Hurricane Lane is powering towards the islands of Oahu and Kauai as major businesses close and residents flee to safety.
So far, Hurricane Lane has triggered severe flash flooding for much of Big Island, and mudslides have cascaded over roads.
As Hurricane Lane drives towards the furthest islands, government officials have warned to prepare for the worst, and shelters have been readied.
Hawaii Civil Defence warns that extreme caution should be exercised if people are intending to travel towards shelter at this time.
Which schools and businesses are closed?
Hurricane Lane is still looming over the Pacific Ocean, currently situated 180 miles (290 km) southeast of Kailua-Kona.
The Hawaii Police department has warned that due to more than a foot (30 cm) of rain and landslides, a number of streets closed until further notice.
Lane is still a powerful category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale, and although weakening is forecast, the storm will cause damage with tropical and hurricane winds.
Hurricane-force winds extend out up to 35 miles (55 km) from the centre and tropical-storm-force winds extend outward up to 125 miles, impacting each Hawaiian island, resulting in a chain of closures.
Here is a full list of what is closed right now:
Schools
All public schools and public charter schools in Hawaii will be closed through Friday.
Kamehameha Schools-Kapalama will be closed until further notice.
Thursday and Friday will see private schools and childcare closed on Oahu, Maui, and the Big Island. Anyone unsure about whether their schools are closed should check with administration.
All University of Hawaii campuses on Oahu and Kauai are closed, and UH campuses on the Big Island, Maui and Molokai are closed until further notice.
After school and public sporting events are all closed until further notice.
County, State, National Parks
Every state office in Hawaii will be closed until further notice, and non-essential employees have been told to not to go to work.
All state parks with the exception of those on Kauai have been closed from Thursday.
All tours to USS Arizona Memorial are suspended.
Memorials and the Pearl Harbour visitor centre have been closed from Wednesday.
On Hawaii Island all beach parks from South Point north to Kohala have been closed until further notice.
TheBus has run regularly until 5am BST (6pm local time), and is now running routes to evacuation centres.
All public libraries on the Big Island, Maui, Oahu and Kauai Counties are closed Thursday and Friday.
Shops and businesses
Hawaiian Airlines and other airlines like United Air and Delta is offering waivers for travellers who want to change their flight reservations.
United Airlines has canceled all flights into and out of Kahului on Friday.
Young Brothers has canceled sailings out of Honolulu until Saturday.
A handful of Hawaii Island closures are in effect as of Thursday night.
Maui County, Hawaii Island courts.
Henry Kapono and Friends concert at the Waikiki Shell is rescheduled to September 15.
Big Island food show at Mauna Lani Bay Resort is cancelled.