Scientific Forecaster Discussion

NWS Discussion
			
				

Area forecast discussion 
National Weather Service New Orleans la 
347 am CDT Sat may 25 2013 


Discussion... 
overall a fairly quiet weather pattern will prevail across area 
through the upcoming week...especially during the first half of 
the forecast period. A few showers have developed early this 
morning along the southeast Louisiana coast west of the 
Mississippi River in the vicinity of the cold front that pushed 
through most of the forecast area Friday. This boundary will 
likely continue its slow push to the south and west today with any 
additional shower activity in the forecast area ending by late 
morning. With the exception of the coastal showers this morning...the 
remainder of the Holiday weekend is currently forecast to be dry. 
One possible fly in the ointment is a middle level short wave over 
Texas that will be moving through the upper ridge and across the 
lower Mississippi Valley tonight and Sunday. At this time...it 
appears that the atmosphere will be too dry to support any 
convection across the local forecast area...although points north 
and especially west may see some convective development. After 
this feature moves through the region...upper level ridging will 
build over the southeast Continental U.S. During the work week as a broad 
upper trough evolves over much of the western half of the country. 
Deeper moisture will return by middle week as a southerly flow 
becomes established. This will yield daily scattered mainly 
afternoon showers and thunderstorms for the last half of the 
week. 


11 


&& 


Aviation... 
some middle and high level clouds due to convective blow off from 
Texas. Drier air is moving into the region however rain chances 
remain over Texas. Some clouds associated with this convection 
could once again bring middle and high level clouds to the terminals 
late today and into tonight. Rain chances at taf sites remains low 
and the drier air should keep visibilities in the VFR category. 


Keg 


&& 


Marine... 
drier air is moving into the coastal waters as high pressure builds 
into the region. During the transition there will be an increase in 
winds over most of the lakes...sounds... and coastal waters. Small 
craft should exercise caution through this morning mainly in the 
offshore waters. Southeast flow will return and once again increase 
winds and seas towards middle week. 


Keg 


&& 


Decision support... 


Dss code...blue. 
Deployed...none. 
Activation...none. 
Activities...slurry support. 
Monitoring river flooding. 




Decision support services (dss) code legend 
green = no weather impacts that require action 
blue = long fused watch/warning/advisory in effect or high 
visibility event 
yellow = heightened impacts with short fused 
watch/warning/advisory issuances; radar support 
Orange = high impacts - slight to moderate risk severe; nearby 
tropical events; hazmat or other large episodes 
red = full engagement for moderate to high risk severe 
and/or direct tropical threats; events of National 
significance 


&& 


Preliminary point temps/pops... 
mcb 87 59 86 60 / 10 10 10 10 
btr 88 66 87 65 / 10 10 10 10 
asd 86 62 85 64 / 0 0 10 10 
msy 87 69 86 69 / 0 0 10 10 
gpt 84 65 84 65 / 0 0 10 10 
pql 86 60 85 62 / 0 0 10 10 


&& 


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


$$