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19.71 °N, 155.08 °W

Hilo, HI Severe Weather Alertstar_ratehome

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Location: Hilo, HI
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Active Weather Alerts

Flood Watch
Issued: 1:53 PM Mar. 21, 2026 – National Weather Service
* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...The island of Oahu, Molokai, Lanai, Kahoolawe, Maui, and
the Big Island.

* WHEN...Through Sunday afternoon.

* IMPACTS...Significant flooding may occur due to the 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...
- A kona low developing west of the islands will draw abundant
moisture northward as it strengthens and eventually departs
to north early next week. Several rounds of moderate to heavy
rainfall are anticipated. The heaviest rain is expected to
last through tonight, except for the Big Island where the
heaviest rain is expected on Sunday.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

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