Mountain Weather Forecast

Time and Day: 0700 Sunday

The Snapshot: Light snow today and tomorrow with sun breaks and seasonal temperatures.

The Science

Current Observations:  A light dusting of snow overnight, 26 degrees in the base area and 22 at the upper weather stations. Skies are partly cloudy and winds are light from the west. Barometric pressure is relatively high and basically flat for the last 12 hours, representing our stable position between two low pressure systems.

The Forecast: A low pressure center in Canada will continue to spin light bands of moisture in weak WNW upper level flow towards Washington. A weak shortwave of low pressure transits the forecast area Sunday night for elevated chances of snow showers. Amounts look light at any rate. Temperatures remain cool with daytime warming becoming pronounced this time of year. Lingering snow showers continue Monday with clearing skies as weak high pressure builds.  

The Long Range: Tuesday should be dry and mostly sunny under a brief high pressure ridge. A cutoff low that is currently parked off the California coast will begin to move inland on Wednesday, bringing higher freezing levels and moisture on Thursday. Currently this is looking like a snow event for Stevens Pass, with most of the action happening Thursday and Thursday night.

24hr values daily 4am to 4am.

Precipitation: Sunday’s   24hr water:  .25   snow: 1-3” Monday’s   24hr water: .10    snow: 1-2” Trend and Timing: Light snow Sunday, best chance Sunday night. Very light passing showers Monday.

Temperature: Low: 22    High: 30 Snow level: 1500’ Trend and Timing:     Typical late winter daytime warming, cooling nicely overnight.

Winds Base: W 5-10 Ridge Top: W-SW 15-20 Trend and Timing: Winds should be light most of Sunday, increasing Sunday night.