What can I say, other than that the
warm conditions will continue, at least through Wednesday.
Then, a somewhat complicated scenario
will unfold across the region for Wednesday and Wednesday night. An
upper level trough will progress east across the northern and central
Plains before beginning to dig southeast towards the Ohio Valley by
Thursday morning. This trough will drive a cold front south through
the Missouri Ozarks from Wednesday evening into the overnight period.
Confidence remains high that most of the area will see a round of
showers and thunderstorms along and behind that front Wednesday
night.
Another feature of note is a short wave
trough that is forecast to move northeast through northern Arkansas
or southern Missouri from Wednesday morning into perhaps early
Wednesday afternoon. This feature could provide a trigger for
earlier convection. This will especially be true if that wave arrives
a bit slower (during peak heating) than models are advertising.
Otherwise, Wednesday may largely be dry for the majority of the
Missouri Ozarks.
There may be a window of opportunity
for some stronger storms from southeastern Kansas into west-central
Missouri where current model forecasts indicate a decent likelihood
for MLCAPEs of 1000-1500 J/kg and effective deep layer shear around
30 knots Wednesday afternoon and early Wednesday evening. The key
will be whether or not storms can push into this region before
instability begins to wane due to the loss of daytime
heating.
That digging wave will then drive that
front down into the northern Gulf of Mexico by Friday morning. After
another mild Wednesday, cooler temperatures are expected to end the
work week. Highs will be in the upper 60's to around 70 degrees with
lows in the 40s.
The upcoming weekend then looks very
pleasant as a sprawling area of surface high pressure slowly makes
its way southeast across the Middle Mississippi Valley region. High
temperatures will remain in the upper 60's to lower 70s.
There are some signals for a system
passing through the region sometime in the Monday night through
Wednesday time frame. However, global models really seem to be
struggling with the large scale pattern. Thus, confidence is very low
regarding what will transpire early next week.
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