Flash Flood Watch
Flash Flood Watch
Alert:
…FLASH FLOOD WATCH FOR ALL HAWAIIAN ISLANDS…
…FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
LATE THURSDAY NIGHT…
The Flash Flood Watch continues for
- Kahoolawe, Kauai, Lanai, Maui, Molokai, Niihau, Oahu and the
Big Island. - From this evening through late Thursday night
- Moisture from Tropical Storm Olivia is expected to move over the
state starting this evening. Intense rainfall will be possible,
especially along the east-facing slopes. Olivia is forecast to
produce total rainfall amounts of 10 to 15 inches. Isolated
maximum amounts of 20 inches may occur along the windward
sections of Maui County and the Big Island. - Rain events of this size can cause widespread flooding and can
affect areas that do not usually flood. Low spots in roads
will become dangerous and impassable due to severe runoff.
Debris in streams and gulches may clog bridges and culverts
resulting in dangerous flooding. Numerous landslides are
expected, especially along the Hana Highway on Maui and the
Mamalahoa Highway on the Big Island.
Instructions: A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is LIFE THREATENING. Do not cross fast flowing water in your vehicle or on foot. Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. If you experience heavy rain or rising water, head to higher ground immediately.
Target Area:
Big Island Interior
Big Island North and East
