A powerful winter storm is expected to bring heavy rain, strong winds and possible flash flooding across Hawaii starting this evening, according to the National Weather Service.

The National Weather Service has issued a High Wind Watch for all Hawaiian islands from the evening of Jan. 29 to late night of Jan. 30., with the strongest winds likely to be across windward and mauka sides of Oʻahu and Kauaʻi.

Flood Watches are in effect for all the Hawaiian islands as a storm swings by bringing heavy rain, possible strong thunderstorms and damaging wind gusts.