Update: More snow expected at Big Island summits with extension of winter weather advisory

Update at 4:43 a.m. April 18: Additional snow accumulation of up to 2 inches is forecast for Big Island summits as the winter weather advisory for Mauna Kea and Mauna Loa has been extended until 6 a.m. Saturday.

National Weather Service forecasters in Honolulu say travel could be very difficult in the summit regions, with blowing snow significantly reducing visibility at times, including periods of zero visibility.

Original post from 7:18 a.m. April 17: Snow is coming to Big Island summits.

A slow-moving upper-level trough will move through the islands today through Friday, bringing periods of snow to Mauna Kea and Mauna Loa, according to the National Weather Service in Honolulu. A winter weather advisory will be in place starting at noon.

Snow accumulations of 3 to 5 inches are expected on summits above 11,000 feet.

Those traveling on Daniel K. Inouye Highway during that time could see slippery roads due to periods of sleet or freezing rain.