290 
FZPN03 KNHC 281608
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC FRI SEP 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC FRI SEP 28.
24 HOUR FORECAST VALID 1200 UTC SAT SEP 29.
48 HOUR FORECAST VALID 1200 UTC SUN SEP 30.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE ROSA NEAR 17.2N 117.5W 942 MB AT 1500 UTC SEP 28
MOVING NW OR 315 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 120 KT
GUSTS 145 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM E
SEMICIRCLE...90 NM SW QUADRANT AND 80 NM NW QUADRANT.  SEAS 12
FT OR GREATER WITHIN 180 NM OF CENTER EXCEPT 210 NM NW QUADRANT
WITH SEAS TO 39 FT. ELSEWHERE WITHIN 360 NM WINDS 20 TO 33 KT.
SEAS 8 TO 12 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE ROSA NEAR 19.2N 118.6W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM W SEMICIRCLE...110 NM NE QUADRANT AND 120 NM SE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM NE AND 240 NM SW
SEMICIRCLES WITH SEAS TO 44 FT. ELSEWHERE WITHIN 360 NM WINDS 20
TO 33 KT. SEAS 10 TO 12 FT IN MIXED SWELL. REMAINDER OF AREA 
FROM 10N TO 26N BETWEEN 110W AND 125W WINDS 20 KT OR LESS. SEAS 8
TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE ROSA NEAR 23.0N 118.8W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 100 NM W SEMICIRCLE...130 NM NE QUADRANT AND 140 NM SE 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM OF CENTER WITH 
SEAS TO 40 FT. ELSEWHERE OVER OPEN WATERS WITHIN 360 NM OF CENTER
WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA N OF 16N
BETWEEN 110W AND 125W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN
MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM ROSA NEAR 26.7N 117.4W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM ROSA NEAR 26.7N 117.4W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 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.

...GALE WARNING...
.LOW PRES NEAR 11N97W 1005 MB. WITHIN 150 NM N SEMICIRCLE WINDS
20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
11N98W 1004 MB. WITHIN 210 NM N SEMICIRCLE WINDS 20 TO 30 KT.
SEAS 8 TO 12 FT. WITHIN 210 NM SE QUADRANT WINDS 20 KT OR LESS.
SEAS 8 FT IN SW SWELL.
.36 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
11N98W 1003 MB. FROM 13N TO 15N BETWEEN 97W AND 99W E WINDS 30 TO
35 KT. SEAS 12 FT. ELSEWHERE WITHIN 210 NM N SEMICIRCLE WINDS 20
TO 30 KT. SEAS 8 TO 12 FT. WITHIN 210 NM SE QUADRANT WINDS 20 KT
OR LESS. SEAS 8 FT IN SW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
12N100W 1003 MB. FROM 13N TO 15N BETWEEN 98W AND 101W E WINDS 3O
TO 35 KT. SEAS 12 FT. ELSEWHERE WITHIN 240 NM N SEMICIRCLE AND 
210 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.SYNOPSIS AND FORECAST.

.42 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W...INCLUDING GULF
OF TEHAUNTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 1500 UTC FRI SEP 28...

.SCATTERED MODERATE TO ISOLATED STRONG WITHIN 120 NM OF CENTER 
OF ROSA.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SEGEMENT OF THE MONSOON TROUGH EXTENDS FROM 08N78W TO LOW 
PRESSURE NEAR 11N97W TO 15N107W. ANOTHER SEGMENT REACHES FROM
13N124W TO 09N136W. ITCZ CONTINUES W FROM 09N136W TO BEYOND 140W.
SCATTERED MODERATE IS WITHIN 90 NM OFF THE LOW PRESSURE NEAR 
11N97W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.