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Flash Flood Warning
Issued: 10:34 PM Feb. 21, 2026 – National Weather Service
The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
The island of Oahu in Honolulu County

* Until 215 PM HST.

* At 1233 PM HST, radar and automated rain gauges indicates heavy
rain falling over portions of Windward Oahu. Rain is falling at a
rate of 1 to 1.5 inches per hour. Recent observations indicate
that organized widespread heavy rainfall has come to an end and
heavy rain will become increasingly localized during the next 1 to
2 hours.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar and automated gauges.

IMPACT...Flooding in drainages, streams, rivers, roads,
properties, and other low-lying areas. Public road
closures possible in some areas. Landslides are
possible in steep terrain.

* Some locations that will experience flash flooding include...
Waikane, Waiahole, Kaaawa, Punaluu, Kahaluu, Hauula, Ahuimanu,
Wahiawa, Mililani, Laie, Kahuku, Kaneohe, Kaneohe Marine Base,
Kalihi, Maunawili, Haleiwa, Kailua, Manoa, Palolo and Waimanalo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay away from streams, rivers, drainage ditches, and culverts, even
if they are currently dry.

&&

This warning may need to be extended beyond 215 PM HST if flooding;
persists.;


FLASH FLOOD...RADAR AND GAUGE INDICATED

Flood Watch
Issued: 11:37 AM Feb. 21, 2026 – National Weather Service
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Oahu.

* WHEN...Through this 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...
- An upper level trough swinging through the northwestern
islands today will produce periods of heavy showers and
isolated thunderstorms. The trough axis should lift north of
the area later this afternoon, which should diminish the
flooding threat.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

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