Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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000 FXUS63 KOAX 102120 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 320 PM CST Sun Dec 10 2017 .SHORT TERM...(Tonight through Wednesday) Issued at 320 PM CST Sun Dec 10 2017 Large scale flow over the CONUS will be stagnant over the next several days with mean ridging west/trof east. However, a series of of shortwaves dropping out of Canada into the northern/central Plains will be the only one to bring a threat for precip to the region Monday afternoon. Cold air advection spills into the region tonight/Monday as a clipper-type surface low digs southward through the upper midwest into the mid MS valley. Models in agreement that is where the bulk of precip activity will occur. It does appear though a sliver of the northern CWA may see a drop or two Monday afternoon. The next shortwave moving through on Wednesday drags another cold front with it. However, the models are favoring areas well to the east of the CWA for precip activity. Cold conditions Monday-Thursday morning with highs topping out generally in the low/mid 40s...overnight lows in the 20s. .LONG TERM...(Wednesday night through Sunday) Issued at 320 PM CST Sun Dec 10 2017 Models prog a bit more progressing pattern heading into next weekend. However, only a small chance for seeing any precip on Saturday morning. Well above normal temps expected in the extended periods with highs generally in the mid/upper 40s and lows in the mid 20s. && .AVIATION...(For the 18Z TAFS through 18Z Monday afternoon) Issued at 1131 AM CST Sun Dec 10 2017 VFR conditions are forecast through Monday morning. Northwest winds gusting to 25kt at times will decrease to less than 10kt before 00Z, then turn to southwest overnight. Strong northwest low level jet will develop overnight ahead of a cold front scheduled to arrive Monday morning. Surface winds will turn to northwest around 10kt, but low level wind shear is likely from 06Z through 16Z when 50kt northwest winds at FL020 develop. Surface winds will increase by mid Monday morning, averaging northwest 20 to 30kt before 18Z, but a further increase in speeds is likely just after the TAF period. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && $$ SHORT TERM...DEE LONG TERM...DEE AVIATION...Dergan is the U.S. government's official web portal to all federal, state and local government web resources and services.