First alert forecast: Flood watch issued for Kauai, Oahu ahead of heavy rain and isolated thunderstorms

Drew Davis on Instagram: "FIRST ALERT: An active weather pattern is expected this Sunday and Monday. A cold front could bring an increased chance for heavy rain and scattered thunderstorms. Meteorologist Drew Davis (@drewdaviswx) has a look at the hour-by-hour forecast and how the rain could impact the Honolulu Marathon on Sunday. Note: The Molokai NOAA Radar is currently down, and will not be in working order for this rainfall event. Crucial radar data will be missing during the storm. [POSTED