Scientific Forecaster Discussion

NWS Discussion
			
				

Area forecast discussion 
National Weather Service Tulsa OK 
1223 PM CDT Tuesday may 21 2013 


Aviation... 
concerning taf sites ktul/krvs/kbvo/kmlc/kxna/kfyv/kfsm. 
Ceilings will be rather erratic over the next 12 hours or so 
with areas of showers and thunderstorms moving across the 
region. Skies are expected to begin to clear out later 
this evening. However...low clouds and fog may develop 
after the initial clearing takes place. VFR conditions are 
expected on Wednesday. 








&& 


Previous discussion... /issued 1102 am CDT Tuesday may 21 2013/ 


Discussion... 
elevated showers and thunderstorms continue across much of 
eastern Oklahoma and northwest Arkansas this morning north of a 
frontal boundary near the Red River. The flash flood threat continues 
from southeast Oklahoma into northwest Arkansas today as 1 to 3 inches 
of rain has fallen across much of this area during the last 24 hours 
with another 1 to 2 inches of rain possible through this evening. 


The threat for severe thunderstorms will increase this afternoon 
as a middle-level shortwave currently over the Texas Panhandle sweeps 
into the area. Most of the storms will be elevated in nature with 
large hail and winds the main concern. However...if a storm can 
become surface based near the boundary along the Red River...a 
tornado will be possible. 


Have not made any major adjustments to the grids for today. 
However...have continued to make minor adjustments to account 
for the latest trends. 


&& 


Tsa watches/warnings/advisories... 
OK...Flash Flood Watch until 7 PM Tuesday for okz049-okz053-okz068- 
okz069-okz070-okz071-okz072-okz073-okz074-okz075-okz076. 


Arkansas...Flash Flood Watch until 7 PM Tuesday for arz001-arz002-arz010- 
arz011-arz019-arz020-arz029. 


&& 


$$ 


Aviation...10