Honolulu, Hawaii – Travel to the Big Island summits could become impossible by Saturday night as a powerful Kona storm brings heavy snow, 70 mph wind gusts, and whiteout conditions to elevations above 12,000 feet.
According to the National Weather Service in Honolulu, a Winter Storm Watch is in effect from 6 p.m. Saturday through 6 p.m. Sunday for Mauna Kea and Mauna Loa summits. Snow totals could reach up to 10 inches, while strong winds will create blowing snow and periods of zero visibility.
The most dangerous conditions are expected overnight Saturday into Sunday morning, when winds intensify and snowfall rates increase. Roads leading to summit areas, including the Mauna Kea Access Road, may become impassable. Visibility could drop to near zero at times, making navigation extremely hazardous for anyone caught outdoors.
These conditions pose a serious risk to hikers, campers, and observatory staff. Wind chills will drop sharply as gusts approach 70 mph, increasing the danger of exposure in a matter of minutes. Even experienced hikers can become disoriented in whiteout conditions.
Officials urge anyone planning travel to the summits to postpone trips until conditions improve. If you must be in the area, carry winter survival gear, monitor updates, and be prepared for rapidly changing weather.
Snow and strong winds may linger into Sunday night and early Monday, with additional advisories possible as the storm develops.
