Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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192 FXUS63 KOAX 132326 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 526 PM CST Sat Jan 13 2018 .SHORT TERM...(Tonight through Tuesday) Issued at 254 PM CST Sat Jan 13 2018 The short term will have a couple of chance of snow, tonight then again tomorrow night, and then bitterly cold temperatures Monday night into Tuesday night. Fast moving clipper moving out of the northern Rockies was already spreading light snow into western South Dakota and extreme northwest Nebraska, and will move into the area tonight. Models are consistent with higher QPF/snow amounts across central NE, but 1-2" are still possible in southeast Nebraska, with up to an inch elsewhere. Winds remain at 10 knots or less so blowing snow not really an issue. Snow will be moving out of the area early Sunday morning in our southeastern counties. Right behind this first clipper, a second clipper and associated arctic front will move through the area Sunday afternoon through early Monday morning. The snow with that front will arrive in northeast Nebraska and northwest Iowa 3-6pm, then snow chances overspread the area and then push south into Kansas and Missouri by daybreak Monday. This system could bring up to an inch of snow with colder air quickly coming in behind. High temperatures ahead of the arctic front tomorrow do rebound in into the mid 20s to mid 30s, but highs Monday will mostly be in the single digits with brisk northwest winds. 1046mb arctic high settles into the area Monday night, which should allow temps to drop into the -5 to -15 range. Wind chill values Monday could range -20 to -25 north of a line from Columbus to Harlan. Wind chill values Monday night drop to -20 to -35, which lingers into Tuesday morning. Thus, will eventually need to issue wind chill advisories and warnings, but will wait for that until tomorrow. High temperatures Tuesday still only in the single digits above zero. Winds do decrease Tuesday night to either calm or less than 5 mph, but it will still be quite cold with lows from 0 to -8. Wind chill values still -15 to 20 into early Wednesday morning. .LONG TERM...(Wednesday through Saturday) Issued at 254 PM CST Sat Jan 13 2018 The period should be dry with moderating temperatures as an upper ridge builds across the Plains, then flattens with zonal flow ahead of the next big trough next weekend. Temps still cool in the 20s on Wednesday, but warming into the 30s and 40s Thursday through Saturday. There is another potentially strong closed low storm that will affect the region next Saturday night into Sunday, but that`s just beyond this forecast, and there remains a fair amount of model discrepancy that will need to be resolved. && .AVIATION...
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(For the 00Z TAFS through 00Z Sunday evening) Issued at 525 PM CST Sat Jan 13 2018 Light snow will spread across the area tonight with deteriorating conditions. Ceilings should drop to MVFR this evening, then ceilings and visibilities are expected to become IFR for several hours as the precipitation tracks from west to east through the area. MVFR conditions could continue through the rest of the day Sunday.
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&& .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && $$ SHORT TERM...DeWald LONG TERM...DeWald AVIATION...Miller

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