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Area forecast discussion
National Weather Service Omaha/valley NE
548 PM CST Tue Dec 12 2017

Short term...(tonight through friday)
issued at 319 PM CST Tue Dec 12 2017

Quiet weather tonight with west southwest winds ahead of a strong
cold front that moves into the area on Wednesday as an Alberta
clipper moves out of the northern plains. This could bring
isolated showers to the NE/SD/IA tri state region in the morning,
but more importantly, will substantially increase northwest winds
by mid morning. Wind gusts could easily reach 45 to 55 mph as the
surge of colder air begins to move in. Thus we issued a Wind
Advisory for northeast NE and west central Iowa valid from 9am-4pm.
Locations south of the advisory area may be just below Wind
Advisory criteria with gusts up to 45 mph, but will let the next
shift decided if the advisory needs to be expanded further south.

Quiet and colder weather again for Wednesday night. Another
Alberta clipper arrives on Thursday, which brings a chance of snow
and rain to the area, with minor accumulations less than 1/2 inch
possible in northeast NE. Precip lingers into Thursday evening,
but ends by midnight. Warming temps expected again for Friday with
west southwestern surface flow.

Long term...(friday night through tuesday)
issued at 319 PM CST Tue Dec 12 2017

Another Alberta clipper drives a cold front into the area on
Saturday. Still there is not impressively cold air with this next
front, but it will still bring a small chance of rain changing to
snow along/north of i80 by Saturday afternoon/evening. Slightly
cooler but still above normal on Sunday, then moderating temps
well above normal for Monday and Tuesday.

&&

Aviation...(for the 00z tafs through 00z Wednesday evening)
issued at 526 PM CST Tue Dec 12 2017

A cold front dropping into ern NE overnight will be the focus for
an extreme low level wind shear threat at all terminals from mid evening into
Wednesday morning. Directional shear of 35kt is expected to develop
this evening before evolving to speed shear of 50kt shortly after
midnight. The low level wind shear threat will diminish then late Wednesday morning.

&&

Oax watches/warnings/advisories...
NE...Wind Advisory from 9 am to 4 PM CST Wednesday for nez011-012-
015>018-031>034.

Iowa...Wind Advisory from 9 am to 4 PM CST Wednesday for iaz043-055-
056.

&&

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