"The other islands are having a pretty good day," said Tim Craig, lead forecaster for the National Weather Service in Honolulu.

Maui County and Big Island resident got their drenching yesterday. And Kaua'i is due for a shower tomorrow morning.

No big, bad storms have moved in to cause the dampness, Craig said.

"Believe it or not," Craig said, "it is just a trade wind day. We had an area of showers over Maui and the Big Island, and it shifted west and aimed at O'ahu. It was just a random shower event and we just happened to be under it."

The forecast still includes showers but Craig said tomorrow should be drier for everyone except Kaua'i residents.

O'ahu could be soggy on Friday, though.

"We haven't really nailed it down yet," Craig said, but there is the possibility of heavy rain and thunderstorms on Friday. There is a low pressure system — a Kona low — forming to the northwest of us, but computer models are differing and we'll have to wait and see how it comes together."

For now, the weekend forecast calls for relatively dry weather. But Craig said that could change, depending upon Friday's weather.

Reach Karen Blakeman at 535-2430 or kblakeman@honoluluadvertiser.com.