000 FZNT32 KNHC 190208 OFFN21 MARINE WEATHER HF VOICE BROADCAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1008 PM EDT THU JUL 18 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...A LOW LEVEL TROUGH WILL SHIFT W ACROSS THE BAY OF CAMPECHE TONIGHT AND FRI. A DEEP LAYERED TROUGH EXTENDING FROM THE FLORIDA BIG BEND TO THE S CENTRAL WATERS WILL SLOWLY MOVE NW AND DISSIPATE OVER THE N CENTRAL WATERS ON SAT. A RIDGE WILL EXTEND FROM N FLORIDA TO NE MEXICO FROM SAT NIGHT THROUGH MON...THEN WILL EXTEND E TO W ALONG 28N ON MON NIGHT AND TUE. GULF OF MEXICO N OF 26N W OF 87W .OVERNIGHT...E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. .FRI...E WINDS LESS THAN 10 KT. SEAS 2 TO 4 FT. .FRI NIGHT THROUGH SAT NIGHT...S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. .SUN THROUGH TUE...SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. GULF OF MEXICO FROM 22N TO 26N W OF 87W .OVERNIGHT...E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT. .FRI...SE WINDS LESS THAN 10 KT. SEAS 2 TO 4 FT. .FRI NIGHT THROUGH SAT NIGHT...SE WINDS 10 TO 20 KT. SEAS 2 TO 4 FT. .SUN THROUGH TUE...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. SW GULF OF MEXICO S OF 22N W OF 87W .OVERNIGHT...NE WINDS LESS THAN 10 KT. SEAS 2 TO 3 FT. .FRI...SE WINDS LESS THAN 10 KT. SEAS 2 TO 3 FT. .FRI NIGHT THROUGH SAT NIGHT...E WINDS 10 TO 20 KT. SEAS 2 TO 4 FT. .SUN THROUGH TUE...E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. GULF OF MEXICO E OF 87W .OVERNIGHT...SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. .FRI...SE 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...E WINDS LESS THAN 10 KT. SEAS 2 TO 3 FT.