UPDATE: 1:20 p.m.
A flood advisory is in effect for Maui until 4 p.m. today.
The National Weather Service issued the advisory at around 1 p.m. after radar indicated heavy rain falling at 2 to 3 inches per hour along the leeward slopes of Haleakala.
Locations in the advisory include but are not limited to Kahului, Kihei, Pukalani, Haliimaile, Pauwela, Wailea, Huelo, Keanae, Haiku-Pauwela, Paia, Makawao and Puunene.
An approaching large northwest swell could bring surf up to 20 feet to some shores and prompted forecasters today to issue a high surf advisory for most islands.
National Weather Service officials expect the swell to bring surf up to 15 to 20 feet along the north and west shores of Kauai County and the north shores of Oahu, Maui and Molokai. Oahu’s leeward coast could see surf up to 10 to 15 feet, forecasters said.
The advisory is scheduled to go into effect at 10 a.m. Wednesday and run through 6 p.m. Thursday.
“Expect strong breaking waves, shore break and strong longshore rip currents making swimming difficult and dangerous,” weather officials said in the advisory.