4/10/08 WEATHER

4/10/2008 Weather Discussion: High pressure currently building over the PNW will produce a warm and dry final weekend to Stevens Pass. Long-term models show a cold front moving through on Sunday. This will bring a return to a cool wet pattern for the up coming week. AVALANCHE AWARENESS: With the rapid rising temperature trend the avalanche potential will rise as well. Expect new snow surface slides of a foot or more on all sun exposed slopes tomorrow and through the weekend. Be careful out there. Forecast from Thursday 4pm to Friday 4am Precipitation 0 in. Water 0 in. Snow Temperatures Low 26 High 32 Winds 0-5 W Forecast for Friday 4am to 4pm Precipitation 0 in. Water 0 in. Snow Temperatures Low 26 High 50 Winds 0-5 W TRENDS AND TIMING Precipitation: Snow should taper off this evening. A dry pattern should remain in place though most of the weekend. Freezing levels: Freezing levels should reach pass level sometime this afternoon and slip back down to 3000’ overnight. Freezing levels will then quickly push up to 7000+ feet by tomorrow evening. Temps will rise higher on Saturday with freezing levels potentially peaking 10K or higher. Winds: Westerly winds will also taper off today in response to the building high pressure. Light westerly flow tomorrow will give way to a developing east flow on Saturday. jdm