May 20, 2013
Ca...
Weak Short-Wave Trough Will Undercut Nly Branch And Dig Esewd Toward Cntrl Ca Sunday.
Much Cooler Mid Level Temperatures Will Overspread The Sacramento Valley During The Afternoon Which Should Steepen
Lapse Rates Such That Weak Buoyancy Is Expected By Peak Heating. Forecast Soundings Suggest Sbcape On The Order Of 200 J/Kg Is Possible If Sfc Temperatures Warm Into The Lower 60s With Upper 40s Dew Points.
Scattered Diurnal Convection Is Expected Across The Valley Into The Higher Terrain Of The Nrn Sierra Nevada And The Deepest Updrafts May Penetrate Levels Necessary For Isolated Lightning.
This Activity Will Weaken With Loss Of Heating And Should Be Confined To The Mid-Late Afternoon Hours.
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