To me a good vegetable soup (one that's homemade) is always a
surprise mainly because you never know what’s going to be in it. A lot depends
on the chef’s whim not to mention what might be on hand. Well, the weather for
this coming Wednesday night through Thursday time frame is something like that
soup. Much will depend on what ‘ingredients’ show up for the party of in this
case winter storm.
I’d have to agree with one forecaster who mentioned that
much of what we will get will depend on the temperature profile for today. The
warmer it gets before nightfall, the longer it will take for frozen
precipitation to develop. Having said that, another fly in the ‘soup’ will be
what happens at the various levels of the atmosphere as a predicted cold front
pushes into, and under a colder dome of air that was already in place. As the
picture above indicates, it then becomes possible for any snow that’s generated
to then fall into slightly warmer air where the flakes just barely melt but are
still very cold. Then when these super-chilled rain drops enter another level
of cold air just above the surface, the drops can flash freeze on any surface
they come into contact with. Voila – an ice storm is born…or not – it’s all
about the timing.
So, when I’m looking at the system that is currently over to
mountains and am thinking about what kind of soup we will be having, I tend to
go with the vegetable variety or a little bit of everything!
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