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1７日　1800UTC　/　18日　0700日本時
海洋気象局　発表

　東太平洋　北部の情報

低気圧　59N　140W　1012mb SE 20ノットで移動

２４時間予報

・低気圧が発生し、状況は悪化します。
・37N　から　52N　及び　123W　〜　135W　に囲まれた海域
　風　20ノット〜30ノット（37〜56ｍ）
　波　3.7ｍ

　この暴風域からは、外れているものの、現在この
　エリアに向かっている形となります。

念のため　原文を以下に、　もし誤りがありましたら、
ご指摘お願いします。

　参照URL

　https://ocean.weather.gov/shtml/NFDHSFEP1.php

FZPN01 KWBC 172131
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU AUG 17 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

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.

...GALE WARNING...
.LOW 59N140W 1012 MB MOVING SE 20 KT. BETWEEN 240 NM AND 480 NM
SW QUADRANTS WINDS 25 TO 40 KT. SEAS TO 12 FT. ELSEWHERE WITHIN
240 NM NW...420 NM SE AND 540 NM SW QUADRANTS WINDS TO 25 KT.
SEAS TO 8 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

...GALE WARNING...
.FROM 46N TO 53N BETWEEN 126W AND 132W WINDS 25 TO 40 KT. SEAS
TO 10 FT. ELSEWHERE FROM 34N TO 55N BETWEEN 124W AND 138W WINDS
20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST FROM 37N TO 52N BETWEEN 123W AND 135W WINDS 20
TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST FROM 37N TO 45N BETWEEN 124W AND 128W WINDS 25
TO 40 KT. SEAS 8 TO 13 FT. ELSEWHERE FROM 31N TO 53N BETWEEN
122W AND 136W WINDS TO 25 KT. SEAS TO 9 FT.