STOT WEATHER FORECAST

12/11/2008 Weather Discussion: Today will be pleasant in preparation of a strong winter storm bearing down on the PNW. This storm is packing very high winds and snow along very cold arctic air in tow. The southern part of the region will get the brunt of the activity. Long-term models show this storm being over sometime early Sunday morning. Then there will be a cold dry period through the middle of next week. Forecast from Thursday 4pm for Friday 4am Precipitation 0 in. Water 0 in. Snow Temperatures Low 28 High 34 Winds 0-10 W SW Forecast for Friday 4am to 4pm Precipitation .25 in. Water 2-4” in. Snow Temperatures Low 24 High 30 Winds 5-15 SW gusty TRENDS AND TIMING Precipitation: We should start to see the snow fly sometime tomorrow. Snow will intensify through the night with the best hours of accumulation between 4pm and 4am. Snow should taper to showers Saturday night with drying on Sunday. Storm totals are currently calculating out to be about a 1” of water which will be somewhere around a foot of snow by Saturday 4pm. Convergence zone influence could push those numbers up a bit. Freezing levels: Freezing levels will trend down from 4000’ to 2000’ tomorrow and eventually reaching sea level by Saturday. Cold temps will remain entrenched through the middle of next week.