Weather Outlook: Atmospheric River Event Expected This Weekend. Flooding Possible

Weatheralertrain

An Atmospheric River event with significant rain is expected this weekend

We have been talking about this developing storm in our breaking news app for a couple of days now. A strong rain storm (Atmospheric River) that has tapped moisture from the Hawaii area is expected to arrive in our area on Saturday. The rain is expected to continue into Monday with several inches expected along the coast and around 1/2 to an inch of rain expected in the Klamath Falls area. Areas of flooding are possible and rivers are expected to rise. The heaviest rain is expected Saturday into Monday. The weather service will be watching for potential land slides and other hazards as we get closer to the weekend.

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Above: A forecast model showing an AR event with moisture from Hawaii streaming into our area. 

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Above: A storm timeline as we head into the weekend. 

From the NWS Medford:

An active and wet spring weather pattern continues. One front will approach the forecast area this afternoon and move through on Friday, bringing with it moderate rain and windy conditions to portions of the forecast area.

A brief break in the steady precipitation is expected Friday night into Saturday morning. Then, an atmospheric river (AR) will take aim on the forecast area, and the source of the moisture is near Hawaii, so it will feature heavy rain and snow levels above 7000 feet. Snowmelt and increased runoff will result in significant rises to area rivers, streams, and creeks. Models have trended stronger with this AR, so small stream and urban flooding is likely, and main stem river flooding is possible.

 

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