Weather 3/15/07

3/15/2007 Weather Discussion: A weak disturbance will lift north today bringing a chance of a snow shower or two through the night. Another SW flow is expected to take charge tonight bringing more precipitation and warmer temps to the PNW. The main energy seems to be held to the north of us but we will get residual effect. Long-term models show rising freezing levels, once again reaching 7000+ by the weekend. There is not as much energy as last weekend but it is a similar SW flow event. Yup – rain. Sunday looks dry at this point. Forecast from Thursday 4pm to Friday 4am Precipitation Lt .10 in. Water trace in. Snow Freezing Level 4000’ Winds 0-5 SE Forecast for Friday 4am – 4pm Precipitation .25 in. Water 0 in. Snow Freezing Level 6000” Winds 0-10 SW TRENDS AND TIMING Precipitation: Light mountain snow showers developing after 2pm. Precip. expected to change to light mountain rain showers over night. Light rain through tomorrow and Saturday. Freezing levels: Freezing level expected to slowly rise to pass level by 2am Friday and then continue its upward trend to peak near 7k by Saturday. High freezing level expected for most of the weekend. Winds: Current models are not showing any significant wind event with this system, although gusty frontal winds are possible.