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Wind direction change = 17 degree jump in 8 minutes


Mallow

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Cold easterly winds out of the Gorge were replaced by warm southerlies, wiping out the final vestiges of the inversion over the Willamette Valley this morning. Places close to the Gorge had a very rapid temperature jump.

http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=MODT29&month=1&day=12&year=2011

http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=MKPQR&month=1&day=12&year=2011

Even the airports saw a 15-degree temperature jump from one hourly report to the next.

http://www.wunderground.com/history/airport/KPDX/2011/1/12/DailyHistory.html

http://www.wunderground.com/history/airport/KTTD/2011/1/12/DailyHistory.html

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I despise winter time inversions in mountain valleys. Probably one of the hardest things to forecast in some of the deeper mountain valleys--how much, if any, of the inversion mixes out during storm events.

Yup.

And in winter, that's pretty much my job. Will the southwesterlies make it into the Columbia Gorge to give our wind assets very high production, or will they ride above the inversion keeping our assets near zero? That's what I've been trying to figure out the past two days, in real time. :(

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