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Area forecast discussion...updated aviation 
National Weather Service St Louis MO
629 am CDT Tue Apr 28 2015

Short term: (through this afternoon)
issued at 309 am CDT Tue Apr 28 2015

Upper-level low will move east-southeast today with some mid/high level cloudiness
affection portions of south-central and southeast Missouri predominantly.
Scattered diurnal cu is also expected to develop by early afternoon
across most of the area.

High temperatures will be primary sensible weather concern and went
above MOS guidance in most areas due to forecast cloud trends mentioned
above. Seasonably cool conditions with highs a touch warmer than Monday
for most areas is expected.


Long term: (tonight through monday)
issued at 309 am CDT Tue Apr 28 2015

(tonight through thursday)

Main focus will be temps thru the period.

Not many changes to the prev forecast as it still appears to be on
track given the latest guidance. Upper low is progd to drop swd
along the MS rvr late tonight thru Wed associated with a weak sfc
fnt. Expect rather deep mixing ahead of this fnt and have continued
warm trend for Wed. This S/W may may help support isod to sct
diurnal rain showers across ern portions of the County Warning Area. Another S/W and
associated backdoor fnt is expected to move swd thru the region on
thurs. This S/W is stronger than the one on Wed. However, with this
fnt lacking moisture, believe any precip will remain east of the County Warning Area.
As for temps on thurs, have trended twd a compromise for now with
the GFS as a warmer outlier.

(Friday through monday)

Mdls prog pattern becoming zonal with the sfc ridge finally moving
ewd and warm air advection pattern setting up at low levels. This will bring an
increased chance for precip and warmer temps. With precip chances
centered around weak S/ws, timing will be difficult to pin down.
Have therefore kept pops on the low end until sun into Mon as a
stronger trof approaches with an associated cdfnt stretching thru
the region.



Aviation: (for the 12z tafs through 12z Wednesday morning)
issued at 624 am CDT Tue Apr 28 2015

VFR conditions will continue to prevail over the next 24 hours as
upper-level low pressure system stays well to the south of the
area. Few-scattered diurnal cu expected today along with some cirrus
from aforementioned storm system. Light/variable winds this
morning will increase toward 10 knots and become more
northeasterly today. Mostly clear skies with light/variable winds
then expected for tonight.

Specifics for kstl:

VFR conditions will continue. Scattered diurnal cu expected today along
with northeast winds around 10 knots. Mostly clear skies with
light/variable winds forecast for tonight. For Wednesday
late morning/early afternoon...light northwest winds and some more diurnal cu.



Preliminary point temperatures/pops:
Saint Louis 69 48 71 49 / 0 0 10 10
Quincy 70 44 71 46 / 0 0 10 5
Columbia 70 46 72 48 / 0 0 5 0
Jefferson City 70 44 71 47 / 0 0 5 0
Salem 65 44 67 46 / 0 5 10 20
Farmington 64 43 68 45 / 0 10 10 10


Lsx watches/warnings/advisories:


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