511 
FZPN03 KNHC 180923
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1030 UTC TUE SEP 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC TUE SEP 18.
24 HOUR FORECAST VALID 0600 UTC WED SEP 19.
48 HOUR FORECAST VALID 0600 UTC THU SEP 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRESS NEAR 18N114W 1007 MB. WITHIN 270 NM E SEMICIRCLE 
WINDS 20 KT OR LESS. SEAS TO 10 FT IN SW SWELL.
.24 HOUR FORECAST LOW PRES 1004 MB...POSSIBLE TROPICAL 
CYCLONE...NEAR 21N113W. WITHIN 210 NM E SEMICIRCLE S TO SE WINDS 
20 TO 25 KT. SEAS TO 8 FT. ELSEWHERE N OF 29.5N IN THE GULF OF 
CALIFORNIA SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LOW PRES 1002 MB...POSSIBLE TROPICAL 
CYCLONE...NEAR 25N113W. WITHIN 240 NM E SEMICIRCLE...INCLUDING 
THE GULF OF CALIFORNIA...S WINDS 20 TO 30 KT. SEAS 8 TO 10 FT. 
ELSEWHERE N OF 29.5N IN THE GULF OF CALIFORNIA SE TO S WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.

.LOW PRES 1008 MB NEAR 15N120W. WITHIN 300 NM NW QUADRANT NE 
WINDS 20 TO 25 KT. SEAS TO 8 FT. ELSEWHERE FROM 14N TO 17N 
BETWEEN 111W AND 117W WINDS 20 KT OR LESS. SEAS TO 9 FT.
.24 HOUR FORECAST LOW PRES 1005 MB NEAR 14N126W. WITHIN 300 NM 
NW QUADRANT NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.30 HOUR FORECAST LOW PRES NEAR 15N125W 1004 MB. WITHIN 300 NM 
NW SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST LOW PRES 1005 MB NEAR 13N129W. WITHIN 270 NM 
NW SEMICIRCLE WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL.

.FROM 16N TO 20N W OF 129W WINDS 20 KT OR LESS. SEAS TO 9 FT IN 
NE SWELL.
.06 HOUR FORECAST FROM 15N TO 23N W OF 134W NE TO E WINDS 20 TO 
25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST FROM 14N TO 21N W OF 134W NE TO E WINDS 20 TO 
25 KT. SEAS 8 TO 9 FT.  
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL. 
.48 HOUR FORECAST FROM 13N TO 22N W OF 130W WINDS 20 KT OR LESS. 
SEAS TO 9 FT IN NE SWELL. 

.24 HOUR FORECAST N OF 28N BETWEEN 118W AND 122W WINDS 20 KT OR 
LESS. SEAS TO 8 FT IN N TO NW SWELL.
.48 HOUR FORECAST N OF 27N BETWEEN 119W AND 130W WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN N TO NW SWELL.

.12 HOUR FORECAST S OF 02S AND W OF 118W WINDS 20 KT OR LESS. 
SEAS TO 8 FT IN SW SWELL.
.24 HOUR FORECAST S OF 01S BETWEEN 107W AND 120W WINDS 20 KT OR 
LESS. SEAS TO 8 FT IN SW SWELL.
.36 HOUR FORECAST LOW PRES NEAR 06N109W 1012. WITHIN 300 NM S 
SEMICIRCLE WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW SWELL. 
ELSEWHERE S OF 01S BETWEEN 105W AND 112W WINDS 20 KT OR LESS. 
SEAS TO 8 FT IN SW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 07N110W 1012. WITHIN 270 NM SE 
QUADRANT WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW SWELL.  

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 0900 UTC TUE SEP 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N75W TO 10N86W TO 10N95W TO 
08N105W...RESUMING FROM 20N105W TO A 1007 MB LOW NEAR 18N114W TO 
A 1008 MB LOW NEAR 15N120W TO 12N127W. THE ITCZ BEGINS NEAR 
12N128W AND CONTINUES BEYOND 10N140W. SCATTERED MODERATE 
ISOLATED STRONG N OF 06N E OF 98W AND FROM 12N TO 20N BETWEEN 
106W AND 118W...AND FROM 13N TO 18N BETWEEN 119W AND 125W. 
SCATTERED MODERATE FROM 07N TO 17N W OF 134W.

$$
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.