Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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FXUS63 KOAX 242351

Area Forecast Discussion
National Weather Service Omaha/Valley NE
651 PM CDT Mon Apr 24 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

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


.AVIATION...(For the 00Z TAFS through 00Z Tuesday evening)
Issued at 630 PM CDT Mon Apr 24 2017

Latest sfc obs revealing a cold front from about w-cntrl MN to
swrn Neb. Expect wind shift to NW at KOFK within the next few
hours. appears that the prevailing winds at
KOMA/KLNK will remain southerly as the bndry is expected to stall
around midnight just N/NW of the TAF site. VFR until Tues aftn
when stalled bndry finally pushes south and conditions deteriorate




LONG TERM...Fobert
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