306 
FZPN03 KNHC 172121
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC MON SEP 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON SEP 17.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 18.
48 HOUR FORECAST VALID 1800 UTC WED SEP 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES 1007 MB NEAR 18N114W. NE SEMICIRCLE WITHIN 150 NM 
WINDS LESS THEN 20 KT SEAS TO 8 FT PRIMARILY IN S SWELL. FROM 
10N TO 14N BETWEEN 111W AND 115W WINDS 20 KT OR LESS. SEAS 8 FT 
IN S SWELL.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LOW PRES 1006 MB...POSSIBLE TROPICAL 
CYCLONE...NEAR 23N114W. E SEMICIRCLE WITHIN 150 NM S WINDS 20 TO 
25 KT. SEAS TO 9 FT.

.REMNANT TROUGH OF PAUL W OF AREA FROM 19N144W TO 22N145W TO 
26N145W. W OF LINE FROM 26N140W TO 20N135W TO 16N135W E WINDS 20 
TO 25 KT. SEAS TO 9 FT.  
.24 HOUR FORECAST W OF LINE FROM 22N140W TO 21N135W TO 17N134W 
TO 15N137W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST W OF LINE FROM 22N140W TO 19N132W TO 16N132W 
TO 13N137W NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.06 HOUR FORECAST LOW PRES 1006 MB NEAR 16N120W. NW QUADRANT 
WITHIN 330 NM N TO NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LOW PRES 1006 MB NEAR 15N123W. NW SEMICIRCLE 
WITHIN 270 NM NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST LOW PRES 1006 MB NEAR 14N128W. NW SEMICIRCLE 
WITHIN 270 NM NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.12 HOUR FORECAST S OF 02S AND W OF 115W WINDS 20 KT OR LESS. 
SEAS 8 FT IN SW SWELL.
.24 HOUR FORECAST S OF LINE FROM 03.4S112W TO 00N120W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN SW SWELL.
.48 HOUR FORECAST S OF LINE FROM 03.4S TO 01S108W TO 03.4S117W 
AND FROM 02N TO 06N BETWEEN 106W AND 111W WINDS 20 KT OR LESS. 
SEAS 8 FT IN SW SWELL.

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

.42 HOUR FORECAST N OF 28N BETWEEN 118W AND 123W WINDS 20 KT OR 
LESS. SEAS 8 FT IN N TO NW SWELL.
.48 HOUR FORECAST N OF 29N BETWEEN 120W AND 124W WINDS 20 KT OR 
LESS. SEAS 8 FT IN N TO NW SWELL.

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

CONVECTION VALID AT 2045 UTC MON SEP 17...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N74W TO 09N94W TO 18N109W TO LOW PRES 1007 
MB NEAR 18N114W TO LOW PRES 1007 MB NEAR 15N120W TO LOW PRES 
1009 MB NEAR 09N140W. NUMEROUS MODERATE SCATTERED STRONG WITHIN 
90 NM OF 15N121.5W. SCATTERED MODERATE ISOLATED STRONG ELSEWHERE 
WITHIN 240 NM EITHER SIDE OF A LINE FROM 19N105W TO 14N124W. 
SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 11N BETWEEN 83W 
AND 92W...FROM 07N TO 11N BETWEEN 99W AND 106W AND WITHIN 120 NM 
OF THE MONSOON TROUGH AXIS W OF 135W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.