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Area forecast discussion
National Weather Service Omaha/valley NE
626 am CDT Wed Sep 26 2018

Short term...(today through friday)
issued at 140 am CDT Wed Sep 26 2018

High pressure will reside over the area through Thursday, with dry
and cool conditions expected. Tonight northerly winds will remain
light and skies should remain clear. Wednesday morning
temperatures are expected to be below average, ranging from the
upper 30s in the northeast to the mid 40s further south. Winds
will turn to southerly on Wednesday and temperatures remain in
the upper 60s across the area.

By Thursday a front is expected to drop south from the Dakotas
leading to cloudy conditions and northerly wind shift. Behind the
front, moisture will increase by Thursday night and showers are
expected to drift south overnight. By Friday morning showers
should be stretching south of I-80. Showers will come to an end
in the northeast by early Friday afternoon. Friday morning lows
should range from the mid to upper 40s. With clouds and showers
lingering in the area Friday, highs are only expected to reach the
upper 50s to around 60.

Long term...(friday night through tuesday)
issued at 140 am CDT Wed Sep 26 2018

Cloudy conditions and a chance for lingering showers continue in
southeast Nebraska Friday night. Friday night will be the coolest
night of the season thus far, with temperatures ranging from about
35 to around 40 degrees. Frost will be a possibility overnight
Friday into Saturday morning, particularly in far northeast
Nebraska and west-central Iowa.

The forecast Saturday is a little less certain with variations in
model precipitation. While the European model (ecmwf) remains dry during the day
Saturday, both the Canadian and the GFS return chances for showers
generally south of I-80. Regardless, clouds may remain on Saturday
and temperatures will only be around 60.

The boundary will linger in the area and showers are expected once
again on Sunday. After that, confidence is low on continual
chances for showers or thunderstorms though the week with this
boundary lingering in the area and additional waves moving across
the area throughout the week.


Aviation...(for the 12z tafs through 12z Thursday morning)
issued at 624 am CDT Wed Sep 26 2018

VFR conditions are forecast through Thursday morning with only
scattered to broken high clouds expected. Winds will turn from
northwest to southwest by early afternoon, then south around 00z,
but speeds should remain near or less than 12kt. Low level wind
shear is expected after 06z as a southwest low level jet kicks up
to 45kt at fl020.


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