Tuesday, September 4, 2018

A Stuck September Pattern

The 500-mb loop below covers a 9-day period from 1200 UTC Saturday 2 September through 1200 UTC 11 September and illustrates that we're looking at a stuck September pattern for the first part of the month.  Note that the persistent tropical easterlies to our south, the mid-latitude westerlies to our north, and the general tendency, once very weak troughing exits our area after about 6 September, for broad upper-level ridging. 

By and large, this looks like a monotonous weather pattern for northern Utah, albeit one that should produce stellar September weather with only a slight risk of a shower or thunderstorm Wednesday and Thursday.  I'd use the term fall like, except high temperatures look to be in the upper 80s, which is a bit toasty to be fall like for me. 

Furthermore, unless we get a big cloud burst Wednesday or Thursday, our stretch of well below average rainfall will continue.  Since June 1st, the airport has only had 0.74" of rain, the 12th lowest total since 1874. 

Let us hope Mother Nature is saving up the moisture for November...

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