000
FZPN03 KNHC 100330
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC WED OCT 10 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC WED OCT 10.
24 HOUR FORECAST VALID 0000 UTC THU OCT 11.
48 HOUR FORECAST VALID 0000 UTC FRI OCT 12.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM SERGIO NEAR 17.5N 125.6W 991 MB AT 0300 UTC OCT
10 MOVING ENE OR 060 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM OF CENTER
EXCEPT 120 NM SE QUADRANT.  SEAS 12 FT OR GREATER WITHIN 270 NM
E SEMICIRCLE AND 300 NM W SEMICIRCLE WITH SEAS TO 29 FT.
ELSEWHERE WITHIN 420 NM OF CENTER WINDS 20 TO 33 KT. SEAS 10 TO
12 FT IN MIXED SWELL. REMAINDER OF AREA W OF 112W WINDS 20 KT OR
LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM SERGIO NEAR 19.6N 121.9W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE 
WINDS WITHIN 100 NM N SEMICIRCLE...130 NM SE QUADRANT AND 120 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM N AND 360 NM S
SEMICIRCLES WITH SEAS TO 25 FT. ELSEWHERE WITHIN 390 NM OF CENTER
WINDS 20 TO 33 KT. SEAS 10 TO 12 FT IN MIXED SWELL. REMAINDER OF
AREA W OF 110W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED
SWELL.
.48 HOUR FORECAST TROPICAL STORM SERGIO NEAR 24.1N 116.5W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 130 NM NE QUADRANT...150 NM SE QUADRANT...110 NM SW 
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 390 NM SE AND 270 NM NW SEMICIRCLES WITH SEAS TO 20 FT.
ELSEWHERE WITHIN 420 NM WINDS 20 TO 33 KT. SEAS 10 TO 12 FT IN
MIXED SWELL. REMAINDER OF AREA BETWEEN 110W AND 120W WINDS 20 KT
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM SERGIO INLAND NEAR 28.7N 
110.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW SERGIO NEAR 33.0N 
101.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST...DISSIPATED.

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.

.FROM 10N TO 12N BETWEEN 95W AND 100W SW WINDS 20 TO 25 KT. SEAS
9 TO 10 FT. ELSEWHERE WITHIN 120 NM EITHER SIDE OF LINE FROM 06N105W
TO 13N93W WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW SWELL.
.24 HOUR FORECAST WITHIN 180 NM EITHER SIDE OF LINE FROM 03N110W
TO 13N95W WINDS 20 KT OR LESS. SEAS 8 FT PRIMARILY IN SW SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 22N110W TO 11N97W TO
01N110W TO 22N97W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED SW
AND W SWELL.

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

CONVECTION VALID AT 0300 UTC WED OCT 10...

T.S. SERGIO...NUMEROUS MODERATE TO ISOLATED STRONG WITHIN 180 NM
N SEMICIRCLE AND 150 NM S SEMICIRCLE OF CENTER.  

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 16N97W TO 11N105W TO
10N115W...AND FROM 12N130W TO 10N135W TO BEYOND 10N140W. 
SCATTERED MODERATE WITHIN FROM 11N TO 15N BETWEEN 90W AND 100W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.