fxus64 kmrx 251919 

Area forecast discussion 
National Weather Service Morristown Tennessee 
319 PM EDT Thu may 25 2017 

Short term /tonight and Friday/... 
an upper-level low pressure system centered across eastern 
Kentucky will slowly depart the this evening and overnight. A 
shortwave trough associated with this feature has brought some 
widespread cloud cover to the Central Valley and points north and 
east, along with a broad area of light rain showers. This cool, northwest 
flow and the clouds/precipitation will keep temperatures peaking 
in the upper 50s to lower 60s this afternoon. Elsewhere to the 
south, breaks will allow highs to peak in the low to mid 70s. This 
northwest flow and cloud cover to the north will linger overnight, 
resulting in some gusty winds along the Blue Ridge and Cumberland 
mtns along the Kentucky/Virginia and Tennessee/NC border across upper east Tennessee. 
However, precipitation should generally wane late this evening to 
around midnight. 

Clouds will quickly break up by late tonight into early Friday 
morning as high pressure and drier air builds into the region. A 
wind shift to the south and ample sunshine will allow highs to 
climb back into the 80s areawide -- allowing the soils to begin to 
dry out a bit. 

Long term /Friday night through Thursday/... 
will be in an active weather pattern throughout the extended. 
Friday night into Saturday...flow aloft becomes zonal with a 
couple of weak short waves tracking along the upper flow. Could 
see isolated convection develop over northern locations late 
Friday night with the initial weak wave. Saturday...with diurnal 
heating and increased low level moisture...the air mass will 
destabilize. With another wave moving in...expect scattered 
thunderstorms to form over the region. A few storms may become 
strong to marginally severe for Saturday afternoon and evening. A 
frontal boundary will then move in and become the main weather 
feature for Sunday and Monday. The atmosphere will remain unstable 
and with the added energy from an 850mb jet and stronger lift 
from the boundary...expect widespread organized convection for 
Sunday afternoon. A few storms may become strong to severe. The 
boundary will remain in the vicinity on Monday and additional 
scattered convection is expected. Flow along again become zonal 
from Tuesday through Thursday and expect isolated to scattered 
convection each day. 


Preliminary point temps/pops... 
Chattanooga Airport, Tennessee 55 85 66 86 / 0 10 10 30 
Knoxville McGhee Tyson Airport, Tennessee 55 82 65 84 / 10 10 10 30 
Oak Ridge, Tennessee 54 83 65 84 / 10 10 10 30 
Tri Cities Airport, Tennessee 52 77 61 82 / 30 10 20 40 


Mrx watches/warnings/advisories... 

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