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Tuesday, April 23, 2024

Northwest Braces for Heavy Rainfall from Powerful Atmospheric River

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Get ready, Northwest! Another powerful ⁣atmospheric river is‌ on⁢ its way to bring heavy rain and‌ increase the flood threat⁣ in the region. This⁢ latest storm is expected to​ dump over‍ half ‌a foot ⁣of rain ‌on the ​already-soaked​ area, posing a ⁢significant flood risk.

With each new atmospheric river,‌ the flood risk continues ⁢to ⁤escalate,⁤ and this upcoming event is ⁤no exception. The Northwest is bracing ⁢for several‌ inches of rain and ⁢feet of snow, with ⁤warmer air expected ‍to drench even high, snow-covered elevations, further‍ intensifying the flood threat.

Flood watches have been‌ issued ‌for over 10 million people across the Northwest, as heavy rain is set to⁤ target portions of Washington, Oregon, ​Northern ​California, and Idaho through Wednesday. A Level 3 moderate risk​ of excessive ‌rainfall has​ also ‍been declared in northwestern Washington.

Atmospheric ​rivers are the hallmark type ‍of‍ winter storm‌ for the Northwest, directing tropical moisture from the Pacific straight to the West Coast ⁤in the form of heavy rain and snow.

This ⁤week’s event is ⁣considered a Level 4 out ‍of 5, or “extreme,” atmospheric river for ⁣much of the Oregon ⁤coastline​ and ⁣a Level 3 out of 5 “strong” event‌ for the ⁣Washington coast.

The heaviest rainfall is expected to begin Monday evening from coastal Washington and‍ Oregon into the Cascade mountains. Parts of the Cascades‍ that​ were buried ‌in snow over the weekend may record ⁤more than a foot of rain from ⁢late ⁤Monday through Wednesday.

Outside⁣ of the mountains,⁣ rainfall amounts in western ⁢Washington​ and western Oregon could ⁢climb into the‌ 3- to 6-inch range this ‍week.

This amount⁤ of⁣ rain, falling so soon after ‍the area was deluged with rain and snow ‍over the weekend, will significantly impact the ⁣region. The ground’s ability to absorb more ‌water has been reduced, raising ‍the flood risk even further.

The first atmospheric river of this multi-day ​event ⁣unloaded more than four inches of rain from Saturday to Sunday on ⁣parts of Washington, ‌Oregon, and California,⁤ further saturating the ground.

Rainfall​ melts⁣ snow, and that melted snow will then flow⁤ into streams⁤ and rivers, causing even higher⁤ rises on‌ rivers or flooding low-lying areas.

As a result, some rivers in western ⁤Washington are forecast to reach moderate and major flood‌ stage this⁤ week. The Skagit and Snoqualmie rivers are of particular concern, with both forecast to flood roads, farms, and even some ‌residential areas in spots.

Heavy rainfall pouring ⁢down ⁣on deep snow in‌ the⁤ mountains⁣ also‍ poses⁣ the risk of avalanches, with an avalanche warning already in ⁢place for portions of Washington and Oregon.

Furthermore, heavy rainfall may trigger landslides ‌or debris flows in⁤ areas burned by wildfires, ⁣as the⁣ ground is less able to absorb it effectively.

By Thursday and Friday, storm activity is forecast to scale back across much of the‌ Northwest, but showers and some high-elevation snow remain possible.

And if that’s‌ not enough, there are early signs in forecast computer⁤ models ​of yet another​ atmospheric river hitting the region by ‌the early weekend. ​The exact strength and overall impact of this⁢ potential event should become clearer ⁣once this ⁢week’s atmospheric ⁢river ​comes to an ⁤end on⁣ Wednesday.

Stay safe⁤ and stay informed as the Northwest braces for another round of heavy ​rain and ‌potential flooding!

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Truth Media Network
Truth Media Network
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3 COMMENTS

  1. Disagree. Heavy rainfall can lead to flooding and other damage, making it a cause for concern for those in the Northwest region.

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