Weather

591 
fxus64 kshv 072110 
afdshv 


Area forecast discussion 
National Weather Service Shreveport la 
410 PM CDT Thursday Aug 7 2008 


Discussion... 


After today looks as if the weather will be a little cooler with 
better chances of rain each day. A ridge of high pressure aloft 
will be situated over The Rockies into central Canada with closed 
low one either side of the system over the West Coast of Canada 
and over eastern Canada north of the Great Lakes with trailing 
troughs down East Coast. This pattern will remain through the 
forecast period with weaker short waves moving through the northwest 
flow aloft keeping rain chances in just about every day and keeping 
temperatures on a lower trend until early next week when longer 
periods between disturbances. This evening outflow boundaries from 
earlier storms up north along with a cold front have bridged together 
to produce showers and thunderstorms and northerly winds over the 
northern sections of the four state region. This boundary will move 
into the central sections of the forecast area late tonight and 
early on Friday. The boundary will become stationary and remain a 
helping focus for showers and thunderstorms into Friday night. The 
front will move back north only to be affected by the next south 
moving front Saturday and Saturday night. /06/ 


&& 


Aviation... 


Scattered rain showers/thunderstorms and rain will continue propogating SW along an outflow 
boundary into the evening hours. I expect the convective coverage 
to dissipate...at least briefly...after sunset. Meanwhile...the 
front across central Arkansas will continue to back door toward the 
forecast area tonight. It should make it toward a ktxk-keld line 
around 08/0600 UTC. Additional rain showers/thunderstorms and rain will likely accompany the 
front...with the greatest likelihood for seeing convection at 
terminals north of ih-20. Convection will likely increase in coverage 
again Friday...as daytime heating interacts with the boundary and a 
shortwave trough. Ceilings should primarily remain VFR...except in the 
vicinity of convection...where flight category reductions may be 
seen. /Butts/ 




&& 


Preliminary point temps/pops... 
shv 75 93 71 93 72 / 40 50 30 30 20 
mlu 75 92 68 92 70 / 50 50 30 30 30 
deq 72 92 70 92 70 / 50 50 30 20 30 
txk 74 92 71 92 71 / 50 50 30 30 30 
eld 73 92 68 92 70 / 50 50 30 20 30 
tyr 73 96 73 94 73 / 30 50 30 20 20 
ggg 74 94 72 93 73 / 30 50 30 20 20 
lfk 75 96 72 94 72 / 30 50 30 20 20 


&& 


Shv watches/warnings/advisories... 
Arkansas...none. 
La...none. 
OK...none. 
Texas...none. 
&& 


$$ 


06/21