THE WEATHER

12/14/2007 Weather Discussion: Our winter storms are still on track to bring us snow this weekend. A warm front quickly followed by a cold front will generate windy conditions and snow tonight and most of tomorrow. Long-term models show a second stronger system arriving Sunday followed by continued unsettled weather for most of next week. Freezing levels looking good for snow throughout these storms. Forecast from Friday to Saturday 4pm 4am Precipitation .5 in. Water 4-6 in. Snow Temperatures Low 22 High 32 Winds 5-15 E Forecast for Saturday 4am to 4pm Precipitation .5 in. Water 4-8 in. Snow Temperatures Low 22 High 25 Winds 10-20 W TRENDS AND TIMING Precipitation: Snow developing after 4pm today and intensifying over night. The heaviest snow period appears to be in the early morning hours (2am –6am) Snow should begin to lighten up after 4pm. There should be a lull in the activity Saturday night before the next system arrives Sunday morning. Storm totals by Sat 4pm +-1” of water. Freezing levels: The approaching warm front will rise freezing levels to near 4000’ this afternoon but should be short lived. East flow will allow surface temps to remain below freezing thus keeping any threat of rain out of the picture. Freezing levels expected to drop below 3000’ through tomorrow. Winds: East flow should strengthen as the fronts approach tonight. East flow will eventually be overtaken by a strong westerly after 4am tomorrow morning. Good potential for a Puget Sound Convergence to be initiated for most of tomorrow morning.