SPOT WEATHER FORECAST

11/9/2009 Weather Discussion: Small but vigorous frontal bands will pass through the mountains today and tomorrow bringing some snow with each passing system. Long-term models show NW flow continuing to bring wintery weather to the NW Mountains for most of the week. 24 hour forecast starting at noon on Monday Precipitation .5+ in. Water 3-6 in. Snow Temperatures Low 26 High 34 Winds 5-10 SE shifting 0-10 SW TRENDS AND TIMING Precipitation: The first band will pass through today and continue through the night. There will be a brief dry period tomorrow with the next band moving in Tuesday evening. A bigger system is setting up for Wednesday/Thursday with cooler temps in tow. Freezing levels: There will be a spike up in temperature with the passing of these small fronts. The freezing level will hover between 3500 and 4500’ until Wednesday when it is expected to drop below 3000’. There should be enough cold air aloft to keep the snow line below the highway level. However, I wouldn’t rule out a rain drop or two mixed in with snow. Winds: SSE flow will be blustery today. Winds will slowly shift SW then W by overnight. Not expected any significant winds through the pass until Wednesday when we could see our friend, the Puget Sound Convergence.