FZPN02 KWBC 181125
HSFEPI 1145
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC SUN AUG 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 18.
24 HOUR FORECAST VALID 0600 UTC AUG 19.
48 HOUR FORECAST VALID 0600 UTC AUG 20.
.WARNINGS.
…TROPICAL STORM WARNING…
.TROPICAL STORM AMPIL NEAR 40.5N 155.3E 982 MB AT 0900 UTC AUG 18
MOVING NW OR 070 DEG AT 22 KT. MAXIMUM SUSTAINED WIND 055 KT
GUSTS 070 KT. TROPICAL STORM FORCE WINDS WITHIN 145 NM NE…190
NM SE…170 NM SW…AND 115 NM NW QUADRANTS. SEAS 12 FT OR
GREATER WITHIN 240 NM N…150 NM E…420 NM S…AND 300 NM W
QUADRANTS WITH SEAS TO 28 FT. ELSEWHERE FROM 35N TO 45N W OF 164E
WINDS 20 TO 33 KT. SEAS TO 11 FT.
.24 HOUR FORECAST POST-TROPICAL AMPIL NEAR 45N166E 970 MB. WITHIN
240 NM NE…300 NM SE…240 NM SW…AND 150 NM NW QUADRANTS WINDS
35 TO 50 KT. SEAS 9 TO 34 FT…HIGHEST S OF CENTER. ELSEWHERE
WITHIN 420 NM NE AND SE…300 NM SW…AND 240 NM NW QUADRANTS
WINDS 25 TO 35 KT. SEAS 9 TO 28 FT…HIGHEST S OF CENTER. ALSO
FROM 32N TO 51N W OF 175E WINDS 20 TO 30 KT. SEAS 9 TO 22
FT…HIGHEST S OF CENTER.
.48 HOUR FORECAST POST-TROPICAL AMPIL NEAR 56N173E 969 MB. WITHIN
480 NM E AND 420 NM S QUADRANTS WINDS 30 TO 45 KT. SEAS 9 TO 20
FT…HIGHEST S OF 55N. ELSEWHERE FROM 45N TO 60N W OF 170W WINDS
25 TO 35 KT. SEAS 8 TO 22 FT…HIGHEST NEAR 48N177E. ALSO FROM
35N TO 45N W OF 174W…AND FROM 40N TO 54N BETWEEN 160W AND 174W
WINDS TO 25 KT. SEAS 8 TO 18 FT…HIGHEST FROM 37N TO 54N BETWEEN
177W AND 170E.
…GALE WARNING…
.LOW 58N175W 974 MB MOVING NE 30 KT. WITHIN 300 NM S SEMICIRCLE
WINDS 30 TO 45 KT. SEAS 9 TO 18 FT. ELSEWHERE FROM 49N TO 62N
BETWEEN 155W AND 173E…AND WITHIN 420 NM W OF A LINE FROM
40N166W TO 58N150W WINDS 25 TO 35 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW 66N162W 989 MB. N OF 53N BETWEEN 144W AND
174W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW DISSIPATED INLAND. CONDITIONS DIMINISHED.
…GALE WARNING…
.LOW 39N178E 1007 MB MOVING NE 10 KT. FROM 35N TO 42N BETWEEN
178W AND 174E WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 41N180W 1010 MB. FROM 40N TO 48N BETWEEN
167W AND 180W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.
…GALE WARNING…
.48 HOUR FORECAST NEW LOW 60N145W 1010 MB. FROM 54N TO 60N
BETWEEN 142W AND 155W WINDS 25 TO 35 KT. SEAS TO 10 FT.
.SYNOPSIS AND FORECAST.
.LOW 35N175W 1014 MB MOVING NE 10 KT. FROM 30N TO 40N BETWEEN
170W AND 176W WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.
.LOW 38N137W 1016 MB MOVING E 10 KT. FROM 36N TO 47N BETWEEN 138W
AND 149W WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 37N134W 1015 MB. WITHIN 150 NM SE
QUADRANT…AND WITHIN 360 NM NW AND W OF A LINE FROM 53N130W TO
34N146W WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED. FROM 31N TO 44N BETWEEN 140W
AND 155W WINDS TO 25 KT. SEAS TO 8 FT.
.FROM 45N TO 58N BETWEEN 127W AND 138W WINDS TO 25 KT. SEA
