Hawaii Weather Forecast: Red Flag Warning in Effect For Extreme Fire Weather Conditions

Strong trade winds and low humidity increase the likelihood of extreme fire weather conditions, therefore a Red Flag Warning is in effect for the majority of Hawaii until Monday.

Red Flag Warning until Monday

A red flag warning is active from Sunday to 6 PM Monday for the leeward regions of all Hawaiian Islands and Central Oahu due to strong trade winds and low humidity, as reported by the National Weather Service in Honolulu. In Kauai, this warning affects areas like Koloa, Poipu, and Mahaulepu on the south shore.

A red flag warning signifies critical fire weather conditions, either present or imminent. Forecasters indicate that robust trade winds and low relative humidity, in combination with dry fuels, will create critical fire weather conditions from late morning today until Monday afternoon. Peak winds are anticipated on Monday, with humidity levels as low as 40%.

This combination of strong winds, low humidity, and dry fuels will heighten the risk of extreme fire behavior, causing fires to spread quickly and become challenging to control. It's crucial to note that a Red Flag Warning doesn't predict new fire starts, but outdoor burning is strongly discouraged.

Additionally, heat from vehicle exhaust systems can ignite dry grass, so parking in these areas should be avoided. High winds increase fire hazards, so activities that could generate sparks should be postponed until the winds subside. Stay safe and exercise caution during this warning period.

Wind Advisory

A wind advisory is active for Hawaii Island, Maui, Lanai, and Kahoolawe from noon today to 6 PM Monday. Strong high-pressure north of the islands will bring windy trades through Monday, peaking tonight and Monday. Expect east winds of 20 to 30 mph with gusts over 50 mph, especially near mountains and valleys. These strong winds can knock down branches, and tents, and make driving difficult, particularly in high-profile vehicles. Be cautious of falling branches, secure tents, and prepare for potential power outages.

Red Flag Warning Ends for Kauai and Niihau

The red flag warning is lifted for Kauai and Niihau, but it persists for the rest of the state. Conditions improved with increasing moisture from a north-approaching front, and Oahu may follow suit on Monday if the moisture reaches south.

Sunday Fire Incidents in Hawaii

On Sunday, Oahu experienced multiple fire incidents. A brush fire erupted in Haleiwa around 1:24 PM, causing temporary road closures that have since reopened. Firefighters contained the blaze by 3:32 PM after scorching approximately two acres and nearing structures.

Around noon, HFD responded to a wildfire on Waihee Road, situated at the base of the Koolau Mountains with challenging terrain for ground firefighting, prompting water drops from HFD helicopters.

Additionally, firefighters continued their days-long battle against the Mililani Mauka fire. No homes were threatened, and evacuations were unnecessary. Hawaii's Emergency Management Agency partially activated the EOC and called in aircraft and the National Guard to aid the firefighting efforts.

Emergency managers in all counties are prepared for the increased wildfire risk due to rising winds and low humidity.