Severe Weather Threat Day 1 Sun Sep 29

An Initial Shortwave Trough Is Moving Inland Over The Nrn Rockies
And Weakening...As Another Trough Near 47 N And 136 W Approaches The Wa Coast This Evening.

Low-Midlevel Lapse Rates Near 7 C/Km And Moist Onshore Flow Will Maintain Weak Buoyancy And A Risk For Isolated Low-Topped Thunderstorms Today Along The Pac Nw Coast.

The Risk For Isolated Strong/Severe Gusts Will Increase This Evening In Conjunction With The Approach Of The Upstream Shortwave Trough.

Likewise...Wind Profiles Will Strengthen...With The Greater Risk For
Strong Gusts Accompanying An Enhanced Convective Band Along The Baroclinic Zone.

Otherwise...A Few Thunderstorms Will Persist Today Across Se Tx And La In A Moist Environment Preceding A Slow-Moving Cold Front.
Buoyancy Is Already Marginal Across This Area...Where Widespread
Clouds And Poor Lapse Rates Aloft Will Limit The Potential For
Additional Destabilization This Afternoon. Meanwhile...The
Combination Of Weak Buoyancy And Relatively Weak Vertical Shear Will Not Support Organized Severe Storms.

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