Discussion scientifique du spécialiste des prévisions météorologiques

NWS Discussion
			
				

Area forecast discussion 
National Weather Service Nashville Tennessee 
255 PM CDT Friday may 24 2013 


Discussion... 
skies have continued to clear with just isolate to scattered cumulus clouds 
remaining. The drier air and strong thermal troughing will equate to 
dry and cooler than normal conditions through Sunday. The coolest 
temperatures will occur Sat morning when the surface high is at its closest 
proximity. A warming trend will then commence as weak upper ridging 
and height rises occur. Temperatures by Monday will return to above 
normal values. 


In the ext forecast...with the upper ridge axis located to our 
west...this will enable a northwest flow to continue. Disturbances 
within the flow will become apparent Sunday night and Monday. The 
main focus of convection will be north of middle Tennessee but on Sunday 
night and especially on Monday...there is a risk of convection 
returning to primarily the northern half of the County Warning Area. For the 
forecast will include 20-30 percent probability of precipitation. 


Upper ridge axis will shift east and over middle Tennessee by middle week. 
Furthermore...the ridge will amplify bringing warmer but dry weather 
to the area. So...other than sun nt and Monday...the extended is 
looking dry. 


Versus the ext guidance...will slightly undercut temperatures in the early 
portions of the extended. In agreement with near 90 for highs by 
late week as the upper ridge builds. 


Preliminary point temps/pops... 
Nashville 48 78 52 82 / 0 0 10 10 
Clarksville 46 78 50 83 / 0 0 10 10 
Crossville 42 71 45 77 / 0 0 10 10 
Columbia 48 79 51 84 / 0 0 10 10 
Lawrenceburg 48 80 50 84 / 0 0 10 10 
Waverly 47 78 51 84 / 0 0 10 10 


&& 


Ohx watches/warnings/advisories... 
none. 
&& 


$$ 


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