* WHAT...East winds 20 to 30 mph with gusts up to 50 mph expected.
* WHERE...Central Oahu, East Honolulu, Ewa Plain, Honolulu Metro, Koolau Leeward, Waianae Coast, and Waianae Mountains.
* WHEN...Until 6 AM HST Friday.
* IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles.