U.S. Severe Weather Forecast (Convective Outlook)

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Day Three

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Storm Prediction Center ac 150724 


Day 3 convective outlook 
National Weather Service Storm Prediction Center Norman OK 
0224 am CDT Monday Sep 15 2014 


Valid 171200z - 181200z 


..no severe thunderstorm areas forecast... 


... 
widely scattered thunderstorms are expected to develop Wednesday 
afternoon across parts of the Desert Southwest eastward into the 
Rocky Mountains. Isolated to widely scattered thunderstorms should 
also develop from the central and Southern Plains southeastward into 
the lower Mississippi Valley. 


An upper-level trough is forecast to move eastward into the southern and central 
Appalachian Mountains on Wednesday as a upper-level ridge moves across 
the central and northern rockies. At the surface...high pressure will dominate 
the middle MS valley and western Great Lakes region as a moist airmass 
remains in place from the southern and Central Plains southeastward into the Gulf 
Coast states. Isolated to widely scattered thunderstorms may develop 
from the Great Plains southeastward into the central Gulf Coast states 
Wednesday afternoon as surface temperatures heat up. Other thunderstorms should 
develop in the higher terrain of the Desert Southwest and Rocky 
Mountains. Due to relatively weak instability and limited deep-layer 
shear across the Continental U.S....a severe threat is not anticipated 
Wednesday or Wednesday night. 


.Broyles.. 09/15/2014