Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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FXUS63 KOAX 182048
AFDOAX

Area Forecast Discussion
National Weather Service Omaha/Valley NE
348 PM CDT Wed Apr 18 2018

.SHORT TERM...(Tonight through Saturday)
Issued at 253 PM CDT Wed Apr 18 2018

A few flurries and sprinkles remained over western IA and far
eastern NE on Wednesday afternoon as the compact storm system of
this morning continued to steadily progress east away from the
forecast area. A secondary vorticity max will drop south this
evening with a few more flurries and additional low cloud cover.

Clouds will diminish around sunrise or through Thursday morning as
surface high pressure builds toward northeast Nebraska. Winds will
become light so anticipate a cool morning especially in areas with
the fresh snow cover. If clouds clear out sooner, can expect to
drop several degrees further but at this time believe clouds will
hold. Similarly, Thursday high temperatures will depend on the
cloud cover clearing the area (which looks to be a high
probability by late morning) to allow the April sunshine to do its
work and warm the area up nicely other than the areas with deepest
snow cover.

Thursday night into Friday will see an increase in mid and high
level cloud cover as a storm system deepens and moves toward the
OK Panhandle. The local area will only experience a glancing
impact from this storm, primarily in the form of extra cloud cover
and perhaps rain showers mainly over the west and southwestern
portions of the forecast area. The best chance for precipitation
currently appears to come on Friday evening through Saturday
morning, but do not expect this to be a widespread or persistent
rain event...but if precipitation does fall it appears likely to
fall as liquid rain rather than snow. Temperatures will be a bit
cooler on Saturday in the 50s given the widespread cloud cover.

.LONG TERM...(Saturday night through Wednesday)
Issued at 253 PM CDT Wed Apr 18 2018

The southern storm system moves east on Sunday, but may leave
cloud cover in the area even after it departs. A fairly strong
cold front crosses the area with a Montana source region on
Tuesday, bringing a shift to northerly winds and a bit of a cool
down in addition to some low-end precipitation chances. It should
also help to scour out the remaining cloud cover for a day or two
until it returns with isentropic ascent and moisture advection
across the Plains by late Wednesday.

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1223 PM CDT Wed Apr 18 2018

MVFR conditions at all sites trending toward VFR this evening.
Light snow showers will affect KOFK and KOMA today, ending at OFK
by 20z however light snow may persist at KOMA through the
afternoon. A brisk 15 knot north wind could gust over as 25 knots
at all sites. Gusty winds will die down by about 03z. VFR
conditions move into KLNK by 22z and KOFK and KOMA by 03z.
Potential also exists for MVFR to IFR conditions affecting KOFK
and KOMA overnight after 04z with clouds scattering and becoming
VFR toward daybreak.


&&

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

$$

SHORT TERM...Barjenbruch
LONG TERM...Barjenbruch
AVIATION...HD



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