Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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937 FXUS63 KOAX 250851 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 351 AM CDT Tue Apr 25 2017 .SHORT TERM...
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(Today through Thursday) Issued at 339 AM CDT Tue Apr 25 2017 Scattered showers with a few isolated thunderstorms will continue to spread over portions of the forecast area this morning ahead of an approaching upper-level shortwave trough over central Wyoming. A surface cold front has pushed through a majority of the forecast area this morning and is expected to extend just to our southeast across northeast Kansas and southwest Iowa through a good portion of the day as surface low pressure along the Kansas/Oklahoma border works its way slowly northeast along the front. Additional widespread showers are expected through the day ahead of the upper wave as it pushes east across South Dakota. In addition, strong cold air advection will continue today with highs in our northern counties only rising a few degrees with highs forecast in the mid to upper 40s. Precipitation should end from northwest to southeast Wednesday as the upper-level trough axis finally shifts east of the area. A few snowflakes could mix in with the rain along the South Dakota border early Wednesday morning but no accumulation is anticipated. Have continued mention of patchy frost in our northern counties Thursday morning with lows in the low 30s. Will continue to monitor for any headlines that may be needed. .LONG TERM...(Thursday night through Monday) Issued at 339 AM CDT Tue Apr 25 2017 Dry conditions are expected Thursday before a series of upper troughs swing through the region through the weekend. Significant differences continue with the medium range models with the 00z GFS giving the area significant precipitation Friday while the 00z ECMWF remains fairly light with its QPF by keeping the strongest forcing to our south. Heading into the weekend, the pattern will remain cool as a deepening mid/upper level trough digs across the Four Corners region and quickly moves into eastern Nebraska by Sunday. Continued precipitation is expected with this system with cold air working south. Some mix with light snow is possible before the system exits to the east on Monday.
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&& .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...Kern LONG TERM...Kern AVIATION...Miller

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