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Flash Flood Watch, Winter Weather Advisory This Weekend
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by Big Island Video News
on Feb 17, 2018 at 7:58 am

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STORY SUMMARY

HAWAII ISLAND - The threat of heavy rainfall will persist through the Monday holiday, and this watch may need to be expanded westward to additional islands by Sunday.

(BIVN) – A Flash Flood Watch continues for Maui and the Big Island from noon today through Monday afternoon. The National Weather Service in Honolulu has also issued a Winter Weather Advisory for Big Island Summits above 10,500 feet.

Forecasters say that due to high instability and light winds, heavy showers and thunderstorms will likely develop rapidly during the afternoon hours. “Soils across much of the Big Island and parts of Maui are already saturated due to recent rains,” a morning NWS weather alert reads, “which could lead to the faster onset of flash flooding.”

According to the National Weather Service:

Moisture along a dissipating front will remain stalled around the Big Island and Maui, while a strong upper level trough approaches from the northwest. As the upper level trough moves over the state, heavy showers and thunderstorms will likely develop around the eastern end of the island chain Saturday afternoon. The threat of heavy rainfall will persist through the Monday holiday, and this watch may need to be expanded westward to additional islands by Sunday.

As the strong upper level trough moves over Mauna Kea and Mauna Loa on Saturday, heavy snow showers and
thunderstorms will likely develop.

“Snow expected” on the summits, forecasters say. “Plan on slippery road conditions. Travel to the summits is discouraged. Total snow accumulations of 2 to 4 inches, with localized amounts up to 10 inches, are expected.” The road to the summit of Maunakea is closed at the Visitor Information Station at an elevation of 9,200 feet, rangers say.


Filed Under: Breaking Tagged With: Flash Flood Watch, Winter Weather Advisory

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