902 
FZPN03 KNHC 182113
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC TUE SEP 18.
24 HOUR FORECAST VALID 1800 UTC WED SEP 19.
48 HOUR FORECAST VALID 1800 UTC THU SEP 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES 1007 MB NEAR 15N122W. WITHIN 420 NM NW QUADRANT NE 
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LOW PRES 1006 MB NEAR 14N127W. WINDS 20 KT OR 
LESS. SEAS LESS THAN 8 FT.

.W OF LINE FROM 21N140W TO 19N133W TO 13N133W NE TO E WINDS 20 
TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST W OF LINE FROM 21N140W TO 19N131W TO 15N131W 
TO 13N137W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL. 
.48 HOUR FORECAST FROM 15N TO 18N W OF 135W WINDS 20 KT OR LESS. 
SEAS 8 FT IN MIXED SWELL.

.S OF LINE FROM 03.4S114W AND 00N120W WINDS 20 KT OR LESS. SEAS 
8 FT IN SW SWELL.
.24 HOUR FORECAST LOW PRES 1008 MB NEAR 06N109W. WITHIN 150 NM 
NE 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 08N112W 1009 MB. WITHIN 150 NM 
NE SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL.

.WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W TO 
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.12 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 28N BETWEEN 119W AND 126W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN N TO NW SWELL.
.48 HOUR FORECAST N OF 26N BETWEEN 120W AND 130W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN N TO NW SWELL.

.12 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.
.18 HOUR FORECAST GULF OF CALIFORNIA N OF 29.5N SE TO S WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.30 HOUR FORECAST LOW PRES 1005 MB...POSSIBLE TROPICAL 
CYCLONE...NEAR 24N113W. WITHIN 210 NM SE QUADRANT S TO SW WINDS 
20 TO 25 KT. SEAS TO 8 FT.
.42 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.
.48 HOUR FORECAST LOW PRES 1004 MB...POSSIBLE TROPICAL 
CYCLONE...NEAR 28N112W. GULF OF CALIFORNIA BETWEEN 26N AND 28.5N 
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 2045 UTC TUE SEP 18...

.TROUGH FROM 23N110W TO LOW PRES 1007 MB NEAR 20N112W TO LOW 
PRES 1007 MB NEAR 15N122W TO 14N125W...SCATTERED MODERATE 
ISOLATED STRONG WITHIN 90 NM EITHER SIDE OF LINE FROM 25N108W TO 
20N112W TO 14N126W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES 1006 MB NEAR 08N74W TO 11N90W TO 
09N104W TO 11N111W...THEN RESUMES FROM 13N125W TO 11N132W TO 
11N136W. ITCZ CONTINUES FROM 11N136W TO BEYOND 11N140W. 
SCATTERED MODERATE ISOLATED STRONG FROM 02N TO 07N E OF 
80W...FROM 10N TO 13N BETWEEN 89W AND 92W...FROM 13N TO 15N 
BETWEEN 95W AND 101W AND FROM 06N TO 12N BETWEEN 106W AND 110W. 
SCATTERED MODERATE FROM 10N TO 12N W OF 130W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.