FZHW60 PHFO 220958
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
1158 PM HST Fri Aug 21 2026

Hawaiian offshore waters beyond 40 nautical miles out to 240
nautical miles including the portion of the Papahanaumokuakea
Marine National Monument east of French Frigate Shoals

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.

PHZ105-221645-
1158 PM HST Fri Aug 21 2026

.Synopsis for the Hawaiian offshore waters...
At 1100 PM HST, Tropical Storm Moke was located at 14.4N 149.0W...
moving WNW at 7 knots. Tropical Storm Moke is expected to track 
across the S offshore waters Saturday night through early Monday 
morning.

MOKE FORECAST POSITIONS 
800 AM HST SATURDAY  15.0N 150.7W
800 PM HST SATURDAY  15.4N 152.8W
800 AM HST SUNDAY    15.8N 155.2W
800 PM HST SUNDAY    16.4N 157.8W
800 AM HST MONDAY    16.8N 160.2W
800 PM HST MONDAY    17.2N 162.6W
800 PM HST TUESDAY   18.2N 167.8W
800 PM HST WEDNESDAY 19.2N 172.3W


$$

PHZ180-221645-
Hawaiian Offshore Waters-
1158 PM HST Fri Aug 21 2026

...TROPICAL STORM WARNING IN EFFECT...

.REST OF TONIGHT...NW Half, E winds 10 to 15 kt. SE Half, NE winds 
to 25 kt. Seas 6 to 9 ft. 
.SATURDAY...NW Half, E winds 10 to 20 kt. SE Half, NE winds 20 to
30 kt with seas building 7 to 11 ft in the afternoon. Isolated 
thunderstorms SE Waters. 
.SATURDAY NIGHT...TROPICAL STORM CONDITIONS SE HALF. Elsewhere, E
NE winds 15 to 25 kt. Seas 6 to 13 ft. Isolated thunderstorms SE 
Waters. 
.SUNDAY...TROPICAL STORM CONDITIONS S OF 17N. Elsewhere, E winds 
10 to 20 kt. Seas 7 to 12 ft. Isolated thunderstorms SE Waters.
.SUNDAY NIGHT...TROPICAL STORM CONDITIONS S OF 20N W OF 155W.
Elsewhere, E winds 15 to 25 kt. Seas 7 to 10 ft, higher S of 19N W
of 158W. Isolated thunderstorms S of 20N. 
.MONDAY THROUGH WEDNESDAY...E winds 10 to 20 kt. Seas 6 to 8 ft. 
Isolated thunderstorms S Half.

$$