There was a lot of rain - a record amount at Kahului Airport on Sunday - and high surf over the weekend and into Monday.
A total of 0.77 inch fell at Kahului Airport on Sunday, breaking the 0.6 inch record for the same day set in 1984, the National Weather Service said Monday.
More than an inch of rain fell in areas throughout Maui County overnight and Monday. For the 24-hour period ending at 2 p.m. Monday, 2.81 inches fell at Kaupo Gap, 1.71 inches at Puu Kukui in the West Maui Mountains and 1.03 inches in Kula. Elsewhere in the county, a rain gauge on the western end of Lanai logged 1.26 inches and the Kaunakakai mauka gauge recorded 1.27 inches.
The National Weather Service in Honolulu has extended a high-surf warning for north- and west-facing shores of Molokai and north-facing shores of Maui through 6 p.m. today.
A large northwest swell was gradually declining Monday with surf briefly dropping below warning levels Monday afternoon, the weather service said. Another pulse of the northwest swell was expected to push surf back to warning levels Monday night and today.
North-facing shores of Molokai and Maui were expected to see surf reaching 21 to 28 feet Monday night and today, the weather service said. Along west-facing shores of Molokai, surf was expected to reach 15 to 22 feet Monday night.
The warning means that there will be dangerous swimming conditions and deadly rip currents.
The state Department of Health issued a brown water advisory for the shoreline from Ukumehame to Lahaina on Monday around noon and advised the public to stay out of floodwaters and storm runoff. The water could contain material from overflowing cesspools and sewer manholes and pesticides, animal fecal matter, dead animals, pathogens, chemicals and other flood debris.
The Health Department urged the public to stay out of coastal waters if they were turbid and brown.
A deep low-pressure system at the surface and aloft centered north of the Hawaiian Islands was supporting a slow-moving cold front that stretched across the eastern end of the island chain, the National Weather Service said.
The weak front near Maui was expected to gradually move east through Monday, taking the inclement weather with it. High pressure following the front will usher in a cool and drier northerly breeze that will last through midweek.
Then winds will become southerly with a chance of showers returning Thursday with another front moving in during the early part of the weekend.
Today is expected to be mostly sunny with isolated showers in the afternoon. Temperatures will be 73 to 78 degrees and winds variable up to 15 mph, turning north in the afternoon with higher gusts.
The evening will be mostly clear with lows of 59 to 64 degrees. Winds will be northerly 15 mph, becoming light and variable.