000
FZPN03 KNHC 281601
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU DEC 28 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU DEC 28.
24 HOUR FORECAST VALID 1200 UTC FRI DEC 29.
48 HOUR FORECAST VALID 1200 UTC SAT DEC 30.

.WARNINGS.

...GALE WARNING...
.WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W TO
14N95W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35
KT. SEAS 11 TO 13 FT. ELSEWHERE WITHIN 60 NM EITHER SIDE OF LINE
FROM 16N95W TO 15N95W TO 12N97W N TO NE WINDS 20 TO 30 KT. SEAS 8
TO 11 FT. 
.24 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W TO
14N95W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35
KT. SEAS 11 TO 13 FT. ELSEWHERE WITHIN 60 NM EITHER SIDE OF LINE
FROM 16N95W TO 15N95W TO 12.5N97W N TO NE WINDS 20 TO 30 KT. 
SEAS 8 TO 11 FT. REMAINDER OF AREA FROM 07N TO 13N BETWEEN 95W
AND 105W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED NW AND NE
SWELL.
.48 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W 
TO 15N95W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 
35 KT. SEAS 10 TO 12 FT. ELSEWHERE WITHIN 60 NM EITHER SIDE OF 
LINE FROM 16N95W TO 15N95W TO 12N97W NE WINDS 20 TO 30 KT. SEAS 
8 TO 10 FT.

.SYNOPSIS AND FORECAST.

.WITHIN 60 NM EITHER SIDE OF LINE FROM 11N86W TO
09N88W...INCLUDING GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT.
SEAS TO 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.TROUGH FROM LOW PRES NEAR 10N125W 1012 MB TO 16.5N122W. WITHIN 
AREA BOUNDED BY 23N128W TO 24N132W TO 22N140W TO 15N140W TO 
18N132W TO 18N125W TO 23N128W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN NW SWELL. 
.24 HOUR FORECAST TROUGH FROM LOW PRES NEAR 10N127W TO 18N125W. WITHIN
AREA BOUNDED BY 20N121W TO 18N129W TO 15N128W TO 16N123W TO 
11N118W TO 12N116W TO 20N121W WINDS 20 KT OR LESS. SEAS 8 FT IN
NW SWELL. 
.48 HOUR FORECAST TROUGH FROM 10N129W TO 18N127W. WITHIN AREA 
BOUNDED BY 14N118W TO 15N118W TO 14N119W TO 12N120W TO 12N119W TO
13N118W TO 14N118W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.

.48 HOUR FORECAST COLD FRONT W OF AREA. FROM 29N TO 30N BETWEEN
135W AND 140W S WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

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

CONVECTION VALID AT 1500 UTC THU DEC 28...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH AXIS EXTENDS FROM 05N77W TO 07N90W TO 06N108W...WHERE
IT TRANSITIONS TO THE INTERTROPICAL CONVERGENCE ZONE AND CONTINUES
W TO A 1012 MB LOW PRESSURE AREA CENTERED NEAR 10N125W, THEN 
FARTHER W TO BEYOND 07N140W. SCATTERED CONVECTION FROM 10N TO 
15N BETWEEN 110W AND 120W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.