Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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000
FXUS63 KOAX 250620 AAA
AFDOAX

Area Forecast Discussion...UPDATED
National Weather Service Omaha/Valley NE
120 AM CDT Tue Apr 25 2017

.SHORT TERM...(Tonight through Thursday)
Issued at 300 PM CDT Mon Apr 24 2017

Wet and cold conditions will be moving into the area during the
period.

At 19Z a cold front curved from low pressure over northeast South
Dakota into north central and northwest Nebraska with a surface
trough located over central Nebraska. This system will move slowly
southeast tonight and be over southeast Nebraska and western Iowa
on Tuesday. Low pressure over southeast Colorado will work its
way slowly northeast along the front tonight and Tuesday.
Scattered showers and isolated thunderstorms are expected to
develop across the area late tonight as vertical motion fields
increase in advance of an upper level wave moving out of the
central Rockies.

More widespread showers and rain is indicated for Tuesday
especially across northern parts of the area as overrunning
develops across the frontal boundary laying across southeast
Nebraska and western Iowa and additional weak wave energy moves
across the region. Rain will gradually diminish and move southeast
Tuesday night as the cold front works slowly south and east of
the area with the better forcing also shifting to the south and
northeast. Some lingering showers are possible yet on Wednesday as
the main upper trough moves through the area with rain ending by
Wednesday evening in the far southeast.

Temperatures will be turning colder during the period with some
chance of frost Thursday morning as weak high pressure moves into
the area. Frost potential will depend on how much clearing is able
to develop and how long areas experience a lack of cloud cover.

.LONG TERM...(Thursday night through Monday)
Issued at 300 PM CDT Mon Apr 24 2017

Pattern looks to remain on the cold and wet side through the
period as additional strong upper waves develop and move across
the region. Models differ a bit however on timing and track of the
primary systems so forecast confidence on the lower end at this
time.

&&

.AVIATION...(For the 06Z TAFS through 06Z Tuesday night)
Issued at 120 AM CDT Tue Apr 25 2017

Cold front had moved through KLNK prior to 06Z and was moving
through KOMA at that time as well. Front should continue to push
south and east overnight...then may stall. Expect deteriorating
conditions at all three sites later today, at least to the MVFR
category and possibly lower.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...None.
IA...None.
&&

$$

SHORT TERM...Fobert
LONG TERM...Fobert
AVIATION...Miller


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