641 
FZPN03 KNHC 010324
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC MON OCT 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 0000 UTC MON OCT 01.
24 HOUR FORECAST VALID 0000 UTC TUE OCT 02.
48 HOUR FORECAST VALID 0000 UTC WED OCT 03.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM SERGIO NEAR 11.6N 107.3W 998 MB AT 0300 UTC OCT 
01 MOVING W OR 260 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 55 KT 
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM E 
SEMICIRCLE...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM NW AND SE QUADRANTS...180 NM NE QUADRANT AND 60 NM SW 
QUADRANT WITH SEAS TO 22 FT. ELSEWHERE WITHIN 180 NM OF 
CENTER...EXCEPT 210 NM NE QUADRANT WINDS 20 TO 33 KT. SEAS 9 TO 
12 FT IN MIXED SWELL. REMAINDER OF THE AREA FROM 06N TO 17N 
BETWEEN 102W AND 110W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED 
SWELL.
.12 HOUR FORECAST HURRICANE SERGIO NEAR 11.4N 109.0W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. SEAS 12 FT OR GREARTER WITHIN 
120 NM OF CENTER...EXCEPT 180 NM NE QUADRANT. ELSEWHERE WITHIN 
180 NM OF CENTER...EXCEPT 210 NM NE QUADRANT WINDS 20 TO 33 KT. 
SEAS 9 TO 12 FT IN MIXED SWELL. REMAINDER OF THE AREA FROM 06N 
TO 18N BETWEEN 103W AND 112W WINDS 20 KT OR LESS. SEAS TO 9 FT 
IN MIXED SWELL. 
.24 HOUR FORECAST HURRICANE SERGIO NEAR 11.3N 111.3W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM E SEMICIRCLE...50 NM SW QUADRANT AND 60 NM NW 
QUADRANT. SEAS 12 FT OR GREARTER WITHIN 150 NM OF CENTER... 
EXCEPT 210 NM NE QUADRANT. ELSEWHERE WITHIN 180 NM OF 
CENTER...EXCEPT 240 NM NE QUADRANT WINDS 20 TO 33 KT. SEAS 9 TO 
12 FT IN MIXED SWELL. REMAINDER OF THE AREA FROM 04N TO 19N 
BETWEEN 104W AND 116W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED 
SWELL. 
.48 HOUR FORECAST HURRICANE SERGIO NEAR 12.4N 115.2W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS 
WITHIN 130 NM E SEMICIRCLE AND 110 NM W SEMICIRCLE. SEAS 12 FT 
OR GREARTER WITHIN 240 NM OF CENTER...EXCEPT 270 NM SE QUADRANT. 
ELSEWHERE WITHIN 270 NM OF CENTER...EXCEPT 300 NM SE QUADRANT 
WINDS 20 TO 33 KT. SEAS 9 TO 12 FT IN MIXED SWELL. REMAINDER OF 
THE AREA FROM 05N TO 20N BETWEEN 105W AND 121W WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN MIXED SWELL. 
.72 HOUR FORECAST HURRICANE SERGIO NEAR 14.5N 118.0W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SERGIO NEAR 16.5N 120.5W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
.120 HOUR FORECAST HURRICANE SERGIO NEAR 18.0N 122.5W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM ROSA NEAR 26.0N 117.6W 989 MB AT 0300 UTC OCT 01 
MOVING NNE OR 025 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 55 KT 
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM N 
SEMICIRCLE...130 NM SE QUADRANT AND 90 NM SW QUADRANT.SEAS 12 
FT OR GREATER WITHIN 210 NM OF CENTER EXCEPT 150 NM SW QUADRANT 
WITH SEAS TO 26 FT.  ELSEWHERE WITHIN 240 NM OF CENTER WINDS 20 
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA FROM 13N TO 30N 
BETWEEN 110W AND 126W WINDS 20 KT OR LESS. SSEAS 8 TO 10 FT IN 
MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM ROSA NEAR 29.1N 115.6W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM W SEMICIRCLE...60 NM NE QUADRANT AND 70 NM SE 
QUADRANT. OVER FORECAST WATERS SEAS TO 12 FT WITHIN 60 NM OF 
CENTER. ELSEWHERE N OF 27N E OF 117W WINDS 20 TO 33 KT. SEAS 8 
TO 11 FT. OVER THE GULF OF CALIFORNIA N OF 28W S WINDS 20 TO 30 
KT. SEAS 8 TO 10 FT. REMAINDER OF THE AREA N OF 23N E OF 118W 
WINDS 20 KT OR LESS. SEAS TO 9 FT. 
.48 HOUR FORECAST POST-TROPICAL ROSA NEAR 34.2N 112.4W. MAXIMUM 
SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST WATERS WINDS 20 
KT OR LESS. SEAS LESS THAN 8 FT.
.72 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.

.N OF 14N BETWEEN 94W AND 96W...INCLUDING GULF OF TEHUANTEPEC... 
N WINDS 20 TO 30 KT. SEAS TO 8 FT. 
.12 HOUR WITHIN 30 NM OF A LINE FROM 16N95W TO 15N95W TO 
13.5N96.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 
30 KT. SEAS 8 TO 10 FT FT.
.24 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W N WINDS 20 TO 30 
KT. SEAS TO 9 FT. 
.36 HOUR FORECAST N OF 14N BETWEEN 94W AND 96W...INCLUDING GULF 
OF TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W N WINDS 20 TO 30 
KT. SEAS TO 8 FT. 

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

CONVECTION VALID AT 0300 UTC MON OCT 01...

HURRICANE ROSA...NUMEROUS MODERATE TO STRONG WITHIN 120 NM NE 
QUADRANT.

T.S. SERGIO...NUMEROUS MODERATE TO STRONG WITHIN 105 NM NE 
SEMICIRCLE. SCATTERED MODERATE ELSEWHERE FROM 08N TO 13N BETWEEN 
104W AND 112W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM A 1006 MB LOW PRESSURE OVER 
COLOMBIA NEAR 06N76W TO 08N81W TO 09N90W TO 09N100W. ANOTHER 
SEGMENT OF THE MONSOON TROUGH REACHES FROM 14N123W TO 10N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS NOTED FROM 06N 
TO 11N BETWEEN 80W AND 90W. SCATTERED MODERATE IS FROM 10N TO 
15N BETWEEN 122W AND 130W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.