000 FZNT32 KNHC 192103 OFFN21 MARINE WEATHER HF VOICE BROADCAST NWS NATIONAL HURRICANE CENTER MIAMI FL 503 PM EDT THU SEP 19 2013 MARINE WEATHER HF VOICE BROADCAST FOR THE GULF OF MEXICO SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT. SYNOPSIS FOR THE GULF OF MEXICO .SYNOPSIS...LOW PRES NEAR 21N95W IS FORECAST TO MOVE NORTHWESTWARD REACHING THE MEXICAN COAST NEAR 25N98W ON SAT THEN MOVING W OF AREA ON SUN...WITH THE POSSIBILITY OF TROPICAL CYCLONE FORMATION THROUGH SAT. A COLD FRONT WILL ENTER THE N CENTRAL GULF EARLY SAT...STALLING FROM THE FLORIDA PANHANDLE TO THE NE MEXICO ON SUN...THEN DRIFTING NW ON MON AND TUE. GULF OF MEXICO N OF 26N W OF 87W .TONIGHT...SE WINDS 10 TO 15 KT...BECOMING 10 TO 20 KT LATE. SEAS 5 TO 7 FT. .FRI...SE WINDS 10 TO 20 KT...BECOMING 10 TO 15 KT LATE. SEAS 4 TO 6 FT. .FRI NIGHT THROUGH SAT NIGHT...SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .SUN THROUGH TUE...E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. GULF OF MEXICO FROM 22N TO 26N W OF 87W .TONIGHT...E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT. .FRI...SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .FRI NIGHT THROUGH SAT NIGHT...SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .SUN THROUGH TUE...E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. SW GULF OF MEXICO S OF 22N W OF 87W .TONIGHT...S WINDS 15 TO 25 KT...DIMINISHING TO 10 TO 20 KT LATE. SEAS 4 TO 6 FT. .FRI...S WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .FRI NIGHT THROUGH SAT NIGHT...SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. .SUN THROUGH TUE...NE WINDS LESS THAN 10 KT. SEAS 2 TO 3 FT. GULF OF MEXICO E OF 87W .TONIGHT...E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. .FRI...E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. .FRI NIGHT THROUGH SAT NIGHT...SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. .SUN THROUGH TUE...SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.