000
FZPN03 KNHC 171508
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU AUG 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 17.
24 HOUR FORECAST VALID 1200 UTC FRI AUG 18.
48 HOUR FORECAST VALID 1200 UTC SAT AUG 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES 12N111W 1008 MB. WITHIN 90 NM NE SEMICIRCLE OF LOW E 
TO SE WINDS 20 TO 25 KT. SEAS TO 9 FT. 
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
15.5N116.5W 1007 MB. WITHIN 120 NM NE SEMICIRCLE OF LOW NE TO E 
WINDS 20 TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
16.5N122W 1007 MB. WITHIN 150 NM N SEMICIRCLE OF LOW NE TO E 
WINDS 20 TO 25 KT. SEAS TO 10 FT. WITHIN 75 NM S SEMICIRCLE OF 
LOW WINDS 20 KT OR LESS. SEAS TO 9 FT.

.S OF 02S BETWEEN 90W AND 110W WINDS 20 KT OR LESS. SEAS TO 8 FT 
PRIMARILY IN SW SWELL.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.12 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 
14.5N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W...
INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS
TO 8 FT.

.12 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 10.5N88W...
INCLUDING THE GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 1500 UTC THU AUG 17...

.TROPICAL WAVE N OF 06N ALONG 90W...ISOLATED STRONG S OF 12N 
WITHIN 60 NM OF WAVE.

.TROPICAL WAVE FROM 08N104W TO 20N107W...SCATTERED MODERATE 
ISOLATED STRONG N OF 17N WITHIN 150 NM OF WAVE AND S OF 12N 
WITHIN 90 NM W OF WAVE.

.LOW PRES 12N111W...SCATTERED STRONG WITHIN 180 NM W SEMICIRCLE
OF LOW. 

.LOW PRES 16.5N121W 1009 MB...ISOLATED STRONG WITHIN 210 NM N
SEMICIRCLE.  

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N78W TO 09N90W TO 07N95W TO 14N105W 
THROUGH LOW PRES 12N111W TO 15N129W TO 13N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 90 NM OF LINES FROM 09N84W TO 
09N88W AND FROM 06N92W TO 09N98W AND WITHIN 150 NM OF LINE FROM 
13.5N116W TO 12N140W.  

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.