000
FZPN03 KNHC 211509
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC TUE FEB 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 TUE FEB 21.
24 HOUR FORECAST VALID 1200 UTC WED FEB 22.
48 HOUR FORECAST VALID 1200 UTC THU FEB 23.

.WARNINGS.

...GALE WARNING...
.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF 
TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.06 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W 
TO 15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 30 TO 35 
KT. SEAS LESS THAN 8 FT. ELSEWHERE WITHIN 45 NM EITHER SIDE OF 
LINE FROM 16N95W TO 15N45W TO 14.5N95.5W WINDS 20 TO 30 KT. SEAS 
LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 45 NM EITHER SIDE OF LINE FROM 16N95W 
TO 14.5N95W TO 13N96W N TO NE WINDS 20 TO 30 KT. SEAS 9 TO 12 
FT. ELSEWHERE WITHIN AREA BOUNDED BY 16N95W TO 14N93.5W TO 
11N96W TO 13N99W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
NE AND NW SWELL.
.36 HOUR FORECAST FROM 10N TO 14N BETWEEN 94W AND 99W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST. 

.COLD FRONT FROM 30N125W TO 26N130W THEN STATIONARY TO 21N140W. 
W OF FRONT WINDS 20 KT OR LESS. SEAS 10 TO 14 FT. ELSEWHERE N OF 
LINE FROM 28N115W TO 24N119W TO 21N131W TO 14N140W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.12 HOUR FORECAST WEAKENING COLD FRONT FROM 30N122W TO 26N130W 
THE WEAKENING STATIONARY TO 21N140W. N OF LINE FROM 25N115W TO 
08N119W TO 06N140W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW 
SWELL. 
.24 HOUR FORECAST FRONTS DISSIPATED. FROM 21N TO 23N W OF 137W 
NE WINDS 20 TO 25 KT. SEAS 9 TO 10 FT. ELSEWHERE AREA BOUNDED BY 
LINE FROM 30N116W TO 25N114W TO 08N126W TO 06N140W TO 26N140W TO 
28N135W TO 30N135W TO 30N116W WINDS 20 KT OR LESS. SEAS 8 TO 11 
FT IN MIXED NW AND NE SWELL.
.48 HOUR FORECAST N OF 25W E OF 121W NW WINDS 20 TO 25 KT. SEAS 
8 TO 11 FT. ELSEWHERE AREA BOUNDED BY LINE FROM 30N115W TO 
23N110W TO 06N126W TO 08N140W TO 24N140W TO 24N128W TO 30N125W 
TO 30N116W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED NW AND 
NE SWELL.

.WITHIN 30 NM EITHER SIDE OF LINE FROM 27N111W TO 
22N108W...INCLUDING THE GULF OF CALIFORNIA...NW TO N WINDS 20 TO 
25 KT. SEAS TO 8 FT S PART. WITHIN AREA BOUNDED BY 20N133W TO 
17N116W TO 23N110W TO 15N100W TO 05N108W TO 07N136W TO 20N133W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NW AND NE SWELL.
.12 HOUR FORECAST CONDITIONS MERGED WITH PARAGRAPH ABOVE.

.48 HOUR FORECAST GULF OF CALIFORNIA N OF 30N NW TO N WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 1500 UTC TUE FEB 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

THERE IS NO ITCZ OVER THE FORECAST WATERS NORTH OF THE EQUATOR. 
NO SIGNIFICANT CONVECTION. 

$$

.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.