SPOT WEATHER FORECAST

11/19/2009 Weather Short term: Several fronts imbedded in this storm system will pass through the mountains for the next 24-48 hours. This will raise and lower freezing levels and thus bring a mixed bag of rain and heavy snow through the night. Long-term: A steady stream of active winter weather will continue well into next week. The potential is there to have a few more feet of snow on the ground by the end of the weekend. A high pressure ridge between storms could provide some drying late Sunday/Monday. 24 hour forecast starting at noon on Thursday Precipitation “ Water: .5 -.75 “ of Snow: 4-8” temperatures (F): 4000’ Low: 32 High: 36 5000’ Low: 28 High: 34 Winds speed/Direction Pass level: ESE 0-5 Ridge top: SSW 5-10 TRENDS AND TIMING Precipitation: There will be a lull in the action after closing today as the moisture lifts north. The best chance of rain/snow mix will be between 4pm today and 4am tomorrow. Temps should be back down tomorrow for a return of snow. Snow will increase tomorrow night as the Puget Sound Convergence potential develops. Freezing levels: Freezing levels will reach 4000’ by 4pm today and will peak just below 6000’ by midnight. They will drop below pass level sometime after 4am tomorrow. Snow levels will fluctuate between 3000 and 5000’ through the night. After tonight, freezing levels should stay in our favor through the weekend. Winds: Winds aloft will be Southerly through the night. Winds will then shift westerly in the wake of tomorrows cold front - could see some high convergence winds tomorrow night and Saturday morning. jdm