WEATHER ALERT: Flash Flood Warning for Oahu in Honolulu County, HI

BULLETIN – EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
900 PM HST Fri Mar 13 2026

The National Weather Service in Honolulu has extended the

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

* Until 1230 AM HST.

* At 900 PM HST, radar indicated heavy rainfall over Oahu. Rain was
falling at a rate of around 2 inches per hour over already
saturated ground. Additionally, Emergency Management reports
ongoing flooding issues across the island. Flash flooding is
expected to continue.

HAZARD…Flash flooding caused by heavy rain.

SOURCE…Emergency management.

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…
The entire island of Oahu.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

Excessive runoff from heavy rainfall will cause flooding of drainage
ditches and streams, streets, highways, properties, and other low
lying spots.

&&

This warning may need to be extended beyond 1230 AM HST if flooding
persists.

LAT…LON 2125 15769 2125 15772 2127 15773 2124 15782
2130 15790 2129 15811 2136 15815 2148 15824
2153 15825 2158 15829 2160 15813 2169 15805
2173 15798 2155 15783 2147 15783 2143 15779
2147 15779 2147 15772 2141 15773 2131 15764

FLASH FLOOD…OBSERVED

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