A strong cold front is pushing through a tropical moisture rich environment and producing heavy showers and isolated storms in Hawaii Tuesday. This heavy rain is leading to flash flooding across Maui County and the Big Island through Tuesday night. The cold front will likely stall out near the Big Island Tuesday night and should produce at least some light rain into Wednesday.
— NWSHonolulu (@NWSHonolulu) October 24, 2017
Heavy Rain Set-Up
Cool and dry air will move in behind this cold front for the end of the week and into the start of the weekend.
The threat of heavy rain and flooding will be mainly over the Big Island through Tuesday night. Rainfall totals should range from 2 to 4 inches with some isolated areas seeing over 5 inches overall. The heavy rainfall rates could lead to some areas of flooding through Tuesday evening.
Another cold front could push into the islands by early next week and bring some more rain to the forecast.