UPDATE: 12 p.m.

Gov. Josh Green said most state offices, agencies and services closed for severe weather today will reopen for regular service to the public on Tuesday.

There may be some exceptions, including state parks or other facilities that suffered weather-related damage. The state Supreme Court, for example, will have partial capacity after the weather toppled a large banyan tree.

Public schools, public charter schools, and the University of Hawaii are set to reopen, along with the state Executive Branch departments, the Hawaii State Legislature and most of the Judiciary. The Judiciary will send out its own detailed guidance.

“I want to thank all essential employees for reporting to work to keep the public safe and keep the state operating, while others were on Administrative Leave,” said Green in a news release. “I see and humbly appreciate your sacrifice and dedication to serving the people of Hawaii. To our residents and visitors, we send a big mahalo for staying safe during this high-wind and heavy-rain event.”

The governor’s emergency proclamation issued in advance of the storm on Friday will expire on Wednesday, unless damage assessments necessitate an extension.

Maui County said with the weather anticipated to improve and no individuals utilizing the site, the temporary evacuation point at King Kekaulike High School gymnasium will be closed at 1 p.m. today, pending no changes in weather.

Hawaii County, meanwhile, is gathering information on property damage and assistance needed due to the storm.

Damage reports can be submitted to Civil Defense via bit.ly/HICivilDefense Opens in a new tab. Assistance can be requested via the Hawai`i County Civil Defense Agency website at bit.ly/HICivilDefense Opens in a new tab.

If unable to file a report online, call Civil Defense at (808) 935-0031.

11:28 a.m.

All University of Hawaii campuses will reopen Tuesday to resume operations and classes, according to a news release.

EARLIER COVERAGE

A powerful winter storm continues to batter the Hawaiian islands with a combination of heavy high-altitude snow, damaging 60 mph wind gusts and dangerous coastal flooding.

Heavy rainfall is currently drenching Hawaii island, triggering a flood advisory as slow-moving storms soak already saturated ground. Hamakua and Hilo districts are seeing the heaviest rain. Other locations that will experience flooding include Kapaau, Honokaa, Paauilo, Kukuihaele, Waipio Valley, Kamuela, Waimanu Valley, Ookala, Laupahoehoe, Pololu Valley, Ninole, Kohala Ranch, Halaula, Hakalau, Honomu, Hawi, Pepeekeo, Papaikou, Mahukona and Paukaa.

The flood advisory for Hawaii island is in effect through 9 a.m.

Forecasters warn that even moderate additional rainfall of 1 inch per hour could cause streams to overflow. This poses a significant threat to low-water crossings, particularly along Highway 19, which may become impassable if conditions persist.

>> RELATED: State, DOE schools, UH campuses close due to rain, flood and winds

Residents are urged to stay away from drainage ditches and streams. Runoff can cause water levels to rise rapidly and unpredictably, creating dangerous conditions even in areas where it is not currently raining.

A statewide flood watch remains in effect for all Hawaiian islands through 6 p.m. this evening. Deep tropical moisture is creating “training” storms — heavy showers that move over the same areas repeatedly — significantly increasing the risk of sudden flash flooding.

Emergency officials warn that urban areas are at especially high risk for flooding and property damage due to rapid runoff. Residents and visitors should be prepared for the closure of flood-prone roads and overflowing streams throughout the day.

The NWS has placed the Hawaii island summits of Mauna Kea and Mauna Loa under a winter storm warning until 6 p.m. today, with forecasters predicting more than 12 inches of snow and warning that “travel could be very difficult to impossible.”

At lower elevations, a high wind warning is in effect statewide as powerful northeast winds of 25 to 40 mph, with gusts up to 60 mph, tear across the islands. Officials warn that “damaging winds may blow down trees and power lines and damage roofs,” noting that travel remains hazardous for high-profile vehicles.

The coastline is equally dangerous, with a high surf warning active for the east shores of Kauai, Oahu, Molokai, Maui, Kahoolawe and Hawaii island through 6 a.m. Tuesday. Waves of 10 to 15 feet are creating powerful currents, and the NWS is advising the public to “stay away from the shoreline along the affected coasts.”

The Hawaii Department of Health has also issued a statewide brown water advisory for all beaches.

“DOH advises beach users to stay out of waters when the water appears brown or murky, especially following storms or heavy rain,” said the advisory. “After storms or heavy rain, the water may contain higher than normal pollutant levels.”

DOH recommends staying out of the water for 48-72 hours after the rain has stopped, and after the beach has received full sunshine.

Swimming, wading in, or drinking water from any freshwater stream or pond is also not advised to prevent leptospirosis.

Looking ahead, conditions are expected to gradually improve today, with conditions gradually improving this afternoon into tonight. A more typical tradewind pattern is forecast from Tuesday through Friday, though it will remain breezy with highs near 81 degrees and scattered showers for windward and mountain areas.