000
FZPN03 KNHC 181509
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC SAT FEB 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 18.
24 HOUR FORECAST VALID 1200 UTC SUN FEB 19.
48 HOUR FORECAST VALID 1200 UTC MON FEB 20.

.WARNINGS.

...GALE WARNING...
.GULF OF CALIFORNIA OCCLUDED FRONT FROM 31N114W TO 31N113.5W 
THEN COLD FRONT TO 29N113.5W. N OF 30N E OF FRONT S WINDS 25 TO 
35 KT. SEAS 8 TO 10 FT. ELSEWHERE N OF 27N S WINDS 20 TO 25 KT. 
SEAS TO 8 FT.
.06 HOUR FORECAST COLD FRONT FROM 28N111W TO 25.5N111W. GULF OF 
CALIFORNIA N OF 23.5N S TO SW WINDS 20 TO 30 KT. SEAS TO 8 FT. N 
OF 30N S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST COLD FRONT MOVED E OF AREA. GULF OF CALIFORNIA 
FROM 29N TO 30N SW TO W WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST. 

.COLD FRONT FROM 27N114W TO 23N116W TO 20N120W...THEN 
DISSIPATING COLD FRONT TO 16N130W. NW OF FRONT TO LINE FROM 
30N131W TO 25N128W TO 21N121W W TO NW WINDS 20 TO 30 KT. SEAS 12 
TO 24 FT IN NW SWELL...HIGHEST NEAR 30N124W. N OF 20.5N E OF 
FRONT TO LINE FROM 26N112W TO 22.5N114W TO 20.5N121W SW TO W 
WINDS 20 TO 30 KT. SEAS 9 TO 11 FT. ELSEWHERE N OF LINE FROM 
21N111W TO 15N116W TO 13N130W TO 04N140W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT IN NW SWELL...EXCEPT 12 TO 18 FT W OF LINE FROM 
30N131W TO 25N128W TO 21N121W AND E OF LINE FROM 30N138W TO 
24N137W TO 21N131W.
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 24N107W TO 16N116W. 
N OF LINE FROM 21N109W TO 14N117W TO 12N127W TO 15N139W EXCEPT W 
OF LINE FROM 30N133W TO 27N137W WINDS 20 KT OR LESS. SEAS 8 TO 
17 FT IN NW SWELL...HIGHEST NEAR 30N117W.
.48 HOUR FORECAST FRONT DISSIPATED. WITHIN AREA BOUNDED BY 
30N119W TO 30N116W TO 26N113W TO 21N106W TO 17N104W TO 08N112W 
TO 07N129W TO 16N132W TO 30N119W WINDS 20 KT OR LESS. SEAS 8 TO 
11 FT IN NW SWELL.

.24 HOUR FORECAST COLD FRONT NW OF AREA. N OF LINE FROM 30N135W 
TO 29N140W SW WINDS 20 TO 25 KT. SEAS 10 TO 12 FT. ELSEWHERE W 
OF LINE FROM 30N133W TO 27N137W WINDS 20 KT OR LESS. SEAS 8 TO 
10 FT IN NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N132W TO 26N136W TO 23N140W. 
N OF 27N W OF FRONT W TO NW WINDS 25 TO 30 KT. SEAS 14 TO 20 FT 
IN NW SWELL...HIGHEST NW PART. N OF 28N AND E OF FRONT TO 128W 
SW WINDS 20 TO 25 KT. SEAS 11 TO 15 FT IN NW SWELL. ELSEWHERE N 
OF LINE FROM 30N122W TO 26N128W TO 23N140W WINDS 20 KT OR LESS. 
SEAS 8 TO 17 FT IN NW SWELL...HIGHEST NW PART.

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

CONVECTION VALID AT 1500 UTC SAT FEB 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
ITCZ FROM 05N91W TO 06N96W TO 05N100W TO 06N103W TO 05N105W TO 
06N107W. SECOND ITCZ FROM 01S104W TO 02N108W TO 03S118W TO 
BEYOND 02S120W. NO SIGNIFICANT CONVECTION. 

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.