PHZ105-212215-
500 AM HST Mon Sep 21 2026
.Synopsis for the Hawaiian offshore waters...
A trough, which may develop into a tropical cyclone, will
approach from the E on Tuesday and bring renewed thunderstorm
potential through Friday. Fresh to strong trades continue through
most of the week before strengthening heading into the weekend.
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PHZ180-212215- Hawaiian Offshore Waters- 500 AM HST Mon Sep 21 2026 TODAY E winds 15 to 25 kt. Seas 7 to 9 ft. Isolated thunderstorms S of 18N. TONIGHT E winds 10 to 20 kt N of 24N, E 15 to 25 kt elsewhere. Seas 7 to 9 ft. Isolated thunderstorms S of 18N. TUESDAY THROUGH WEDNESDAY NE winds 15 to 25 kt. Seas 6 to 11 ft, highest over SE waters. Isolated thunderstorms SE Waters. THURSDAY NE winds 15 to 25 kt. Seas 6 to 9 ft. Isolated thunderstorms SE Waters. FRIDAY E winds 20 to 30 kt. Seas 7 to 10 ft. Isolated thunderstorms SE Waters. $$
PHZ180-212215- Hawaiian Offshore Waters- 500 AM HST Mon Sep 21 2026 TODAY E winds 15 to 25 kt. Seas 7 to 9 ft. Isolated thunderstorms S of 18N. TONIGHT E winds 10 to 20 kt N of 24N, E 15 to 25 kt elsewhere. Seas 7 to 9 ft. Isolated thunderstorms S of 18N. TUESDAY THROUGH WEDNESDAY NE winds 15 to 25 kt. Seas 6 to 11 ft, highest over SE waters. Isolated thunderstorms SE Waters. THURSDAY NE winds 15 to 25 kt. Seas 6 to 9 ft. Isolated thunderstorms SE Waters. FRIDAY E winds 20 to 30 kt. Seas 7 to 10 ft. Isolated thunderstorms SE Waters. $$