April 21, 2026
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Red Flag Warning

7/31/2025 08:31 HST through 8/1/2025 18:00 HST

Red Flag Warning issued July 31 at 8:31AM HST until August 1 at 6:00PM HST by NWS Honolulu HI
…RED FLAG WARNING IN EFFECT THROUGH FRIDAY AFTERNOON FOR GUSTY WINDS AND LOW HUMIDITY… .A dry and locally windy trade wind flow will develop today and will produce critical fire weather conditions through at least Friday and possibly into Saturday. Winds will be strongest over and downwind of terrain. The National Weather Service in Honolulu has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 6 PM HST Friday. * AFFECTED AREA…Leeward portions of all Hawaiian Islands and interior sections of the Big Island. * TIMING…Until 6 PM HST Friday. * WINDS…East 15 to 30 mph with gusts up to 40 mph on Oahu and Kauai and gusts up to 50 mph on Maui County and Big Island. * RELATIVE HUMIDITY…Lowering to 35 to 45 percent each afternoon. * IMPACTS…A combination of strong winds, low relative humidity, and dry fuels can contribute to extreme fire behavior. Any fires that develop will likely spread rapidly. A Red Flag Warning does not predict new fire starts.

Instructions

Outdoor burning is not recommended. Heat from vehicle exhaust systems can ignite dry grass. Park cars on areas that are paved or where vegetation is trimmed and cleared. High winds contribute to wildfire hazard. Delay activities that could throw off sparks until the wind dies down. A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Red Flag Warning does not predict new fire starts.

Sent
7/31/2025 08:31 HST

Niihau; Kauai South; Kauai Southwest; East Honolulu; Honolulu Metro; Ewa Plain; Waianae Coast; Oahu North Shore; Central Oahu; Waianae Mountains; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Lanai Mauka; Kahoolawe; Maui Leeward West; Maui Central Valley North; Maui Central Valley South; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Kohala; Big Island Interior

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