Flash Flood Warning Issued for Windward Big Island in Hawaii

The National Weather Service in Honolulu has issued a Flash Flood Warning for windward areas of Hawaii's Big Island, in effect until 7:00 PM HST on October 29.

At 5:44 PM HST, Doppler radar indicated heavy rain and isolated thunderstorms across windward Big Island. Precipitation was falling at a rate of 1 to 2 inches per hour, with the heaviest rainfall concentrated over the Hilo districts. Flash flooding is ongoing, though weather conditions are expected to gradually improve over the next hour.

Locations affected by the warning include Hilo, Hawaiian Paradise Park, Kapaau, Honokaa, Honomu, Papaikou, Pepeekeo, Hakalau, Ninole, Laupahoehoe, Mountain View, and Glenwood.

The National Weather Service reports hazards involving flash flooding in small creeks, streams, urban areas, highways, streets, underpasses, and other low-lying or poor-drainage locations.

Why it is dangerous and what to do

⚠️ Safety

• Do not drive on flooded roads, as most flood deaths occur in vehicles.

• Turn around, don't drown if you encounter flooded roadways.

• Remain aware of your surroundings in low-lying and poor drainage areas.

📊 The numbers, from wweather1 data

Hilo: now +23°, Overcast.

The record for this date is +28° (2023).

Three-day forecast: 30 October: +26°/+22° · 31 October: +25°/+22° · 1 November: +24°/+22°

The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

Flash Flood Warning Issued for Windward Big Island in Hawaii

Why it is dangerous and what to do

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