000
FZPN03 KNHC 231538
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SAT DEC 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SAT DEC 23.
24 HOUR FORECAST VALID 1200 UTC SUN DEC 24.
48 HOUR FORECAST VALID 1200 UTC MON DEC 25.

.WARNINGS.

...GALE WARNING...

.LOW PRES W OF AREA NEAR 28N142W 1009 MB. WITHIN 120 NM E 
SEMICIRCLE WINDS 30 TO 35 KT. SEAS 12 TO 15 FT. ELSEWHERE WITHIN 
300 NM E SEMICIRCLE WINDS 20 TO 30 KT. SEAS 9 TO 12 FT. 
REMAINDER OF AREA N OF 20N W OF 134W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN MIXED SE AND NW SWELL.
.12 HOUR FORECAST LOW PRES NEAR 30N138W 1008 MB. WITHIN 240 NM E 
SEMICIRCLE SE TO S WINDS 20 TO 30 KT. SEAS 9 TO 13 FT. ELSEWHERE 
N OF 23N W OF 133W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED 
SE AND NW SWELL.
.24 HOUR FORECAST WEAKENING LOW PRES N OF AREA NEAR 32N136W. 
OVER FORECAST WATERS WITHIN 210 NM E SEMICIRCLE SE TO S WINDS 20 
TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE W OF LINE FROM 30N132W TO 
22N140W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT IN NW SWELL. 
.48 HOUR FORECAST LOW DISSIPATED. W OF LINE FROM 30N128W TO 
12N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL. 

.09 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 
14.5N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 
20 TO 30 KT. SEAS 8 TO 10 FT.
.15 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 
35 KT. SEAS 9 TO 12 FT. ELSEWHERE WITHIN 45 NM OF LINE FROM 
16N95W TO 14N95.5W TO 13N96W N TO NE WINDS 20 TO 30 KT. SEAS 8 
TO 11 FT.
.24 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 14N95W TO 
12.5N96.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 
20 TO 30 KT. SEAS 8 TO 12 FT.
.42 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 14.5N95.5W
...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35 
KT. SEAS 8 TO 12 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM 16N95W 
TO 14.5N95W TO 13N96W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 10 
FT. REMAINDER OF AREA N OF 13N BETWEEN 94W AND 97W WINDS 20 KT 
OR LESS. SEAS TO 9 FT IN MIXED SWELL. 
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W
...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35 
KT. SEAS 8 TO 12 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM 16N95W 
TO 14.5N95W TO 12.5N96.5W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 
11 FT. REMAINDER OF AREA N OF 12N BETWEEN 94W AND 98W WINDS 20 
KT OR LESS. SEAS TO 9 FT IN MIXED SWELL. 

.SYNOPSIS AND FORECAST.

.GULF OF CALIFORNIA FROM 22N TO 28N W OF 108W NW TO N WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT. 
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 10N TO 11.5N E OF 87W...INCLUDING THE GULF OF 
PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST FROM 10N TO 11.5N E OF 88W...INCLUDING THE 
GULF OF PAPAGAYO...NE 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 1430 UTC SAT DEC 23...

.LOW PRES NEAR 28N142W 1009 MB...SCATTERED MODERATE N OF 16N W 
OF 135W. 

.SURFACE TROUGH FROM 16N115W TO 09N116W...SCATTERED MODERATE 
FROM 08N TO 19N BETWEEN 107W AND 114W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

SURFACE TROUGH FROM 06N77W TO 07N100W. ITCZ CONTINUES FROM 
07N100W TO 09N115W TO 07N125W TO 10N140W. NO SIGNIFICANT 
CONVECTION NOTED. 

$$

.FORECASTER LATTO. NATIONAL HURRICANE CENTER.