A Relatively Low Latitude Upper Trough With Embedded Stronger
Centers Of Vorticity Indicated In Water Vapor Imagery And Model Data
West Of Srn Ca/Baja Will Eject Newd And Inland Across The Lower Co River Valley On Saturday.
To The North Of The Srn Stream Trough...Strong Height Falls Will Spread Over The Pacific Northwest Associated With A Progressive Positive Tilt Upper Trough Moving East From The Pacific.
While A Broad Upper Ridge Will Dominate The Central U.S...A Compact But Potent Short Wave Trough Crossing New England Will Ensure That Cold Air Remains Entrenched Over The Northeast.
Southwest To Upper Rio Grande Valley...
Anomalously High Pw Was Already In Place Across Parts Of The
Southwest And May Contribute To Slightly Greater Chances For
Scattered Tstms During The Day And Evening From Sern Az To Nm On Saturday.
Models Depict A De-Amplifying Short Wave Trough Accelerating From Nrn Mexico/Lower Co River Valley To Srn High Plains During The Period. Enhanced Deep-Layer Ascent And Weak Destabilization Associated With This Impulse...In Concert With Sufficient Moisture Across The Region...Should Promote Convection Capable Of Sporadic Lightning Strikes.
Low Level Lift/Warm Advection Will Increase Coincident With
Strengthening Plains Low Level Jet Into Early Sunday Morning From
West Tx To Scntrl Plains.
Given Forecast Weakening Of The Mid/Upper Impulse And Very Limited Instability...The Chances For Tstms In This Regime...At Least Through 12z Sunday...Appear Too Low For An Otlk Area.
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