May 23, 2013
A Large Upper Trough -- Surrounding A Polar Vortex Invof Hudson Bay
-- Will Remain In Place Across Most Of Canada And The Adjacent N
Central/Nern U.S. This Period...While The Srn Piece Of The Trough
Continues To Detach And Shift Ewd Across Tx As A Separate Closed
Low.
As This Secondary/Srn Low Shifts Across Tx Toward The Lower Ms
Valley Late...Very Weak Surface Cyclogenesis May Begin To Occur
Somewhere Invof The Central Gulf Coast States.
However...This Surface Response Will Likely Be Too Late In The Period And Still Too Under-Developed To Permit Appreciable Onshore Moistening/ Destabilization.
Thus...Thunderstorms Are Not Expected Here -- Or Elsewhere Across The Conus Where Stable Continental Air Will Prevail.
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