* WHAT...Northeast winds 25 to 35 mph gusting to 60 mph, with some locally higher gusts up to 70 mph. * WHERE...All Hawaiian islands. * WHEN...Until 6 PM HST Monday. * IMPACTS...Damaging winds may blow down trees and power lines and damage roofs. Power outages are possible. Travel will be difficult, especially for high profile vehicles.

...WINTER STORM WARNING IN EFFECT FOR THE BIG ISLAND SUMMITS ABOVE 11000 FEET ELEVATION... .A disturbance aloft in combination with abundant moisture will bring periods of heavy snowfall to the Big Island summits of Mauna Kea and Mauna Loa through Monday. * WHAT...Periods of heavy snow with storm total snow accumulations from 10 to 16 inches are expected. Winds could gust as high as 50 mph. * WHERE...Big Island Summits of Mauna Kea and Mauna Loa above 11,000 feet elevation. * WHEN...Until 6 PM HST Monday. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility.

...FLOOD WATCH IN EFFECT FOR ALL HAWAIIAN ISLANDS THROUGH MONDAY AFTERNOON... * WHAT...Flash flooding caused by periods of excessive rainfall and terrain anchoring storms will continue. * WHERE...All Hawaiian islands. * WHEN...Through Monday afternoon. * IMPACTS...Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may receive more significant flooding and property damage due to rapid runoff. * ADDITIONAL DETAILS... - A surface trough near the island of Maui continues to blanket the Hawaiian Islands in deep unstable tropical moisture through Monday. An upper level low just west of the islands and windy trade winds will produce periods of heavy rain, a few thunderstorms and flash flooding threats lasting through Monday afternoon. The highest threat for flash flooding will remain along the windward slopes of each island potentially driven by terrain anchored heavy showers.