Mountain Weather Forecast

Time and Day: 9:30 Sunday

The Snapshot: Dry Sunday morning with moderate snow moving in Sunday afternoon.

The Science: Sunday will start out dry as a short-lived high pressure ridge moves over Washington. There are currently high clouds in advance of an approaching front. The warm front should reach Stevens Pass Sunday afternoon, with the trailing cold front and cooler airmass moving in overnight. Light snow should begin Sunday afternoon and continue into Monday.

There will be a brief break from precipitation Monday before westerly flow increases and brings moisture and more light snow to the Cascades Monday afternoon and Tuesday.

The Long Range: A warm and wet system looks to arrive Tuesday night and Wednesday. Freezing levels look to be around 5000-6000’ with a decent shot of moisture. There is cooling and hopefully a return to snow on Thursday, with high pressure building by the end of the week.

24hr Precipitation ending at 4am: Today 24hr water = .5  snow = 3-5” Tomorrow’s 24hr water = .25-.5  snow = 2-4” Trend and Timing: Light to moderate snow beginning Sunday afternoon, a brief break Monday morning, moderate snow showers resuming Monday afternoon.

24hr temperature ending at 4am:  Low: 25    High: 33 Freezing level: 3500-4000’ Trend and Timing:    Temperatures will bump up with daytime warming as has been the pattern. Snow levels should remain at Pass level.

24hr Winds (mph) ending at 4am: Base: E 0-5 then W 5-10 Ridge Top: E 5-10 then WSW 10-15 Trend and Timing: East winds during the day Sunday will switch to WSW as the front crosses Sunday afternoon.