1/1/2010 Weather
Short term: A low pressure system spinning just off the NW coast will drive waves of moderate to heavy precipitation into the PNW today. There still is a chance of warmer air invading, so the potential of some rain in the base are is still there. Moderate to heavy precipitation will continue today and tomorrow.
Long-term: Active weather will continue through the weekend. Long-range models start to disagree on what next week will look like. For now, another system will move up from the south on Monday. This has the potential to bring more warm air to the PNW.
24 hour Forecast Starting at NOON on Friday
Precipitation
“ Water: .75+
“ of Snow: 6-10
Temperatures (F):
4000’ Low: 24 High: 34
5000’ Low: 22 High: 30
Winds speed/Direction
Pass level: 10-15 WSW
Ridge top: 10 -20+ W gust to 40 possible.
TRENDS AND TIMING
Precipitation: Waves of moderate to heavy snow will continue today. Models are still indicating the potential for some rain/snow mix around 4000’ later today. A Puget Sound Convergence will be possible tonight. This could bump up snow totals.
Freezing levels: Freezing levels will be between 4000’-4500’ today and then fall to 3000’ tomorrow. There is a chance of a spike in freezing levels this afternoon as warm air tries to move in from the SW. Current east flow will help keep surface temps low until the shift in winds. Good old east flow. .
Winds: Winds are expected to shift from SE to SW and then W by this evening. High wind warning are currently posted on the coast. Look for strong Westerly winds to blow tonight - could get 40 mph gust. Winds should quickly taper off tomorrow morning as things start to calm down. JDM.
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