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fxus64 klix 160038 
afdlix

Area forecast discussion
National Weather Service New Orleans la
638 PM CST Fri Dec 15 2017

Sounding discussion...

The 00z sounding shows a colder and more stable layer of air
extending below 750mb to the surface. This cold and stable airmass
is also significantly drier than the airmass above as noted by a
low 850mb relative humidity of only around 25 percent. The cold pool in the low
levels has also produced a decent temperature inversion between
the surface and 750mb of around 1.5c. The combination of this
temperature invesion along with the dry air has resulted in no
cloud formation in the low levels of the atmosphere today.
However, above 750mb strong west-southwest flow has continued to
pump in a very moist and more unstable airmass in the mid and
upper levels of the atmosphere. This is little changed from the
12z sounding with the only noticable difference being a continued
warming of the temperatures aloft. This has pushed the freezing
level up from 9600 to 11400 feet since the 12z sounding.
Otherwise, the atmosphere aloft is nearly saturated and lapse
rates are moist adiabatic in nature. The dense shield of
altostratus observed at launch should persist according to the
latest sounding. 32

&&

Preliminary point temps/pops...
mcb 32 55 48 68 / 0 10 30 80
btr 35 57 51 71 / 0 10 30 90
asd 35 57 51 72 / 10 10 20 80
msy 42 56 53 73 / 10 10 20 90
gpt 38 55 52 70 / 10 10 20 80
pql 35 56 50 72 / 10 10 10 80

&&

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

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