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Area forecast discussion 
National Weather Service Omaha/valley NE
545 PM CDT Sat Sep 20 2014

Short term...(tonight through tuesday)
issued at 320 PM CDT Sat Sep 20 2014

The main forecast concerns in the short term will be a
reinforcing cold front tonight and some increased winds this
evening...then the return of shower and thunderstorm chances
Monday night into the rest of the work week.

The surface cold front continues to push through southeast
Nebraska into northwest Kansas. Meanwhile...a reinforcing cold
front will push into the plains as shortwave trough energy tracks
from Canada into Minnesota and the Great Lakes. The latest WSR-88D
radar imagery shows a cluster of storms near the cold front in
northeast Kansas. In area of storms is moving
through Minnesota and parts of eastern South Dakota.

Tonight...a few clouds may affect the northeast parts of the
forecast area...however the organized precipitation is expected remain
to our northeast. In addition...stronger winds aloft with the cold
air advection may result in some gusty surface winds for a time
this evening. Wind gusts in the 30 to 35kt range have been
frequent across South Dakota this afternoon with the 3-5mb
pressure rises. The stronger h9 winds of 45kts will track across
Minnesota...with 30 to 35kt h9 winds across the local forecast
area. Did boost the winds behind the secondary cold front into the
10 to 16kt range just behind the front...then drop them back to
less than 10kts. Lows tonight should settle back into the 50s.

Forecast soundings keep the bulk of the moisture to our east
Sunday...however some instability cumulus may develop from near
the Missouri River into western Iowa. Cooler highs in the 70s are
forecast for Sunday. Surface high pressure will prevail Sunday
night with lows in the 40s and a few local lower 50s.

Monday night and Tuesday...a middle tropospheric trough over The
Rockies will work it/S way into the plains. This will bring
increasing moisture and increasing shower and thunderstorm chances
with it. Temperatures Monday and Tuesday should remain cool to
near normal in the 70s.

Long term...(tuesday night through saturday)
issued at 320 PM CDT Sat Sep 20 2014

The upper level weather system over the plains is slow to
move...thus the chance for showers and thunderstorms remains in
the forecast Tuesday night through Friday. The precipitation is
more isolated and the forcing weak on Friday. Highs should remain
comfortable in the 70s.


Aviation...(00z tafs for kofk...klnk and koma.)
Issued at 545 PM CDT Sat Sep 20 2014

Expect VFR conditions through the period. North/northwest winds
will decrease this evening...then increase by late Sunday morning.
Some gusts over 20 knots will be possible Sunday afternoon.


Oax watches/warnings/advisories...


Short term...zapotocny
long term...zapotocny

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