Weather Forecast for Big Island of Hawaii

At 809 PM HST, radar indicated moderate to heavy rain over the Hamakua Coast between Hakalau and Upolu Point. Rainfall intensity has diminished some, but was still falling at a rate of 1 to 2 inches per hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar. IMPACT...Flooding in drainages, streams, rivers, roads, properties, and other low-lying areas. Public road closures possible in some areas. Landslides are possible in steep terrain. Some locations that will experience flash flooding include... Kapaau, Honokaa, Waipio Valley, Kamuela, Kukuihaele, Waimanu Valley, Pololu Valley, Paauilo, Kawaihae, Kohala Ranch, Halaula, Hawi, Ookala, Laupahoehoe, Ninole and Mahukona.

Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry. Do not cross fast flowing or rising water in your vehicle, or on foot. Turn around, don't drown. The heavy rains may cause rock and mudslides in steep terrain areas.

* WHAT...For the Wind Advisory, northeast winds 20 to 30 mph with gusts to around 50 mph. For the High Wind Warning, northeast winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Most areas of all Hawaiian Islands. * WHEN...For the Wind Advisory, until 6 AM HST Sunday. For the High Wind Warning, from 6 AM Sunday to 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. 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.

Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. A High Wind Warning means that winds are expected to be at least 40 mph, with gusts over 60 mph. Stay away from downed power lines. Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.

* WHAT...For the Wind Advisory, northeast winds 20 to 30 mph with gusts to around 50 mph. For the High Wind Warning, northeast winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Most areas of all Hawaiian Islands. * WHEN...For the Wind Advisory, until 6 AM HST Sunday. For the High Wind Warning, from 6 AM Sunday to 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. 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.

Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. A High Wind Warning means that winds are expected to be at least 40 mph, with gusts over 60 mph. Stay away from downed power lines. Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.