3/22/08 WEATHER

3/22/2008 Weather Discussion: High clouds will move in today as the next system approaches the coast. Increasing snow tomorrow with drying and cooling on Monday. Long-term models show a brief dry period on Monday with another cool and wet system moving in for the middle of the week. The NW jet should continue to push unseasonal weather through the PNW for most of next week. Forecast from Saturday 4pm to Sunday 4am Precipitation Lt .10 in. Water trace in. Snow Temperatures Low 28 High 34 Winds 5-10 E Forecast for Sunday 4am to 4pm Precipitation .5 in. Water 4-6 in. Snow Temperatures Low 26 High 30 Winds 0-5 SW TRENDS AND TIMING Precipitation: Snow should show up after 4am tomorrow morning. There are two waves of moisture associated with this system. The first will push through tomorrow morning with a midday break. Snow should re-develop after 4pm for another dose by Monday morning. Things should dry out on Monday. Freezing levels: Today’s surface temps should push above freezing with the aid of the sun. Freezing levels should then drop below pass level tonight and continue to drop below 2000’ by midnight tomorrow. Temps are expected to remain cool through most of next week. Winds: East flow will strengthen today as the cold front approaches. The westerly shift will slowly develop through the day tomorrow. Could see a strong wind event tomorrow night or early Monday morning as convergence conditions develop. jdm