Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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000 FXUS63 KOAX 050539 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 1139 PM CST Sun Dec 4 2016 .SHORT TERM...(tonight through Wednesday) Issued at 245 PM CST Sun Dec 4 2016 Warmer air has started to spread back into the area this afternoon on the backside of the upper trough now moving into the mid Mississippi Valley. The warmer temperatures and full sunshine today has eroded a good part of the snow field located over parts of southeast Nebraska from yesterdays event. Warm advection is expected to continue across the area tonight into Monday in advance of a cold front that will usher in a blast of arctic air by Wednesday. Latest models have the cold front moving through the area Monday afternoon with cold air spreading in behind the front on gusty northwest winds through Wednesday. An upper trough moving out of the northern Rockies will bring another chance of snow to mainly southern parts of the area on Wednesday. Southeast Nebraska will have the best chance of snow with amounts of 1-2 inches possible near the Kansas border decreasing to less than an inch north toward Lincoln and Omaha. The main surge of arctic air will then follow behind the upper trough on Wednesday night and Thursday. .LONG TERM...(Wednesday night through Sunday) Issued at 245 PM CST Sun Dec 4 2016 The arctic air will be the main story in the extended period and is expected to be over the area from Wednesday night into Friday before some slight warming returns for the weekend as upper flow becomes more zonal. The combination of warm advection and a weak short wave will bring another chance of some light snow to parts of the area Friday night into Saturday. && .AVIATION...
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(For the 06Z TAFS through 06Z Monday night) Issued at 1137 PM CST Sun Dec 4 2016 Latest model guidance remains consistent in indicating that a 40-50 kt southwest LLJ will migrate across the forecast area overnight into early Monday with LLWS criteria being met at all three TAF locations. Otherwise, mid and high-level cloudiness will increase through the forecast period with a cold front moving through eastern Nebraska Monday afternoon into evening. Gusty south winds ahead of the front will veer to west and then northwest with its passage.
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&& .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && $$ SHORT TERM...Fobert LONG TERM...Fobert AVIATION...Mead

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