773 
FZPN03 KNHC 010921
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SUN OCT 01.
24 HOUR FORECAST VALID 0600 UTC MON OCT 02.
48 HOUR FORECAST VALID 0600 UTC TUE OCT 03.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM SERGIO NEAR 11.5N 108.6W 995 MB AT 0900 UTC OCT 
01 MOVING W OR 270 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 60 KT 
GUSTS 75 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 24 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 111W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED 
SWELL.
.12 HOUR FORECAST HURRICANE SERGIO NEAR 11.4N 110.3W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. SEAS 12 FT OR GREARTER WITHIN 
120 NM OF CENTER...EXCEPT 180 NM NE QUADRANT WITH SEAS TO 26 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 05N TO 18N BETWEEN 104W AND 114W WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN MIXED SWELL. 
.24 HOUR FORECAST HURRICANE SERGIO NEAR 11.5N 112.5W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM E SEMICIRCLE...50 NM SW QUADRANT AND 70 NM NW 
QUADRANT. SEAS 12 FT OR GREARTER WITHIN 150 NM OF CENTER... 
EXCEPT 210 NM NE QUADRANT WITH SEAS TO 32 FT. 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 105W AND 116W WINDS 20 KT OR LESS. SEAS TO 9 FT 
IN MIXED SWELL. 
.48 HOUR FORECAST HURRICANE SERGIO NEAR 12.8N 116.1W. 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 
WITH SEAS TO 36 FT. 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 04N TO 19N BETWEEN 105W AND 
121W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE SERGIO NEAR 14.9N 118.8W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE SERGIO NEAR 16.8N 121.2W. MAXIMUM 
SUSTAINED WINDS 95 KT GUSTS 115 KT.
.120 HOUR FORECAST HURRICANE SERGIO NEAR 17.9N 123.2W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM ROSA NEAR 26.7N 117.0W 994 MB AT 0900 UTC OCT 01 
MOVING NE OR 035 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NE 
QUADRANT...130 NM SE QUADRANT...50 NM SW QUADRANT...AND 70 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM OF CENTER EXCEPT 
120 NM SW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE WITHIN 210 NM 
OF CENTER WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA 
FROM 20N TO 30N BETWEEN 110W AND 123W WINDS 20 KT OR LESS. SEAS 
8 TO 10 FT IN MIXED SWELL. FROM 12N TO 20N BETWEEN 118W AND 125W 
WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL DEPRESSION ROSA INLAND NEAR 30.1N 
114.8W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. IN THE GULF 
OF CALIFORNIA N OF 28N S WINDS 20 TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST POST-TROPICAL ROSA NEAR 35.9N 112.2W. MAXIMUM 
SUSTAINED WINDS 15 KT GUSTS 20 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.

.WITHIN 30 NM OF A LINE FROM 16N95W TO 15N95W TO 14.5N96W... 
INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS 
8 TO 9 FT FT.
.06 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 16N95W TO 15N95W 
TO 14N97W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 
30 KT. SEAS 8 TO 10 FT FT.
.24 HOUR FORECAST N OF 14N BETWEEN 94W AND 96W N WINDS 20 TO 30 
KT. SEAS 8 TO 10 FT. 
.30 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 16N95W TO 15N95W 
TO 13.5N95.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 
TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST N OF 14N 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 0900 UTC MON OCT 01...

HURRICANE ROSA...NUMEROUS MODERATE BETWEEN 60 NM AND 180 NM NE 
QUADRANT OF CENTER.

T.S. SERGIO...NUMEROUS MODERATE TO STRONG WITHIN 120 NM NW 
SEMICIRCLE OF CENTER. NUMEROUS MODERATE ISOLATED STRONG IN BANDS 
TO THE SE AND NW OF THE CENTER.  

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 06N76W TO 09N90W TO 09N101W. 
ANOTHER SEGMENT OF THE MONSOON TROUGH REACHES FROM 13N124W TO 
10N140W. SCATTERED MODERATE CONVECTION IS NOTED FROM 06N TO 10N 
BETWEEN 80W AND 90W...AND FROM 06N TO 09N BETWEEN 94W AND 99W. 
SIMILAR CONVECTION IS ALSO NOTED FROM 10N TO 13N BETWEEN 125W 
AND 131W. A CLUSTER OF MODERATE TO ISOLATED STRONG CONVECTION IS 
N OF 14N BETWEEN 92W AND 95W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.