Warm, Then Another Cold Blast

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Justin’s Monday Night Forecast Discussion: 

Nice to see a little bump back in the temperatures today and we’ll hang onto that warmer, mild air tomorrow. A ridge of high pressure set up offshore is funneling some warmer air into the Northwest. Lows won’t drop much below the mid 40s tonight and we’ll rebound back into the mid 50s for tomorrow. Cloudy with a slight chance for some isolated showers heading over top of the ridge, but that’s it. Shower chances are greater up north into Washington and along the NW coastline.

It all changes Wednesday as a strong cold front slams through bringing rain and mountain snow. A well of cold air from Alaska spills in behind the front so I’m expecting highs to start in the mid 40s at midnight and see temps fall into the upper to mid 30s by late Wednesday afternoon. Snow levels will also drop quickly from 6000 feet to 1500 feet by early Thursday. They’ll stay that low throughout the rest of the week.  Smaller disturbances roll in with the cold air so expect up to a foot or more snow at the Passes and above. With low snow levels, any shower that turns heavy Wed. night through Friday may pull snow lines down to the valley floor at times. We’re not looking at accumulating snow but snow bursts and a light dusting overnights are not out of the question. Highs will also struggle to get out of the 30s by week’s end.

The weekend looks fairly quiet with a slight chance for some showers both Saturday and Sunday but a slight bump in the temps back into the low to mid 40s. We’ll keep watching the snow levels and let you know what the possibility will be for valley snow this week!

Have a great Tuesday!

Chief Meteorologist Justin Stapleton

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