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Winter Storm Alerts are in effect for the PNW into Monday afternoon. Early morning travelers encountered slippery road conditions in Tri-Cities and beyond.

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I-90 near the Snoqualmie Pass Summit was closed for a while due to multiple spin-outs and collisions.

According to our News partners at NBC Right Now, Tri-Cities could see up to 3 inches of accumulation. A Winter Weather Advisory is in effect till 3 pm. The areas include the Foothills of the Blue Mountains, Yakima Valley, And Lower Columbia Basin of Washington.

A Winter Storm Warning remains in effect for the passes and Eastern slopes with up to 5 inches accumulation possible. For the Blue Mountains, delays and closures are predicted above 3,000 feet, as 3-6 inches are possible. The Winter Storm Warning is in effect till 7 pm. If you plan to travel, you're advised to expect delays and have chains.

Now that we've had our first measurable snow, WSP Trooper Chris Thorson reminds motorists to exercise caution on bridges and overpasses:

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