SPOT WEATHER FORECAST

11/14/2009 Weather Discussion: Clouds will increase today as a deep, south reaching trough approaches the coast. This will bring the next round of precipitation with warming temperatures to the mountains tomorrow. This system will draw up warm air from the SW as and parks itself off the NW coast. Long-term models show an active weather pattern with an overall cooling trend continuing through most of next week. Rain showers expected Sunday night and Monday. It is looking ok for snow after Monday. 24 hour forecast starting at noon on Saturday Precipitation “ Water: .25-5 “ of Snow: 4-6 Base area temperatures (F): Low: 20 High: 34 Winds speed/Direction Pass level: 0-5 WNW Ridge top: 5-10 WNW TRENDS AND TIMING Precipitation: Snow should develop after midnight and ramp up during the day. We should get some good accumulation before it turns to rain after 4pm tomorrow. The good news is that most of the heavy precipitation will be confined to the northwestern coast and NW corner of the North Cascades. This will hopefully just provide marginal rain amounts for the North Central Cascades. Freezing levels: Freezing levels will begin to rise through the night. Freezing levels are expected to reach 4000’ by tomorrow afternoon. Freezing levels will continue to rise reaching 6-7000’ on Monday. Freezing levels will begin to fall on Tuesday. Winds: Light WNW winds will shift W then SW as the front approaches. Could see some gusty frontal winds tomorrow afternoon. SW flow will dominate through Monday. JDM