Dangerous flooding is impacting Hawaii’s Oahu island, prompting evacuations and a warning from local officials of a possible dam collapse, as major rains pummel the area for the second major rain event in a week.
An evacuation order was issued early Friday morning local time for Haleiwa and Waialua, including areas near the Wahiawa Dam, according to Oahu Emergency Management, which warned that the dam “may collapse or breach at any time.”
Hawaii is seen via satellite, March 20, 2026.
NOAA
“Potential for life-threatening flooding and catastrophic amounts of fast-moving water in downstream areas,” the agency said.
Hawaii Gov. Josh Green said the Hawaii National Guard has been activated and other resources are being deployed across Oahu amid the “severe storm.”
“We are coordinating closely with state and county partners to support evacuations, open shelters, and keep our communities safe,” he said on X.
The National Weather Service in Honolulu has issued a flash flood warning after dam failure on the Kaukonahua Stream below Wahiawa Dam on Oahu, Hawaii, March 20, 2026.
City and County of Honolulu Department of Emergency Management
This is a developing story. Please check back for updates.
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