Headline:
Flood Watch issued August 21 at 2:45PM HST until August 24 at 6:00PM HST by NWS Honolulu HI
Event:
Flood Watch
Urgency:
Future
Effective:
August 21, 2026 - 5:45pm
Expires:
August 22, 2026 - 9:15pm
Description:
Tropical Storm Moke will bring areas of heavy rain to portions of
the Big Island late Saturday night through Monday afternoon.
* WHAT...Flash flooding caused by excessive rainfall is possible for
windward and southeast Big Island.
* WHERE...The Big Island.
* WHEN...From late Saturday night through Monday afternoon.
* IMPACTS...Flood prone roads and other low lying areas may be closed
due to elevated runoff and overflowing streams. Urban areas may
receive more significant flooding and property damage due to rapid
runoff.
* ADDITIONAL DETAILS...
- Tropical Storm Moke is forecast to bring periods of heavy rain to
the Big Island from late Saturday night through Monday afternoon.
Rainfall totals of 5 to 10 inches, locally up to 15 inches, are
possible over the windward and southeast slopes of the Big
Island. It will not take a significant amount of rain to cause
flash flooding due to saturated grounds from recent heavy rain.
Instruction:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Area Description:
Kona; Kohala; Big Island Interior; Big Island Summit; Big Island South; Big Island Southeast; Big Island East; Big Island North
Forcast Office:
NWS Honolulu HI
Sender:
w-nws.webmaster@noaa.gov