497 
FZPN03 KNHC 070912
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI SEP 7 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI SEP 7.
24 HOUR FORECAST VALID 0600 UTC SAT SEP  8.
48 HOUR FORECAST VALID 0600 UTC SUN SEP  9.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE OLIVIA NEAR 19.6N 131.2W 955 MB AT 0900 UTC SEP 07
MOVING WNW OR 290 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM W
SEMICIRCLE...100 NM NE QUADRANT AND 90 NM SE QUADRANT. SEAS 12 FT
OR GREATER WITHIN 180 NM NW AND SE QUADRANTS...210 NM NE 
QUADRANT AND 150 NM SW QUADRANT WITH SEAS TO 41 FT. ELSEWHERE
WITHIN 210 NM E SEMICIRCLE AND 180 NM W SEMICIRCLE WINDS 20 TO 
33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 420 NM NE 
QUADRANT...480 NM SE QUADRANT AND 330 NM W SEMICIRCLE WINDS 20 KT
OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE OLIVIA NEAR 20.9N 135.7W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT. LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WINDS. SEAS 12 FT OR GREATER WITHIN 240 NM
NE QUADRANT...150 NM S SEMICIRCLE AND 180 NM NW QUADRANT WITH 
SEAS TO 37 FT. ELSEWHERE WITHIN 210 NM N SEMICIRCLE AND 150 NM S 
SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA
WITHIN 420 NM N SEMICIRCLE AND 330 NM S SEMICIRCLE WINDS 20 KT 
OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE OLIVIA W OF AREA NEAR 21.7N 140.9W. 
MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE 
WINDS WITHIN 80 NM NW AND SE QUADRANTS...90 NM NE QUADRANT AND 70
NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM N 
SEMICIRCLE...120 NM SE QUADRANT AND 150 NM SW QUADRANT WITH SEAS 
TO 29 FT. ELSEWHERE WITHIN 180 NM N SEMICIRCLE AND 150 NM S 
SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA 
WITHIN 480 NM N SEMICIRCLE...240 NM SE QUADRANT AND 300 NM NW 
QUADRANT WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE OLIVIA NEAR 22.0N 145.6W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE OLIVIA NEAR 22.0N 145.6W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.120 HOUR FORECAST TROPICAL STORM OLIVIA NEAR 22.0N 145.6W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.

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.

.LOW PRES NEAR 15N111W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 
FT. POSSIBLE TROPICAL CYCLONE FORMATION.
.12 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N113W 1007 MB. WITHIN 360 NM SE QUADRANT OF LOW S TO SW WINDS 
20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE WITHIN 510 NM SE
SEMICIRCLE OF LOW WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED 
SE AND SW SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N114W 1008 MB. WITHIN 300 NM SE QUADRANT OF LOW S TO SW WINDS
20 TO 25 KT. SEAS 9 TO 10 FT. ELSEWHERE WITHIN 480 NM SE
SEMICIRCLE OF LOW WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SE
AND SW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
15N116W 1006 MB. WITHIN 300 NM SE SEMICIRCLE S TO SW WINDS 20 TO
25 KT. SEAS 8 TO 10 FT. ELSEWHERE WITHIN 480 NM SE SEMICIRCLE OF
LOW WINDS 20 KT OR LESS. SEAS 8 TO 10 FT.

.WITHIN AREA BOUNDED BY 04N97W TO 03.4S84W TO 03.4S120W TO
01N128W TO 10N107W TO 03N104W TO 04N97W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SW AND NW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 08N104W TO 05N83W TO 
01N83W TO 01N104W TO 08N104W...EXCEPT LEE OF GALAPAGOS ISLANDS...
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SW AND NW SWELL. 
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 07N91W TO 04N94W TO 
04N100W TO 06N104W TO 07N103W TO 07N95W TO 07N91W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN MIXED SW AND NW SWELL.

.48 HOUR FORECAST WITHIN AREA BOUNDED BY 30N122W TO 28N125W TO
28N126W TO 29N128W TO 30N128W TO 30N122W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN MIXED S AND NW SWELL.

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

CONVECTION VALID AT 0815 UTC FRI SEP 7...

.HURRICANE OLIVIA...NUMEROUS MODERATE TO STRONG WITHIN 90 NM OF 
CENTER EXCEPT WITHIN 75 NM NE QUADRANT.

.LOW PRES NEAR 15N111W...SCATTERED MODERATE ISOLATED STRONG 
WITHIN 240 NM NW SEMICIRCLE. SCATTERED MODERATE FROM 08N TO 11N 
BETWEEN 111W AND 117W.

.SCATTERED MODERATE TO STRONG FROM 18N TO 24N WITHIN 180 NM OF 
MEXICO.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM LOW PRESSURE OVER NORTHERN
COLOMBIA NEAR 10N74W TO 08N82W TO 10N97W TO LOW PRESSURE NEAR
15N111W TO 10N118W THEN RESUMES FROM 15N130W TO 13N140W. 
SCATTERED MODERATE ISOLATED STRONG FROM 09N TO 11N BETWEEN 93W 
AND 97W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.