High Seas Forecast
Issued by NWS

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000
FZPN03 KNHC 180836
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI OCT 18 2019

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI OCT 18.
24 HOUR FORECAST VALID 0600 UTC SAT OCT 19.
48 HOUR FORECAST VALID 0600 UTC SUN OCT 20.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM OCTAVE NEAR 9.9N 127.1W 1004 MB AT 0900 UTC OCT
18 MOVING W OR 270 DEG AT 1 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER
EXCEPT 20 NM SW QUADRANT.  SEAS 12 FT OR GREATER WITHIN AREA OF
TROPICAL STORM FORCE WINDS WITH SEAS TO 12 FT. ELSEWHERE WITHIN
90 NM SE AND 60 NM NW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO
12 FT. REMAINDER OF AREA FROM 07N TO 11N BETWEEN 122W AND 132W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN S TO SW SWELL.
.24 HOUR FORECAST TROPICAL STORM OCTAVE NEAR 11.0N 127.2W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM E SEMICIRCLE...20 NM SW QUADRANT AND 30 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN AREA OF TROPICAL STORM
FORCE WINDS. ELSEWHERE WITHIN 60 NM OF CENTER WINDS 20 TO 33 KT.
SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 10N TO 13N BETWEEN 123W
AND 130W WINDS 20 KT OR LESS. SEAS 8 FT IN S TO SW SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION OCTAVE NEAR 11.0N 126.9W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.  WITHIN 60 NM NW
SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW OCTAVE NEAR 10.6N
127.4W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW OCTAVE NEAR 10.9N
127.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW OCTAVE NEAR 11.2N
127.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.N OF 29N BETWEEN 118W AND 123W NW TO N WINDS 20 TO 25 KT. SEAS
8 TO 9 FT. ELSEWHERE NW OF LINE 30N116W TO 21N140W WINDS 20 KT
OR LESS. SEAS 8 TO 13 FT IN NW TO N SWELL...HIGHEST NEAR 29N133W.
.24 HOUR FORECAST N OF 29N BETWEEN 120W AND 123W NW TO N WINDS
20 TO 25 KT. SEAS 12 TO 14 FT IN NW TO N SWELL. ELSEWHERE N OF
LINE 24N114W TO 11N140W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT IN
NW TO N SWELL...HIGHEST N OF 26N BETWEEN 119W AND 125W.
.48 HOUR FORECAST N OF 27N BETWEEN 119W AND 124W NW TO N WINDS
20 TO 25 KT. SEAS 10 TO 14 FT IN NW TO N SWELL. ELSEWHERE WITHIN
30N116W TO 22N110W TO 10N110W TO 10N140W TO 30N140W TO 30N116W
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW TO N SWELL.

.FROM 15N TO 18N W OF 138W WINDS 20 KT OR LESS. SEAS 8 FT IN
MIXED NE AND NW SWELL.
.24 HOUR FORECAST CONDITIONS MERGED.

.FROM 08N TO 12N BETWEEN 107W AND 115W SW WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT IN SW SWELL.
.24 HOUR FORECAST FROM 10N TO 15N BETWEEN 100W AND 106W SW TO W
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. FROM 10N TO 15N BETWEEN 106W
AND 112W WINDS 20 KT OR LESS. SEAS TO 9 FT IN S TO SW SWELL.
.48 HOUR FORECAST FROM 09N TO 16N BETWEEN 94W AND 109W WINDS 20
KT OR LESS. SEAS 8 TO 9 FT IN S TO SW SWELL.

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

CONVECTION VALID AT 0830 UTC FRI OCT 18...

.TROPICAL STORM OCTAVE...NUMEROUS MODERATE SCATTERED STRONG
FROM 09N TO 12N BETWEEN 122W AND 130W.

.TROPICAL WAVE AXIS NEAR 83W N OF 02N. SCATTERED MODERATE
FROM 03N TO 08N BETWEEN 80W AND 83W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N85W TO 15N96W TO 15N113W TO 11N122W. IT
RESUMES WEST OF OCTAVE NEAR 10N130W TO 10N 140W. SCATTERED
MODERATE ISOLATED STRONG FROM 10N TO 17N BETWEEN 95W AND 110W.
SCATTERED MODERATE FROM 10N TO 15N BETWEEN 114W AND 118W.
SCATTERED MODERATE ISOLATED STRONG FROM 06N TO 10N BETWEEN 130W
AND 140W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.


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