11/21 Snow Forecast

Posted by
Temira
Date
 November 21, 2011
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Good morning!

Mt. Hood Snow Forecast – 5000′
4a-8a 8a-12p 12p-4p 4p-8p 8p-4a
Monday
Tuesday
Tuesday

Good morning!

Sometimes putting the forecast together is like reading a good thriller or mystery novel. This week definitely qualifies At one point, NOAA was comparing the incoming system to this – http://en.wikipedia.org/wiki/Great_Coastal_Gale_of_2007 – system from a few years ago. Fortunately, the comparison is no longer apt, but tomorrow’s system is still going to impact the PNW heavily.

On Mt. Hood today, we’ll see slowly rising snow levels. Currently, the snow level is around 2500’, but it will rise to 5000’ by 4pm and 5500’ by 10pm. Snowfall will be moderate during the day, with .4-.5” water value for 3-5” of new snow. Precip will become heavy after 10pm, likely in the form of snain overnight, switching to rain early tomorrow morning. Winds will be SW 30-40 early, rising to 45-50 by 10am.

At 4am Tuesday, the snow level will be around 6000’, rising as high as 8000’ around 1pm. Total precipitation during the day depends on the exact location where this system stalls, but as of right now, it looks like we’ll get 1-1.5” of rain, while the Washington Cascades get 2-3”+ and the coast range gets 3-8”. Most of the rain will fall before 7pm, becoming light after that. That’s the good news. The bad news, of course, is the wind. We’ll start off with SW 45-55 at 4am, rising to SW 50-65+ at 7am, and holding all day. These are predicted speeds for top of Mt. Hood Express, not for the ridgelines and areas above treeline, where the wind will be stronger.

After light rain/freezing rain/snow overnight, the snow level falls to 4500’ by 7am Wednesday with heavy precipitation. There’s a possibility this could remain freezing rain for a bit. The snow level keeps falling quickly (thankfully), hitting 2500’ by 1pm and 1500’ by 7pm. Total precip will be .5-.75” water value for 6-9” of snow (however, I wouldn’t be surprised to see a lot more).

If you want windsurfing or kiting, you’ll see 23-26 in the desert today and another round of wind out east tomorrow.

Have an awesome day today!

Temira

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