The National Weather Service in Honolulu has issued a Flash Flood Watch for the entire State of Hawaii until Wednesday night or later. This watch includes the County of Hawaii.
An upper level trough will strengthen as it digs toward the islands during the next couple of days. While isolated heavy showers could develop over all islands, the main short term threat for heavy flooding rainfall will be along a band of moisture currently stalled over Maui and northern Big Island.
A mix of deep tropical moisture and an unstable air mass will result in potential for very heavy showers and even severe thunderstorms across the entire State of Hawaii through Thursday. Rain fall rate from heavier down pours and thunderstorms could cause streams to abruptly overflow and lead to flash flooding for low lying areas, stream mouths, and shoreline discharge flow lines.
Take all necessary precautions as flash floods happen with little to no warning. Continue to monitor your local news stations for weather updates and have a reliable way to get warnings for your location. Be prepared to take immediate action should the watch be upgraded to a Warning.
State Civil Defense strongly advises hikers, campers, and beach goers to reschedule their outings to a time when weather conditions improve and become more favorable. If in doubt, don’t go out.
Flash flooding can also cause a Brown Water Advisory at local beaches and streams due to possible contamination in the water from flash flooding. Bio hazardous materials such as: Chemicals, fecal matter, natural and man made debris can impact your health and well being. Please listen to your ocean safety officers, park rangers, and law enforcement officers advisories to stay out for your own safety due to the flash flooding.
Please stay with BIGISLANDWatch.com as new weather updates come into our news room.