Forecasters discussion indicates some chilly temps....
Posted by Jim in Iowa on 12/29/2017, 5:32 pm
Brutally cold through much of the extended period with record lows
possible to start 2018 Sunday night into New Years Day.
Saturday through tuesday: incredible 1056 mb Arctic high pressure
will slowly build southward into the Midwest, reaching the Southern
Plains/mid MS valley by Tuesday. This will set up a prolonged period
of Wind Chill Advisory/warning headlines. We will have a Wind Chill
Advisory in effect all the way through noon on Tuesday. However,
wind chill warnings may be needed for at least a portion of the dvn
cwa from Sunday night through Tuesday morning. Of course, this will
include during the ringing in the New Year. Record low temperatures
are expected for January 1 and the grids indicate a forecast of 15
below to 20 below zero, with maximum temps staying below zero. It
is possible some spots may be colder considering the fresh deeper
snow pack. 850 mb temps dip as low as -22c. Wind chills Sunday night
and New Years Day is expected to be in the 30 below to 40 below zero
range! This would be extremely dangerous cold to say the least.
Wednesday through friday: another cold front arrives Wednesday but
this airmass not as cold with a 1038 mb high to follow and 850 mb
temps as low as -16c. Still very cold but not as brutal as earlier
in the week. The warmest day of the week should be on Friday
when highs moderate into the teens.
Just a little nippy
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