Hawaii is known for its tropical weather, but things might become chillier this year. A snowstorm warning was issued in some parts of Hawaii through Saturday evening.

Though snow is not an unusual occurrence in the tropical island, the severe weather storm of this level is a rare occurrence. As reported by BBC, National Weather Service (NWS) issued an extreme snowstorm alert last Saturday local time until Dec. 5, 6:00 a.m, Monday. It was also reported that up to 90 cm or three feet of snow were observed over the weekend.

"A winter storm warning means significant amounts of snow...sleet...and ice are expected or occurring. Strong winds are also possible," as seen in NWS weather warning. "This will make travel very hazardous or impossible," the agency further added.

According to the meteorologist in NWS, they reported that the summits or areas above 8,000 feet on Mauna Loa and Mauna Kea were to expect approximately 2.5 feet of snow. And, these areas should expect more snow storm in the incoming days. And in Friday morning, the accumulated snowfall between Dec. 1 through Dec. 3 ranged between 20 to 30 inches.

The rare weather occurrence in Hawaii resulted in the closure of trails near the mountains. This rare snowstorm in Hawaii is caused by the upper-level low-pressure system and deep tropical moisture present in the area.

"An upper-level low-pressure area is situated over Hawaii, directing deep tropical moisture over the state," said Honolulu-based NWS meteorologist Matthew Foster. "We're expecting another round on Sunday and Sunday night," he further added to Washington Post.

Aside from the accumulated snowfall, NWS also called for over 20 mph wind gusts and occasional below quarter-mile visibilities creating dangerous driving and hiking conditions. Due to hazardous weather conditions, the visitor center and operations on Mauna Kea are closed until further notice. The access road to the mountain is expected to remain shut down until next week.