May 20, 2013
Synopsis...
A Progressive And Dry Pattern Will Exist On Wed Over Much Of The
Conus...With Multiple Upper Troughs Trekking Along The U.S./Canadian Border. High Pressure Will Maintain Dry Conditions Over Much Of The
Cntrl And Nern States...With A Few Showers And Thunderstorms Along
The Cntrl Gulf Coast Region Where Residual Moisture And A Cool
Pocket Aloft Will Create Weak Instability.
Elsewhere...Relatively Zonal Flow Will Exist Over The Wrn States...With A Plume Of Moisture From Cntrl/Nrn Ca Into The Great Basin. Precipitation In This Region May Be Convective At Times...But Lightning Strikes Should Be Sparse.
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