821 FZHW70 PHFO 241321 MWSHFO Marine Weather Statement National Weather Service Honolulu HI 321 AM HST Tue Feb 24 2026 PHZ117-122-250230- Maui County Windward Waters-Big Island Windward Waters- 321 AM HST Tue Feb 24 2026 ...HEAVY SURGES IN NORTH FACING HARBORS THROUGH TONIGHT.. A north-northeast swell from 010 to 030 degrees has peaked and will hold through this morning, then begin a slow decline late this afternoon. The large swell will produce hazardous conditions with large breaking waves at harbor entrances and heavy surges in north facing harbors, mainly in Hilo and Kahului. Mariners using these harbors should exercise caution when entering or leaving port. $$