Hawai'i's three highest peaks have snow and another 1 to 2 inches of snow was expected overnight, according to the National Weather Service.

While it is common to see white caps atop 13,677-foot-high Mauna Loa and 13,796-foot-high Mauna Kea on the Big Island during the winter, snow is less frequent on Maui's Haleakala, which has an elevation of 10,023 feet.

Before yesterday's snowfall, the last good dusting of snow was about four years ago, according to Haleakala National Park officials.

The National Weather Service said freezing levels are low enough for snow to accumulate on the three volcanoes down to the 7,000-foot level. A winter weather advisory warning that snow, sleet and freezing rains may cause slippery roads and limited visibility was to remain in effect until 6 a.m. today.

The summit of Haleakala National Park was closed yesterday due to hazardous driving conditions and will remain closed until 8 a.m. today, when park officials will reassess the situation. Visitors are being turned back at park headquarters at the 7,000-foot level.

Today's forecast calls for isolated showers atop Haleakala, with a high near 47. Winds from the east will remain breezy at about 25 mph, with gusts as high as 31 mph.

For the Big Island summits, the National Weather Service is expecting partly sunny skies with a slight chance of thunderstorms and isolated snow showers throughout the day. The high temperatures will be around 45 degrees at the 9,000-foot level to around 28 degrees at the summits. East winds will blow at around 10 mph.