Flash flooding caused by excessive rainfall is possible.
WHERE
All Hawaiian Islands.
WHEN
Through Friday afternoon.
IMPACTS
Significant flooding may occur due to excessive rainfall and overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain.
ADDITIONAL DETAILS
- Low pressure developing west of the islands will draw abundant moisture northward as it strengthens during the next couple of days. This will bring potential for heavy rain and thunderstorms leading to flash flooding over all Hawaiian islands.
Recommendations
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Tue 7:40 PM → Thu 6:00 AM HST
WHAT
Large breaking waves of 7 to 10 feet with occasional higher sets to 12 feet.
WHERE
South facing shores of Niihau, Kauai, Oahu, Molokai, Maui, Lanai, Kahoolawe, and the Big Island.
WHEN
Until 6 AM HST Thursday.
IMPACTS
Moderate. Strong breaking waves and strong currents will make swimming dangerous.
Recommendations
Heed all advice from ocean safety officials. When in doubt, don't go out.
