Keep those umbrellas and rain jackets close at hand for at least another day, especially if you're in the windward areas of Kauai and Oahu. A trough aloft over the western islands will keep wet weather in the forecast for those islands, while ridging over the eastern half of the state will mean drier than normal weather for the Big Island. This scenario will change as the trough fills in around late Tuesday or Wednesday, but more wet weather is expected Wednesday night into Thursday as the remnants from former hurricane Frank move through the islands.
Heavy downpours are still possible, with the highest chances for Kauai. It's probably best to hold off on hiking until another day because there's still a chance for flash flooding.
There's already been a lot of rain, especially on Oahu. The rain gage at Punaluu Stream picked up 5.58 inches in the 24 hours between 9 a.m. Sunday and 9 a.m. Monday. Some heavy rain crossed over the Koolau range, with 5.31 inches of rain at the Tunnel RG (near the Harano Tunnels), 5.26 inches at Poamoho RG 1, and 4.68 inches at Moanalua RG.
On the Garden Isle, 4.36 inches of rain was recorded atop Mount Waialeale and 4.06 inches at Wainiha.
Trade winds will be increasing and will remain quite breezy for much of the week. Winds are already strong enough for a Small Craft Advisory for the usual windier waters around Maui County and the Big Island. There's also a choppy trade wind swell for east shores, while south shores have some slightly elevated surf through the week.
The weekend weather may be influenced by newly-formed Tropical Storm Howard, still far to the east of the state. The current track has its remnants passing north of Hawaii seven or eight days from now, but it's still way too soon to say exactly what will happen. We'll keep you posted.