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Met Summer/Early Fall 16 Banter


dmillz25

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July was great here. 9.5" of rain with numerous T-storms. August has had nothing, but I can't complain. Our typical summer generally averages a handful of decent T-storm days.

Overall, this summer has been very enjoyable weather wise thus far. Would like to see at least a few more good T-storm days, which I expect we'll accomplish over the course of the next 5 weeks.

 

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Just an unbelievable run of extreme rain events and flooding in recent years across the US.

http://www.nws.noaa.gov/oh/hdsc/aep_storm_analysis/

 

Maps have been created for the following events:

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Interesting...

http://onlinelibrary.wiley.com/doi/10.1002/2016GL070373/abstract

The anomalous change in the QBO in 2015-16

The quasi-biennial oscillation (QBO) is a tropical lower stratospheric, downward propagating zonal wind variation, with an average period of ~28 months. The QBO has been constantly documented since 1953. Here we describe the evolution of the QBO during the Northern Hemisphere winter of 2015-16 using radiosonde observations and meteorological reanalyses. Normally, the QBO would show a steady downward propagation of the westerly phase. In 2015-16, there was an anomalous upward displacement of this westerly phase from ~30 hPa to 15 hPa. These westerlies impinge on, or “cut-off” the normal downward propagation of the easterly phase. In addition, easterly winds develop at 40 hPa. Comparisons to tropical wind statistics for the 1953-present record demonstrate that this 2015-16 QBO disruption is unprecedented.

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