883 FZPN03 KNHC 212204 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC FRI SEP 21 2018 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE EQUATOR E OF 120W SYNOPSIS VALID 1800 UTC FRI SEP 21. 24 HOUR FORECAST VALID 1800 UTC SAT SEP 22. 48 HOUR FORECAST VALID 1800 UTC SUN SEP 23. .WARNINGS. .NONE. .SYNOPSIS AND FORECAST. .FROM 12N TO 18N W OF 135W WINDS 20 KT OR LESS. SEAS 8 FT PRIMARILY IN NE SWELL. .06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .30 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W...INCLUDING GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 2100 UTC FRI SEP 21... .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A SEGMENT OF THE MONSOON TROUGH EXTENDS FROM 10N85W TO 12N110W TO 11N120W. ANOTHER SEGMENT REACHES FROM A 1010 MB LOW NEAR 15N126W TO 11N140W. SCATTERED MODERATE CONVECTION FROM 12N TO 15N BETWEEN 95W AND 100W. SCATTERED MODERATE CONVECTION WITHIN 120 NM S OF MONSOON TROUGH AXIS BETWEEN 130W AND 138W. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.