May 20, 2013
An Upper-Level Trough Over The Intermountain West Will Move Ewd And
Amplify Tonight. Ahead Of The Upper-Level Trough...Large-Scale
Ascent And Cooling Temps Aloft Could Result In Isolated Thunderstorm
Development From Srn Ut Swd Into Cntrl Az.
A Few Thunderstorms May Also Develop This Evening Along The Wrn Shore Of Lake Mi As A Shortwave Trough Approaches From The West.
None Of The Thunderstorm Activity Across The Conus Is Expected To Become Severe Through Tonight.
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