Sun. Jul 3rd, 2022

A large portion of Oahu was hit by up to 2 inches of rain per hour on Monday, and another area with heavy rain is set to move through in the coming hours, which could see rainfall reach up to 3 inches per hour.

“Rain events of this magnitude can cause catastrophic floods and affect areas that are not normally flooded,” according to the NWS.

Low spots are exposed to extreme runoff, which can clog bridges and culverts, exacerbating the already dangerous floods. Landslides are also expected.

Hawaii Governor David Ige declared state of emergency Monday because of the heavy rain, which he said was “expected to continue to cause flood damage to public and private property.”

The statement allows the use of funds “to support state and county efforts to provide rapid and effective relief from suffering, damage and loss caused by floods and other effects of heavy rains,” Ige said on Twitter.

The day-long rain event had already left some communities saturated.

Nene Cabin on the Big Island topped the list with 14.07 inches in 48 hours Monday night. Keaumo, also on the Big Island, recorded 13.64 inches and Kula on Maui got 12.95 inches.

While the rain creates potentially dangerous conditions, it can also help Hawaii recover from a drought.

More than half of the state, 56%, is below a certain level of drought, and half of Oahu was under severe drought per capita. November 30th. An updated drought report is expected in the coming days.

The threat of flooding comes days after parts of Hawaii were under a blizzard warning over the weekend. High winds and winter weather were seen on mountain tops on the Big Island, NWS said.

CNN’s Travis Caldwell and Kelly McCleary contributed to this report.

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