879 
FXUS64 KMOB 141847
AFDMOB

Area Forecast Discussion
National Weather Service Mobile AL
1247 PM CST Mon Dec 14 2020

.NEAR TERM /Now Through Tuesday/...Very weak upper and mid-level 
ridging begins to build in over the region through the near term 
with a mainly southwesterly flow aloft existing above 500mb. In 
the lower levels, moderate cold air advection takes over in the 
wake of the frontal passage with a more northerly flow being 
dominant. Additionally, low-level moisture is still in place 
helping to keep a low-level stratus cloud deck across much the 
region due to no sufficient mixing or large scale subsidence 
occurring to impede the cloud deck from eroding. Visible satellite
imagery shows this cloud deck persisting across the region with 
some clearing near the immediate coast. At the surface, ridging 
builds into the region from the north through Tuesday. A mostly 
northerly to northeasterly flow will continue through Tuesday 
morning. High temps today are expected to range from the upper 40s
to mid 50s northwest of I-65, with mid 50s to low 60s southeast. 
The persistent low level cloud deck will help to moderate temps 
across the region today. Clouds are expected to somewhat clear 
overnight mainly over the eastern region of the CWA. This could 
impact low temps across the region being slightly warmer than 
expected in some areas. That being said, low temps tonight are 
expected to be in the low to upper 30s northwest of I-65 and upper
30s to low 40s southeast. 

An upper level system begins to traverse the plains through Tuesday 
reaching the central Plains by Tuesday evening. In the lower levels, 
a gradual shift to flow being more southwesterly will bring 
increasing Gulf moisture into the region through Tuesday as the 
upper level system approaches from the west. At the surface, a 
gradual shift in flow from northeasterly to southeasterly will begin 
to take place as surface low advances towards the region through 
Tuesday. High temps on Tuesday are expected to be in the mid 50s to 
low 60s across the region. JEH/88

&&

.AVIATION...
18Z issuance...Mixed MVFR/VFR conditions are expected across the 
region through the TAF cycle as a persistent low level stratus 
deck remains in place. MVFR remains prevailing at BFM and MOB 
through tonight and VFR prevailing at PNS. All TAF sites are 
expected to be MVFR by late tonight and into Tuesday morning. 
Winds will be mainly northwesterly around 10-15kts with higher 
gusts possible through the early TAF cycle. A gradual shift to 
more northeasterly will take place into Tuesday morning with winds
decreasing to between 5-10kts. JEH/88

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...None.
FL...None.
MS...None.
GM...None.
&&

$$

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