The National Weather Service in Honolulu has issued a red flag brush fire warning for the leeward portions of all Hawaiian islands though Monday evening.

”Provided the lack of any significant rainfall through the summer months, fuels have become very dry across portions of the state,” forecasters said in the warning issued Sunday. “These dry conditions combined with breezy trades and relative humidities dipping below 45 percent through the afternoon hours will support extreme fire behavior through Monday,”

The forecast calls for trade winds of 20 to 25 mph with gusts up to 35 mph.

Weather service forecasters said that any fires that develop will likely spread rapidly, and that outdoor burning is not recommended.

A red flag warning means that critical fire weather conditions are either occurring now or will shortly, officials said. The combination of strong winds, low humidity, and heat can contribute to extreme fire behavior, they said.

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For updates, call (808) 245-6001 or go to the NWS website.