FZPN02 KWBC 172325
HSFEPI 2345
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC SAT AUG 17 2024
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
[email protected](LOWERCASE).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
SECURITE
PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1800 UTC AUG 17.
24 HOUR FORECAST VALID 1800 UTC AUG 18.
48 HOUR FORECAST VALID 1800 UTC AUG 19.
.WARNINGS.
…TROPICAL STORM WARNING…
.24 HOUR FORECAST TROPICAL STORM AMPIL NEAR 42.5N 160.2E.
MAXIMUM SUSTAINED WIND 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 190 NM NE…190 NM SE…180 NM SW AND 120 NM NW
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 190 NM NE…360 NM
SE…360 NM SW…AND 240 NM NW QUADRANTS WITH SEAS TO 32 FT.
ELSEWHERE WITHIN 360 NM OF CENTER WINDS 20 TO 33 KT. SEAS TO 12
FT.
.48 HOUR FORECAST POST-TROPICAL AMPIL NEAR 49N173E 980 MB. FROM
47N TO 51N BETWEEN 173E AND 178E WINDS 40 TO 55 KT. SEAS 17 TO
26 FT. ELSEWHERE WITHIN 300 NM E SEMICIRCLE…300 NM SW AND 240
NM N QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 21 FT. ALSO WITHIN
480 NM S AND 360 NM N SEMICIRCLES WINDS 20 TO 30 KT. SEAS 9 TO
14 FT.
…STORM WARNING…
.LOW 57N180W 974 MB MOVING NE 15 KT. FRONT EXTENDS FROM 62N171W
TO 53N168W TO 48N170W TO 41N177W. N OF 55N BETWEEN 174E AND 179E
WINDS 40 TO 55 KT. SEAS 17 TO 24 FT. ELSEWHERE FROM 51N TO 58N
BETWEEN 172W AND 172E…AND W OF A LINE FROM 65N168W TO
62N175W…ALSO WITHIN 240 NM E OF FRONT S OF 57N WINDS 25 TO 40
KT. SEAS 9 TO 18 FT. ALSO N OF 48N BETWEEN 168E AND 168W…AND
WITHIN 360 NM E OF FRONT WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 61N167W 985 MB. WITHIN 360 NM S SEMICIRCLE
AND 180 NM NE QUADRANT WINDS 30 TO 45 KT. SEAS 10 TO 18 FT.
ELSEWHERE WITHIN 420 NM S SEMICIRCLE AND 240 NM NE
QUADRANT…AND WITHIN 240 NM E OF A LINE FROM 59N153W TO 47N167W
TO 44N170W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW DISSIPATED INLAND. N OF 63N E OF 165W
WINDS 20 TO 30 KT. SEAS TO 9 FT.
…GALE WARNING…
.LOW 39N174E 1003 MB MOVING E 15 KT. WITHIN 120 NM NW AND S
SEMICIRCLES WINDS 25 TO 40 KT. SEAS 9 TO 14 FT. ELSEWHERE FROM
36N TO 41N BETWEEN 172E AND 176E WINDS 20 TO 30 KT. SEAS TO 11
FT.
.24 HOUR FORECAST LOW 40N180W 1009 MB. WITHIN 180 NM N
SEMICIRCLE AND 120 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS TO 12
FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.
…GALE WARNING…
.48 HOUR FORECAST FROM 58N TO 60N BETWEEN 146W AND 153W WINDS 25
TO 35 KT. SEAS TO 10 FT.
.SYNOPSIS AND FORECAST.
.LOW 33N175W 1014 MB MOVING NE 05 KT. FROM 30N TO 35N BETWEEN
171W AND 175W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.
.FROM 39N TO 48N BETWEEN 140W AND 146W WINDS TO 25 KT. SEAS TO 8
FT.
.24 HOUR FORECAST FROM 35N TO 45N BETWEEN 145W TO 150W WINDS TO
25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 40N TO 44N BETWEEN 143W ND 147W WINDS TO
25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 43N173W 1015 MB. WITHIN 120 NM E AND N
SEMICIRCLES WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 48N170W 1015 MB. FROM 44N TO 51N BETWEEN
165W AND 169W WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 45NN TO 50N W OF 163E WINDS TO 25 KT.
SEAS TO 11 FT.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 63N
BETWEEN 164W AND 172W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 49N BETWEEN 164W AND
169W…ALSO FROM 53N TO 59N BETWEEN 152W AND 154W.
.48 HOUR FORECAST DENSE FOG FROM 45N TO 49N BETWEEN 164W AND
171W.
.FORECASTER SHAW. 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 1800 UTC SAT AUG 17.
24 HOUR FORECAST VALID 1800 UTC SUN AUG 18.
48 HOUR FORECAST VALID 1800 UTC MON AUG 19.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.LOW PRES NEAR 13N107W 1008 MB. WITHIN 120 NM SE QUADRANT OF LOW
CENTER SW TO W WINDS 20 TO 25 KT. SEAS TO 8 FT. FROM 04N TO 10N
BETWEEN 107W AND 118W S TO SW WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW PRES…PSBL TRPCL CYCLONE…NEAR 14N111W
1007 MB. WITHIN 180 NM SE QUADRANT OF LOW CENTER WINDS 20 TO 30
KT. SEAS 8 TO 10 FT. ELSEWHERE FROM 07N TO 11N BETWEEN 105W AND
120W S TO SW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT IN SW SWELL.
.48 HOUR FORECAST LOW PRES…PSBL TRPCL CYCLONE…NEAR 15N115W
1006 MB. WITHIN 210 NM SE QUADRANT OF LOW CENTER WINDS 20 TO 30
KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 08N TO 14N BETWEEN 108W AND
120W SW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT IN SW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 13N128W 1008 MB. WITHIN 180 NM
SE QUADRANT OF LOW CENTER SW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
CONVECTION VALID AT 2100 UTC SAT AUG 17…
.LOW PRES NEAR 13N107W 1008 MB…NUMEROUS MODERATE TO SCATTERED
STRONG FROM 13N TO 16N BETWEEN 106W AND 110W.
.LOW PRES NEAR 12N138W 1012 MB ALONG A TROPICAL WAVE NEAR 138W.
SCATTERED MODERATE FROM 10N TO 15N BETWEEN 130W AND 138W.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH…
THE MONSOON TROUGH EXTENDS FROM 10N85W TO 09N95W TO A 1008 MB
LOW PRESSURE SITUATED NEAR 13N106W TO ANOTHER 1008 MB LOW
PRESSURE LOCATED NEAR 15N120W TO BEYOND 13N140W. ASIDE FR
