Flash flood, winter storm watches posted

Remigio Civitarese
Aprile 21, 2018

In addition to heavy rainfall, up to a foot of snow is forecast to blanket the Mauna Loa and Maunakea summits.

A flash flood watch remains in effect for the entire state of Hawaii as the storm system that dumped over 2 feet of rain on Kauai over the weekend makes it way back to the islands.

"Roads to the summits are expected to become snow covered and slippery, resulting in hard travel conditions", forecasters wrote.

Below the summits, rapidly rising water levels may occur on area streams and significant flooding may occur in low lying and poor drainage areas. The showers could combine with an upper-level trough moving through the state, which could produce thunderstorms, heavy rain and flash flooding, the weather service said.

The heaviest rainfall is expected to fall from Oahu eastward to the Big Island, particularly in windward areas.

Even though widespread heavy rainfall is not expected on Kauaʻi, given the high levels of saturation from recent rains, any additional moderate rain over an extended period could quickly result in flooding problems.

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