All Weather News

Severe Storms, Flooding and Blizzard Conditions in Hawaii

1 Mar 2017, 2:12 pm

Heavy rain, severe thunderstorms, and blizzard conditions are possible across the Hawaiian Islands tonight into Thursday. A Severe Thunderstorm Watch continues for the Central Islands until Noon, including Oahu and Maui. 40 to 50 mph winds have already been seen with thunderstorms passing through the state.

Thunderstorms have also been producing heavy rain, with more than 6″ falling in Oahu overnight. Roads  and bridges were closed earlier and Flash Flood Warnings issued. The warnings have expired, but a Flash Flood Watch continues for all of the islands. Some streams and normally dry gulches are expected to run high and could quickly overflow their banks. Intense rainfall in poor drainage and urban areas could also lead to flash flooding.

Winds have increased across the Big Island Summits and with heavy snow and poor visibility expected, a Blizzard Warning has been issued above 11,000 feet. Southwest winds will gust to 65 mph, creating significant blowing and drifting snow. 6″ to 10″ of accumulation is likely.

Moist and unstable conditions will maintain a threat for heavy flooding rainfall and thunderstorms through tonight. An upper trough and low pressure center is located west of Kauai and will move over the islands later today and tonight, leaving the islands under a humid southwesterly flow capable of generating spotty heavy rainfall.

As the system lifts northeast on Thursday, showers are expected to diminish Thursday night through Friday night as a more stable airmass moves over the area. A cold front then expected to move into the northern half of the island chain this weekend increasing the chance for showers once again.

For WeatherNation: Meteorologist Mace Michaels

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