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Elev 56 ft, 21.34 °N, 157.7 °W

Waimanalo, HI Severe Weather Alertstar_ratehome

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Personal Weather Station
Location: Waimanalo, HI
Elevation: 56ft
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Active Weather Alerts

Flood Advisory
Issued: 3:35 AM Apr. 13, 2026 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 845 PM HST THIS EVENING FOR THE
ISLAND OF OAHU IN HONOLULU COUNTY...

* WHAT...Flooding caused by excessive rainfall.

* WHERE...The island of Oahu in Honolulu County.

* WHEN...Until 845 PM HST.

* IMPACTS...Minor flooding on roads, poor drainage areas, and in
streams.

* ADDITIONAL DETAILS...
- At 531 PM HST, radar indicated light to moderate rain falling
at a rate of up to 0.5 inch per hour over Oahu. Expected
continued light to moderate rainfall into the evening, and
even low rain rates can produce ponding due to saturated
conditions.
- Some locations that will experience flooding include...
the entire island of Oahu.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay away from streams, drainage ditches and low lying areas prone
to flooding.

A Flood Watch is also in effect.

&&

This advisory may need to be extended beyond 845 PM HST if flooding;
persists.



Flood Watch
Issued: 1:00 AM Apr. 13, 2026 – National Weather Service
* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Kauai, Oahu, Maui, Molokai, Lanai, Kahoolawe, and Niihau.

* WHEN...Through 6 AM HST Monday morning.

* 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...
- Rain continues as deep tropical moisture remains in place
over the area. Although rain rates have been generally light,
there remains potential for an increase in rates overnight.
In addition, heavy showers have developed over Maui County.
Overall, the threat for flash flooding is diminishing.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

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