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The Oregon Chapter of the American Meteorological Society (AMS) Presents: A Technical Analysis & Recap of the December 2010 Aumsville, Oregon Tornado Thursday,

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Presentation on theme: "The Oregon Chapter of the American Meteorological Society (AMS) Presents: A Technical Analysis & Recap of the December 2010 Aumsville, Oregon Tornado Thursday,"— Presentation transcript:

1 The Oregon Chapter of the American Meteorological Society (AMS) Presents: A Technical Analysis & Recap of the December 2010 Aumsville, Oregon Tornado Thursday, January 20 th 2011 OMSI – Portland, Oregon

2 Oregon AMS Reminders & Updates Oregon AMS yearly membership dues for 2010/11 were due as of September. Only $7 per year. Please see John at the back table to renew or join. The Oregon AMS is continually seeking new members. All are welcome. You can also join us in the world of social networking. We are on and we are also on Facebook. Our chapter website has all the details about upcoming meetings along with past meeting notes, if you missed one. We are located at:

3 Oregon AMS Reminders & Updates * The Oregon Chapter of the AMS is proud to be the single largest non-college chapter in the country members strong! We have added another 30+ members since the Winter Weather Meeting here at OMSI, back in October. * The Annual AMS Conference is taking place in Seattle next week. The topic this year is Communicating The Weather! Details are posted on our web site as well the National AMS site. * NEXT OREGON AMS MEETING – Saturday, February 12 7pm. Dinner meeting at the O.S.F in Clackamas! AMS Secretary Kyle Dittmer and AMS member Chris Beltrone will present the topic Did The Iceland Volcano Impact Our 2010 Weather? RSVPs will be requested for this dinner meeting. More details to come! Check our web site for updates!

4 – 2010/2011 Oregon AMS Executive Council – Bobby Corser - President Steve Pierce - Vice President Kyle Dittmer - Secretary John Rinier - Treasurer & Web Master Councilors - Matt Zaffino, Mary Loos, Dave Salesky, Tyree Wilde, Chuck Wiese, Charlie Feris, Bruce Sussman, Nick Allard, Mark Nelsen, Michael Rice, George Miller, Jonathan Wolfe, Rian Muleback & Dave Lamb

5 Tonights Agenda Opening Presentation: George Miller - Retired National Weather Service Meteorologist - A look at historical Oregon tornadoes. How often do they occur and how strong are they? Main Presentation: Jonathan Wolfe & Tyree Wilde - National Weather Service Meteorologists - A technical analysis and recap of the December 14 th 2010 Aumsville, Oregon Tornado. Tonights meeting is scheduled to end no later than 9:00pm.

6 Flooding Last Weekend The Standout Stats Timberline, Oregon (6,000ft elev) = 9.51 From 11am Saturday to 5pm Sunday (30 hours)! Average = 0.32 per hour, every hour, for 30 hours! Not including snow melt!

7 So, when does Portland get in on the snow action this winter? Drum roll please… Fresh from the 18z GFS model run 2 hours ago…

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9 Tornado True or False The deadliest tornado in modern day history (1950- Present) to strike west of the Rocky Mountains occurred just outside of Los Angeles, California in May of 1964?

10 Tornado True or False The deadliest tornado in modern day history (1950- Current) to strike west of the Rocky Mountains occurred just outside of Los Angeles, California in May of 1964? FALSE

11 Tornado True or False - Answer - At approximately 12:50pm on April 5 th 1972, an F3 tornado tore through Vancouver, Washington killing 6 people and injuring 300 in an elementary school, grocery store and bowling alley. It was the deadliest tornado in the United States that year and stands to this day as the deadliest recorded tornado to strike west of the Rocky Mountains in modern times (1950-Present).

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