A flash flood warning has expired for Oahu.

The warning went through 9:15 p.m., and had been issued after heavy rains pelted the west side.

However, a flash flood watch remains in effect until 6 p.m. tomorrow.

From 5 p.m. to 8 p.m., more than an inch of rain was recorded at the Waiawa Correctional Facility and Mililani and the Kahuku Training area.

At 7:25 p.m., radar showed heavy rain falling at more than 2 inches per hour over portions of O'ahu.

Kevin Kodama, National Weather Service hydrologist, said a large band of showers came into the Wai'anae coastline this evening, hitting an area already saturated by yesterday's deluge that dumped up to 9 inches of rain in Waianae Valley.

"The main concern is that the ground is so saturated already from the previous day's rains that flooding can occur quickly," Kodama said.

For the most part, officials reported only rain ponding on roadways, said John Cummings, city Department of Emergency Management public information officer. On Fort Weaver Road, officials reported a stalled car in the southbound lane, which was closed until the car was removed and the water abates.

"Just ponding issues on the roadway, nothing outstanding to report," Cummings said.

Meanwhile, three shelters set up by the American Red Cross, Hawai'i Chapter are still open, and are housing people who arrived yesterday, Cummings said.

The shelters are: