0930 Tuesday

The Snapshot:  Snow, with periods of mixed rain expected today and tomorrow.   Snow tomorrow night.

The Science: A weak surface low pressure system approaching the coast will spin bands of moisture into the mountains for the next few days.  Warm air aloft fighting with coldeasterly flow will make for an interesting mix of precipitation.   A more organized cold front arrives tomorrow night for a better chance of measurable snow for Thursday morning.

 

4-7day Long Range:  A steady stream of moisture will keep pumping through the region well into the weekend.  Freezing levels will continue to fluctuate between 3500’ and 4500’ through early Friday. 

Things get mighty interesting on Friday as a sub-tropical system with high freezing levels and heavy precipitation begins to take shape. 

Precipitation: Water by 4am = .25   Snow equivalent = 2-4   24hr total inches of water ending at noon tomorrow = .5 24hr total inches of snow ending at noon tomorrow = 2-5   Trend and Timing: Mixed rain and snow below Hogsback with snow on the upper mountain today and tomorrow.

Base Temp and Freezing levels:  Low: 28    High: 34 Freezing level: +- 4000’     Trends and Timing Freezing levels will hover near 4000’ through noon tomorrow.  Cool easterly flow will keep surface temperatures just below freezing while the warmer temperature inversion continues through tomorrow.

Winds (mph) Base: 0-5 E shifting W Ridge Top: 0-5 S shifting WSW   Trend and Timing: East flow at the surface will continue through early tomorrow morning.   Winds trend westerly as the week progresses.