855 
FZPN03 KNHC 181553
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC TUE SEP 18.
24 HOUR FORECAST VALID 1200 UTC WED SEP 19.
48 HOUR FORECAST VALID 1200 UTC THU SEP 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES 1007 MB NEAR 16N121W. WITHIN 270 NM NW QUADRANT NE 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW PRES 1006 MB NEAR 14.5N126W. WITHIN 270 NM 
NW QUADRANT NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST LOW PRES 1007 MB NEAR 13.5N130W. WITHIN 270 NM 
NW SEMICIRCLE WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.

.W OF LINE FROM 23N140W TO 19N133W TO 14N134W NE TO E WINDS 20 
TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST FROM 14N TO 20N W OF 136W NE WINDS 20 TO 25 
KT. SEAS 8 TO 9 FT. 
.48 HOUR FORECAST FROM 15N TO 19N W OF 134W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED SWELL.

.S OF 01S AND W OF 115W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN 
SW SWELL.
.24 HOUR FORECAST S OF 01S W OF 106W WINDS 20 KT OR LESS. SEAS 8 
FT IN SW SWELL.
.30 HOUR FORECAST LOW PRES 1007 MB NEAR 06N109W. WITHIN 270 NM S 
SEMICIRCLE WINDS 20 KT OR LESS. SEAS TO 9 FT IN SW SWELL. S OF 
01S BETWEEN 105W AND 114W WINDS 20 KT OR LESS. SEAS 8 FT IN SW 
SWELL.
.48 HOUR FORECAST LOW PRES NEAR 07N112W 1008 MB. WITHIN 180 NM E 
SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL.  

.18 HOUR FORECAST N OF 29N BETWEEN 119W AND 122W WINDS 20 KT OR 
LESS. SEAS TO 8 FT IN N TO NW SWELL.
.24 HOUR FORECAST N OF 26N BETWEEN 118W AND 123W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN N TO NW SWELL.
.48 HOUR FORECAST N OF 27N BETWEEN 118W AND 130W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN N TO NW SWELL.

.18 HOUR FORECAST GULF OF CALIFORNIA N OF 29.5N AND E OF 113.5W 
S WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST GULF OF CALIFORNIA N OF 29.5N SE TO S WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.36 HOUR FORECAST LOW PRES 1004 MB...POSSIBLE TROPICAL 
CYCLONE...NEAR 24N113W. WITHIN 210 NM SE QUADRANT S TO SW WINDS 
20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW PRES 1004 MB...POSSIBLE TROPICAL 
CYCLONE...OVER LAND NEAR 26.5N112.5W. GULF OF CALIFORNIA BETWEEN 
25N AND 28N S TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

CONVECTION VALID AT 1515 UTC TUE SEP 18...

.TROUGH FROM LOW PRES 1007 MB NEAR 22N110W TO LOW PRES 1007 MB 
NEAR 16N121W...SCATTERED MODERATE ISOLATED STRONG WITHIN 90 NM 
EITHER SIDE OF LINE FROM 24N106W TO 18N116W TO 14N124W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 12N73W TO 09N79W TO 10N86W TO 11N90W TO 
09N104W TO 10N110W...THEN RESUMES FROM 14N123W TO 11N136W. THE 
ITCZ CONTINUES FROM 11N136W TO BEYOND 11N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 150 NM OF THE COAST BETWEEN 77W 
AND 100W...FROM 07N TO 12N BETWEEN 105W AND 110W AND FROM 10N TO 
12N W OF 130W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.