once again by the weekend. $$