Immediate

Responsive action SHOULD be taken immediately

Flash Flood Warning Hawaii | Effective 03/21/2026 05:45

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for...<br /> The island of Oahu in Honolulu County * Until 600 AM HST. * At 245 AM HST, emergency management reported closed roads on the<br /> windward side of the island due to Friday's flooding. Latest radar<br /> depicts light showers, however additional bands of moderate to<br /> potentially locally heavy showers may move in from the south<br /> during the early morning hours.

Flash Flood Warning Hawaii | Effective 03/21/2026 04:56

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for...<br /> The island of Oahu in Honolulu County * Until 500 AM HST. * At 156 AM HST, emergency management reported numerous closed roads<br /> due to flooding. While the latest radar shows a significant<br /> decrease in shower coverage and intensity, return showers are<br /> expected into the early morning hours. The Wahiawa Reservoir<br />

Flood Warning Washington | Effective 03/21/2026 04:10

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Warning continues for the following rivers in<br /> Washington... Nooksack River At Ferndale affecting Whatcom County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Nooksack River at Ferndale. * WHEN...Until just after midnight tonight. * IMPACTS...At 18.0 feet, the river begins overtopping its banks<br /> within the City of Ferndale flooding low-lying areas within the<br />

Flash Flood Warning Hawaii | Effective 03/21/2026 02:52

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for...<br /> The island of Oahu in Honolulu County * Until 300 AM HST. * At 1152 PM HST, emergency management reported closed roads on the<br /> windward side of the island due to flooding. Latest radar only<br /> depicts light showers, however additional bands of moderate to<br /> potentially locally heavy showers may move in from the south<br /> during the early morning hours.

Flash Flood Warning Severe Hawaii | Effective 03-21-2026 02:34

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> FFWHFO The National Weather Service in Honolulu has issued a * Flash Flood Warning for...<br /> The island of Molokai in Maui County * Until 230 AM HST. * At 1134 PM HST, A line of heavy showers with embedded<br /> thunderstorms moving in from the west is producing rainfall rates<br /> of 1 to 3 inches per hour. Reports of flooding, downed trees, and<br /> landslides have already been received from emergency management<br />

Flash Flood Warning Hawaii | Effective 03/21/2026 02:34

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> FFWHFO The National Weather Service in Honolulu has issued a * Flash Flood Warning for...<br /> The island of Molokai in Maui County * Until 230 AM HST. * At 1134 PM HST, A line of heavy showers with embedded<br /> thunderstorms moving in from the west is producing rainfall rates<br /> of 1 to 3 inches per hour. Reports of flooding, downed trees, and<br /> landslides have already been received from emergency management<br />

Flood Warning Washington | Effective 03/21/2026 01:29

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Warning continues for the following rivers in<br /> Washington... Skykomish River Near Gold Bar affecting Snohomish County. * WHAT...Minor flooding is occurring. * WHERE...Skykomish River near Gold Bar. * WHEN...Until this afternoon. * IMPACTS...At 15.0 feet, the Skykomish River will cause minor<br /> flooding of low pasture lands and low lying roads...including<br /> Index-Galena Rd and Tualco Loop Rd. A stage of 15 feet on the<br />

Flash Flood Warning Hawaii | Effective 03/21/2026 01:38

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for...<br /> The island of Oahu in Honolulu County * Until 200 AM HST. * At 1038 PM HST, emergency management reported numerous closed<br /> roads due to flooding. While the latest radar shows a significant<br /> decrease in shower coverage and intensity, return showers are<br /> expected into the early morning hours. The Wahiawa Reservoir<br />

Flood Warning Washington | Effective 03/21/2026 01:39

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Warning continues for the following rivers in<br /> Washington... Snohomish River Near Monroe affecting Snohomish County. Snohomish River At Snohomish affecting Snohomish County. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Snohomish River near Monroe. * WHEN...Until late tonight. * IMPACTS...At 17.0 feet, the Snohomish River will cause major<br /> flooding...inundating farm land...roads...and some residential<br />
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