000
FZPN03 KNHC 310908
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SUN DEC 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SUN DEC 31.
24 HOUR FORECAST VALID 0600 UTC MON JAN 01.
48 HOUR FORECAST VALID 0600 UTC TUE JAN 02.

.WARNINGS.

...GALE WARNING...
.COLD FRONT FROM 30N134W TO 21N140W. N OF 28N WITHIN 60 NM E OF 
FRONT S WINDS 20 TO 25 KT. SEAS TO 8 FT. N OF 29N W OF FRONT 
WINDS 20 KT OR LESS. SEAS TO 8 FT PRIMARILY IN NW SWELL.
.24 HOUR FORECAST DISSIPATING STATIONARY FRONT FROM 30N131W TO 
20N140W. SECOND COLD FRONT FROM 30N135W TO 27N135W TO 24N140W. N 
OF 28N W OF 138W NW TO N WINDS 30 TO 35 KT. SEAS 15 TO 18 FT. 
ELSEWHERE W OF FRONT NW TO N WINDS 20 TO 30 KT. SEAS 8 TO 15 FT. 
.36 HOUR FORECAST STATIONARY FRONT DISSIPATED. TROUGH FROM 
30N131W TO 24N131W TO 19N136W. LOW PRES NEAR 28N136W 1009 MB 
WITH COLD FRONT FROM 31N133W TO 26N132W TO 21N140W. N OF 27N 
WITHIN 60 NM E OF TROUGH SE WINDS 20 TO 25 KT. SEAS TO 9 FT. N 
OF 24N W OF 137W NW TO N WINDS 20 TO 30 KT. SEAS 13 TO 17 FT. 
ELSEWHERE W OF COLD FRONT AND N OF 26N BETWEEN COLD FRONT AND 
TROUGH WINDS 20 KT OR LESS. SEAS 8 TO 13 FT PRIMARILY IN NW 
SWELL. 
.48 HOUR FORECAST TROUGH DISSIPATED. LOW PRES NEAR 28N135W 1008 
WITH COLD FRONT FROM 30N131W TO 24N130W TO 20N132W TO 18N140W. N 
OF 25N W OF 137W NW TO N WINDS 20 TO 25 KT. SEAS 11 TO 14 FT 
PRIMARILY IN NW SWELL. ELSEWHERE NW OF LINE FROM 30N125W TO 
19N140W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT PRIMARILY IN NW 
SWELL. 

...GALE WARNING...
.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING GULF OF 
TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING 
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.42 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W 
TO 14N95.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 
TO 35 KT. SEAS 10 TO 13 FT. ELSEWHERE WITHIN 60 NM EITHER SIDE 
OF LINE FROM 16N95W TO 14.5N95W TO 13N96W N TO NE WINDS 20 TO 30 
KT. SEAS 8 TO 11 FT. 
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 
13.5N96W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 
TO 40 KT. SEAS 10 TO 17 FT. ELSEWHERE WITHIN 75 NM OF LINE FROM 
16N95W TO 14N95W TO 12N97W NE TO NE WINDS 20 TO 30 KT. SEAS 8 TO 
10 FT. 

.SYNOPSIS AND FORECAST.

.30 HOUR FORECAST TROUGH FROM 26N127W TO 21N130W. FROM 22N TO 
26N BETWEEN 125W AND 127W SE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST TROUGH DISSIPATED. CONDITIONS MERGED ABOVE.

.FROM 10N TO 12N E OF 88W...INCLUDING THE GULF OF PAPAGAYO... NE 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE. 

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

CONVECTION VALID AT 0900 UTC SUN DEC 31...

.SCATTERED MODERATE ISOLATED STRONG WITHIN AREA BOUNDED BY 
16N140W TO 28N133W TO 26N126W TO 13N135W TO 16N140W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 09N82W TO 06N91W TO 06N97W. ITCZ FROM 06N97W 
TO 08N105W TO 09N127W. IT RESUMES FROM 09N133W TO BEYOND 08N140W.
SCATTERED MODERATE ISOLATED STRONG FROM 05N TO 09N BETWEEN 82W 
AND 86W. SCATTERED MODERATE ISOLATED STRONG WITHIN 120 NM N OF 
THE ITCZ BETWEEN 107W AND 120W.  

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.