UPDATE – The Flood Advisory was discontinued overnight.

(BIVN) – The National Weather Service in Honolulu has issued a Flood Advisory for the windward side of Hawaiʻi Island, in effect until 12:30 a.m. HST.

“At 924 PM HST,” the National Weather Service stated, “radar indicated heavy rain near Pahoa. Weather spotter near Hilo and Keaau reported thunderstorm. Rain was falling at a rate of one and a quarter inches per hour.”

Forecasters say locations in the advisory include but are not limited to Hilo, Hawaiian Acres, Orchidlands Estates, Glenwood, Keaʻau, Hawaiʻi Volcanoes National Park, Hawaiian Paradise Park, Pāhoa and Honomū.

“An area of tropical moisture is spreading over the Big Island this evening, under the trade winds,” the National Weather Service wrote in a Friday evening discussion. “Latest radar data indicated some embedded cells with cloud tops over 30k feet. Thus expect localized heavy rainfall, as well as a slight chance of thunderstorms to affect windward Big Island through rest of the evening into early Saturday. The moisture is advancing west and will spread to rest of the Big Island overnight into Saturday. Coupled with daytime heating, expect unsettled weather to affect the Big Island on Saturday, with a slight chance of thunderstorms over the lee and southern portions of that island.”