HONOLULU (HawaiiNewsNow) - The National Weather Service has issued a flash flood watch for all Hawaiian islands.
Forecasters say an unstable air mass coupled with an area of deep moisture has increased the threat of flash flooding for all of the main Hawaiian islands through Friday afternoon.
A Flash flood watch is in effect until 6 pm for all main Hawaiian islands.
Winter weather advisory until 6 pm for Big Island summits.
Small craft advisory until 6 pm Saturday for Maalaea Bay, Pailolo channel, Alenuihaha channel, Big Island leeward waters, Big Island southeast waters.