Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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185 FXUS63 KOAX 240439 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 1139 PM CDT Wed Aug 23 2017 .SHORT TERM...(Tonight through Saturday) Issued at 312 PM CDT Wed Aug 23 2017 Main forecast concern is chances for a few isolated thunderstorms late tonight with increasing chances as we head into the weekend. Warm air advection will continue to increase tonight with increasing southerly low-level flow. This could spark a few isolated thunderstorms across our far north/northeast counties as nose of low- level jet increases overnight. Latest CAMs seem to have a good handle on this, with activity skirting over our northeast counties after 06Z. A fast moving mid-level shortwave will drift east across the region on Friday giving yet another chance for showers and thunderstorms as convection drifts east off the High Plains. A stronger shortwave is progged to move across South Dakota dragging a frontal boundary across the region Saturday into Sunday. Confidence on exactly how this will all play out is somewhat low but forecast consistency remains in tact. .LONG TERM...(Saturday night through Wednesday) Issued at 312 PM CDT Wed Aug 23 2017 The weekend shortwave moving through SD will deepen as a stronger trough moving southeast out of central Canada moves into the states. Models eventually close this wave off and linger it across Iowa keeping our temperatures on the cooler side into next week. && .AVIATION...(For the 06Z TAFS through 06Z Thursday night) Issued at 1135 PM CDT Wed Aug 23 2017 VFR conditions will prevail through the period. Eastern Nebraska is expected to remain on the western edge of surface high pressure extending from the upper Great Lakes into the Ozark plateau. Some mid and high clouds likely north and east of TAF sites in area of warm advection through 18Z. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && $$ SHORT TERM...Kern LONG TERM...Kern AVIATION...Fobert

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