Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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706 FXUS63 KOAX 182048 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 348 PM CDT Wed Apr 18 2018 .SHORT TERM...
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(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.
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&& .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...
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NE...None. IA...None.
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&& $$ SHORT TERM...Barjenbruch LONG TERM...Barjenbruch AVIATION...HD

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