Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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000 FXUS63 KOAX 170903 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 403 AM CDT Sun Sep 17 2017 .SHORT TERM...
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(Today through Tuesday) Issued at 300 AM CDT Sun Sep 17 2017 Upper level short wave trough is lifting out negatively across the Dakotas. This has allowed the surface cold front to move southeast and at 07Z extended from eastern Iowa to southeast Kansas. The front is forecast to stall out over southern Kansas and then lift northward as a warm front tonight into Monday. Isentropic lift at 305K and 310K will occur over eastern Nebraska starting mid-day today and increase clouds across the area during the afternoon. Continued lift across the front will allow for thunderstorms to develop after 00-03Z tonight across southeast Nebraska and then spread northward during the night. Thunderstorm chances continue during the day Monday until later in the afternoon and evening. Tuesday is forecast to be dry as the weather system moves eastward out of the area. .LONG TERM...(Tuesday night through Saturday) Issued at 300 AM CDT Sun Sep 17 2017 Large upper level trough moves into the northern and central Rockies on Wednesday. One cold front will move across the area Tuesday night into Wednesday. A chance of thunderstorms is possible over northeast Nebraska on Tuesday night into Wednesday morning. Then upper level shortwave troughs will begin rotaing around longwave trough out in the Rockies. This will allow low pressure to develop over the central high plains Thursday and Friday. Surface front extending from the central Dakotas southward to low is expected to gradually move eastward through next weekend. Shower and thunderstorm chances increase over eastern Nebraska and southwest Iowa beginning Friday and continue through the weekend.
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&& .AVIATION...(For the 06Z TAFS through 06Z Sunday night) Issued at 1145 PM CDT Sat Sep 16 2017 TSRA will be mainly south of KLNK and KOMA but could linger through 06z to 07z in the vicinity. Then look for decreasing cloudiness overnight. VFR conditions should prevail much of Sunday, with TSRA chances increasing in the late afternoon or evening. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && $$ SHORT TERM...Smith LONG TERM...Smith AVIATION...Miller is the U.S. government's official web portal to all federal, state and local government web resources and services.