000 FZNT32 KNHC 202018 OFFN21 MARINE WEATHER HF VOICE BROADCAST NWS NATIONAL HURRICANE CENTER MIAMI FL 418 PM EDT SAT JUL 20 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...THE NORTHERN PORTION OF A TROPICAL WAVE IN THE W BAY OF CAMPECHE WILL MOVE COMPLETELY OVER MEXICO LATE TONIGHT. CONVECTION WILL CONTINUE ACROSS THE NW AND N CENTRAL GULF TONIGHT IN ASSOCIATION WITH AN UPPER LEVEL LOW. OTHERWISE...A SURFACE RIDGE WILL EXTEND FROM E TO W ALONG 27N SUN THROUGH MON...THEN FROM SW FLORIDA TO NE TEXAS TUE THROUGH THU. GULF OF MEXICO N OF 26N W OF 87W .TONIGHT...S WINDS 10 KT. SEAS 2 TO 3 FT. .SUN...S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. .SUN NIGHT THROUGH MON NIGHT...S WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. .TUE THROUGH THU...SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. GULF OF MEXICO FROM 22N TO 26N W OF 87W .TONIGHT...SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. .SUN...SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .SUN NIGHT THROUGH MON NIGHT...SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .TUE THROUGH THU...SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. SW GULF OF MEXICO S OF 22N W OF 87W .TONIGHT...E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. .SUN...SE WINDS 10 TO 20 KT. SEAS 2 FT WITHIN 60 NM OF COAST OF VERACRUZ...AND 3 TO 5 FT ELSEWHERE. .SUN NIGHT THROUGH MON NIGHT...E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .TUE THROUGH THU...E WINDS 10 TO 20 KT. SEAS 2 TO 4 FT. GULF OF MEXICO E OF 87W .TONIGHT...SE WINDS 10 KT. SEAS 2 TO 3 FT. .SUN...S WINDS 10 KT. SEAS 2 TO 3 FT. .SUN NIGHT THROUGH MON NIGHT...SE WINDS LESS THAN 10 KT. SEAS 2 TO 3 FT. .TUE THROUGH THU...S WINDS LESS THAN 10 KT. SEAS 2 TO 3 FT.