859 
fxus64 klix 072136 
afdlix 


Area forecast discussion 
National Weather Service New Orleans la 
336 PM CST Wednesday Jan 7 2009 


Discussion... 
tranquil weather will prevail through the end of the work week as 
the eastern Continental U.S. Upper trough shifts east into the Atlantic and a 
more zonal flow pattern evolves over the southern untied states. 
At the surface...high pressure will gradually slide east allowing 
southerly flow to develop over the forecast area by Friday with 
temperatures moderating in response. The next significant weather 
for the area will come Saturday in the form of scattered showers 
as a middle/upper trough moves from the central to the eastern Continental U.S. 
Over the weekend pushing a cold front across the forecast area 
Saturday afternoon. Colder air in the wake of this front will drop 
temperatures down to below normal readings for the last half of 
the weekend and into next week. A deep upper trough is forecast to 
be carved out over the eastern Continental U.S. Early next week which will 
allow reinforcing shots of cold air to filter into the southern 
states. The GFS solution is significantly colder than that of the 
European model (ecmwf) by the middle of next week of the eastern U.S. 


&& 


Aviation... 
a broad ridge of high pressure will build into the area tonight. 
VFR conditions are expected at all terminals as strong subsidence 
and dry air allow for clear skies. 32 


&& 


Marine... 
surface ridging will become centered over the coastal waters 
tonight...allowing for westerly flow of 10 to 15 knots. Winds will 
increase into exercise caution range tomorrow...as the pressure 
gradient tightens up a bit due to a low passing north of the 
region. However...winds will quickly die off by tomorrow 
evening...as the gradient weakens. Small craft conditions may 
redevelop going into Saturday night in the wake of another frontal 
passage. However...these conditions will be short lived...as 
surface ridging builds in on Sunday and remains in place through 
Monday. 32 


&& 


Preliminary point temps/pops... 
mcb 41 68 43 71 / 0 0 0 0 
btr 44 69 46 73 / 0 0 0 0 
msy 47 69 49 73 / 0 0 0 0 
gpt 43 69 46 68 / 0 0 0 0 


&& 


Lix watches/warnings/advisories... 
la...none. 
MS...none. 
GM...none. 
&& 


$$ 


11/32