

870 

FZPN01 KWBC 311532

HSFEP1



HIGH SEAS FORECAST 

NWS OCEAN PREDICTION CENTER WASHINGTON DC 

1630 UTC WED AUG 31 2016 



SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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. 

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE 

NATIONAL WEATHER SERVICE. EMAIL US AT 

VOSOPS@NOAA.GOV(LOWERCASE). 



PAN PAN 



PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT 

TO 50N 160E 



SYNOPSIS VALID 1200 UTC AUG 31. 

24 HOUR FORECAST VALID 1200 UTC SEP 01. 

48 HOUR FORECAST VALID 1200 UTC SEP 02. 



.WARNINGS. 



...GALE WARNING... 

.LOW 31N180W 1005 MB MOVING NE 20 KT. OVER FORECAST WATERS 

WITHIN 300 NM E QUADRANT WINDS 25 TO 35 KT. SEAS 10 TO 15 FT. 

ELSEWHERE WITHIN 180 NM SE OF A FRONT EXTENDING FROM 45N161W TO 

36N170W TO THE LOW AND WITHIN 180 NM W SEMICIRCLE WINDS 20 TO 30 

KT. SEAS TO 12 FT.

.24 HOUR FORECAST LOW 36N172W 1005 MB WITH NEW LOW 40N166W 1009 

MB AND SECOND NEW LOW 46N161W 1005 MB. FRONT TO EXTEND FROM 

30N179W TO THE MAIN LOW TO THE FIRST NEW LOW TO THE SECOND NEW 

LOW. WITHIN 120 NM SE OF THE FRONT WINDS 30 TO 40 KT. SEAS 11 TO 

17 FT. ELSEWHERE WITHIN 300 NM SE OF THE FRONT WINDS 25 TO 35 

KT. SEAS 8 TO 14 FT.

.48 HOUR FORECAST LOW 44N165W 1010 MB WITH SECOND LOW 51N161W 

1006 MB. WITHIN 240 NM SE QUADRANT OF FIRST LOW WINDS 25 TO 35 

KT. SEAS 9 TO 14 FT. ELSEWHERE WITHIN 240 NM SE AND E OF A FRONT 

TO EXTEND FROM 47N146W TO 42N161W TO 30N175W WINDS 20 TO 30 KT. 

SEAS TO 12 FT.



...GALE WARNING... 

.LOW 52N169E 1002 MB MOVING SE 20 KT WITH SECOND LOW 51N179W 994 

MB MOVING W 10 KT. OVER FORECAST WATERS N OF 47N W OF 173W WINDS 

20 TO 30 KT. SEAS TO 12 FT.

.06 HOUR FORECAST LOW 51N168E 997 MB WITH SECOND LOW 51N178E 994 

MB. WITHIN 240 NM W QUADRANT OF MAIN LOW WINDS 30 TO 40 KT. SEAS 

10 TO 16 FT.

.24 HOUR FORECAST COMBINED LOW 46N177E 992 MB. WITHIN 480 NM S 

AND 720 NM W QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. 

ELSEWHERE EXCEPT WITHIN 360 NM NW QUADRANT...N OF 37N W OF 175W 

WINDS 20 TO 30 KT. SEAS TO 12 FT.

.48 HOUR FORECAST LOW 48N179E 992 MB. EXCEPT WHERE NOTED 

ABOVE...WITHIN 600 NM SE SEMICIRCLE AND 720 NM W AND 900 NM N 

QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.



.SYNOPSIS AND FORECAST. 



.COMPLEX LOW WITH MAIN CENTER 53N135W 1007 MB MOVING SE 10 KT. 

WITHIN 420 NM SW SEMICIRCLE WINDS TO 25 KT. SEAS TO 10 FT. 

.24 HOUR FORECAST LOW 52N132W 1008 MB. WITHIN 240 NM SW 

SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 FT. 

.48 HOUR FORECAST LOW 48N126W 1012 MB. FROM 44N TO 50N BETWEEN 

128W AND 134W WINDS TO 25 KT. SEAS TO 8 FT. 



.OVER FORECAST WATERS FROM 30N TO 36N BETWEEN 119W AND 124W AREA 

OF N TO NW WINDS 20 TO 30 KT. SEAS TO 10 FT. 

.24 HOUR FORECAST FROM 30N TO 41N BETWEEN 119W AND 127W AREA OF 

NW WINDS 20 TO 30 KT. SEAS TO 11 FT. 

.48 HOUR FORECAST LITTLE CHANGE.



.24 HOUR FORECAST EXCEPT WHERE NOTED ABOVE OVER FORECAST WATERS 

W OF A LINE FROM 58N170W TO 65N167W AREA OF NE TO E WINDS 20 TO 

30 KT. SEAS TO 11 FT. 

.48 HOUR FORECAST N OF 62N W OF ALASKA NE WINDS 20 TO 30 KT. 

SEAS TO 10 FT.



.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST 

WATERS WITHIN 300 NM EITHER SIDE OF A LINE FROM 58N178E TO 

46N158W. 

.24 HOUR FORECAST DENSE FOG WITHIN 300 NM EITHER SIDE OF A LINE 

FROM 45N155W TO 59N179E.

.48 HOUR FORECAST DENSE FOG WITHIN AN AREA BOUNDED BY A LINE 

FROM 60N177W TO 48N143W TO 41N165W TO 52N180W TO 60N177W.



.HIGH 37N150W 1028 MB MOVING NE 05 KT. 

.24 HOUR FORECAST HIGH 38N147W 1029 MB. 

.48 HOUR FORECAST LITTLE CHANGE. 



.HIGH 56N152W 1019 MB MOVING SE 10 KT.

.24 HOUR FORECAST HIGH 53N148W 1020 MB. 

.48 HOUR FORECAST HIGH 52N141W 1022 MB. 



.FORECASTER LEE. OCEAN PREDICTION CENTER.



NATIONAL HURRICANE CENTER MIAMI FL



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

EQUATOR E OF 120W



SYNOPSIS VALID 1200 UTC WED AUG 31.

24 HOUR FORECAST VALID 1200 UTC THU SEP 01.

48 HOUR FORECAST VALID 1200 UTC FRI SEP 02.



.WARNINGS.



...HURRICANE WARNING...

.HURRICANE LESTER NEAR 17.8N 138.6W 954 MB AT 1500 UTC AUG 31

MOVING W OR 270 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 115 KT

GUSTS 140 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM N AND 60

NM S SEMICIRCLES. ELSEWHERE WITHIN 210 NM NE...150 NM SE...240

NM SW AND 300 NM NW QUADRANTS OF CENTER WINDS 20 TO 33 KT AND

SEAS 12 FT OR GREATER WITH SEAS TO 43 FT. REMAINDER FORECAST

WATERS FROM 12N TO 27N W OF 133W WINDS 20 KT OR LESS. SEAS TO 10

FT PRIMARILY IN MIXED SWELL.

.24 HOUR FORECAST HURRICANE LESTER W OF AREA NEAR 18.1N 142.4W.

MAXIMUM SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM

FORCE WINDS WITHIN 110 NM NE...70 NM SE...60 NM SW...AND 90 NM

NW QUADRANTS. OVER FORECAST WATERS FROM 13N TO 26N W OF 136W E

TO SE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.

.48 HOUR FORECAST HURRICANE LESTER NEAR 19.2N 147.2W. MAXIMUM

SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS

WITHIN 125 NM NE...90 NM SE...70 NM SW AND 110 NM NW QUADRANTS.

ASSOCIATED CONDITIONS W OF 140W.

.72 HOUR FORECAST HURRICANE LESTER NEAR 20.6N 152.5W. MAXIMUM

SUSTAINED WINDS 70 KT GUSTS 85 KT.

EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.

.96 HOUR FORECAST TROPICAL STORM LESTER NEAR 22.5N 157.5W.

MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.

.120 HOUR FORECAST TROPICAL STORM LESTER NEAR 24.5N 162.5W.

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.



.FROM 07N TO 10N BETWEEN 95W AND 105W WINDS 20 KT OR LESS. SEAS

TO 8 FT IN SW SWELL.

.06 HOUR FORECAST WITHIN 120 NM OF 09N102W AND FROM 04N TO 07N

BETWEEN 82W AND 89W WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW

SWELL. 

.24 HOUR FORECAST FROM 07N TO 11N BETWEEN 80W AND 140W WINDS 20

KT OR LESS. SEAS TO 8 FT IN SW SWELL. 

.48 HOUR FORECAST FROM 07N TO 11.5N BETWEEN 100W AND 125W WINDS

20 KT OR LESS. SEAS TO 9 FT PRIMARILY IN SW SWELL.



.N OF 27N BETWEEN 118W AND 123W WINDS 20 KT OR LESS. SEAS TO 8FT

IN MIXED S AND NW SWELL.

.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.



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



CONVECTION VALID AT 1500 UTC WED AUG 31...



.HURRICANE LESTER...NUMEROUS MODERATE TO STRONG SURROUND 15 NM

WIDE EYE WITHIN 90 NM OF LINE FROM 20N138W TO 16N140W.



.SCATTERED MODERATE ISOLATED STRONG WITHIN 60 NM OF 15.5N94.5W 

AND 

WITHIN 30 NM OF 19N106W.



.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 09N78W TO 13N95W TO 11N131W. SCATTERED

MODERATE ISOLATED STRONG WITHIN 90 NM OF LINE FROM 03N78W TO

07N82W...WITHIN 45 NM OF 04N87W...WITHIN 150 NM OF 11N95W...

WITHIN 75 NM OF 15N109W AND WITHIN 150 NM OF LINE FROM 09N109W

TO 12N132W.  



$$

.FORECASTER NELSON. NATIONAL HURRICANE CENTER.

