000
FZPN03 KNHC 110949
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU OCT 11 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC THU OCT 11.
24 HOUR FORECAST VALID 0600 UTC FRI OCT 12.
48 HOUR FORECAST VALID 0600 UTC SAT OCT 13.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM SERGIO NEAR 21.0N 120.2W 992 MB AT 0900 UTC OCT
11 MOVING NE OR 050 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM OF CENTER
EXCEPT 120 NM SE QUADRANT.  SEAS 12 FT OR GREATER WITHIN 180 NM
N SEMICIRCLE AND 270 NM S SEMICIRCLE WITH SEAS TO 23 FT.
ELSEWHERE WITHIN 300 NM OF CENTER WINDS 20 TO 33 KT. SEAS 10 TO
12 FT IN MIXED SWELL. REMAINDER OF AREA FROM 12N TO 28N BETWEEN
110W AND 130W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED
SWELL.
.24 HOUR FORECAST TROPICAL STORM SERGIO NEAR 25.7N 114.8W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 90 NM W SEMICIRCLE...100 NM NE QUADRANT AND 120 NM 
SE QUADRANT. OVER OPEN PACIFIC WATERS OFF BAJA CALIFORNIA FROM
22N TO 28N E OF 119W WINDS 20 TO 33 KT. SEAS 12 TO 17 FT.
ELSEWHERE FROM 20N TO 29N BETWEEN 110W AND 122W WINDS 20 KT OR
LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.36 HOUR FORECAST TROPICAL STORM SERGIO INLAND NEAR 28.4N 111.4W.
OVER GULF OF CALIFORNIA FROM 25N TO 29N WINDS 25 TO 35 KT. SEAS 8
TO 13 FT. OVER OPEN WATERS OFF BAJA CALIFORNIA SUR FROM 24N TO
28N E OF 116W NW WINDS 20 TO 30 KT. SEAS 10 TO 13 FT. ELSEWHERE 
OVER OPEN WATERS N OF 20N E OF 121W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION SERGIO INLAND NEAR 31.0N 
107.2W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER OPEN
WATERS FROM 20N TO 25N BETWEEN 107W AND 114W WINDS 20 KT OR LESS.
SEAS TO 9 FT PRIMARILY IN NW SWELL.
.72 HOUR FORECAST POST-TROPICAL SERGIO NEAR 35.3N 96.0W. MAXIMUM
SUSTAINED WINDS 20 KT GUSTS 30 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 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.

.S OF 12N BETWEEN 95W AND 125W WINDS 20 KT OR LESS. SEAS TO 9 FT
PRIMARILY IN SW SWELL.
.24 HOUR FORECAST S OF 20N BETWEEN 100W AND 122W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN SW SWELL.
.48 HOUR FORECAST WITHIN 90 NM EITHER SIDE OF LINE FROM 04N113W
TO 14N95W WINDS 20 KT OR LESS. SEAS TO 9 FT IN SW SWELL.

.30 HOUR FORECAST N OF 05N BETWEEN 80W AND 85W WINDS 20 KT OR 
LESS. SEAS TO 8 FT IN SW SWELL. 
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 0900 UTC THU OCT 11...

T.S. SERGIO...SCATTERED MODERATE TO ISOLATED STRONG WITHIN 180 
NM N SEMICIRCLE AND SCATTERED MODERATE WITHIN 120 NM S SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 16N98W TO 11.5N110W TO
13N115W...AND FROM 13N127W TO 10N135W TO BEYOND 10N140W. SCATTERED
MODERATE FROM 12N TO 14N BETWEEN 92W AND 100W...AND FROM 08N TO 
10N BETWEEN 135W AND 138W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.