072 FXUS63 KOAX 010538 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 1138 PM CST Sat Feb 28 2026 .KEY MESSAGES... - A wintry system arrives Sunday/Monday, bringing chances for snow, ice, and drizzle to areas mainly along and south of I-80. - Temperatures begin trending upwards Monday afternoon through much of the week, keeping additional precipitation as rain. - A another system arrives Friday into early Saturday, with rain expected to continue as the primary precipitation type. && .DISCUSSION... Issued at 1134 PM CST Sat Feb 28 2026 Tonight through Monday Morning: Water vapor imagery this evening shows weak troughing centered over the eastern third of the CONUS, while zonal to northwesterly flow pours in from the west over the western two-thirds. High pressure continues to keep its hold over the northern half of the Great Plains, with northeasterly winds ushering in temperatures in the 20s across the area, that are set to further drop into the upper teens and lower 20s at their lowest point overnight. Though current dewpoints are near the forecast overnight low temperatures, dry air advection will counteract any cooling to reduce any fog chances to nearly zero. By sunrise tomorrow, a swath of warm air advection and incoming positive vorticity advection will kick start over the Central and Southern High Plains and will serve as the primary driver of snow/ice that move through southeast Nebraska and southern Iowa during the afternoon and evening hours. We find ourselves on the northern end of the precipitation, with lower coverage due to the limited northern extent of the shortwave and thus have lower expectations for any snow/ice accumulations. Overall QPF with the latest runs of the models has increased, but a messy precipitation type will cut down on what actually piles up at the surface, as that WAA advection strengthens to push temps to freezing and partially melt snow aloft. Expect sub-ten-to-one snow ratios where you do see snow, with near freezing to just below temperatures (that only cool overnight), making any ice and re-freezing of melted rain/snow/ice the biggest thing to be ready for. The locations expected to see some ice impacts (50-70% chance) have a Winter Weather Advisory out for them, while any further expansion depending on whether or not amounts trend upwards. As the main shield of rain/wintry mix shuffles to the south and east of the area late Sunday, marginal lift will continue into the overnight and early morning hours of Monday, resulting in areas of freezing drizzle. Latest runs of the short-term models have disparate coverage for the drizzle, lowering confidence in it occurring (10-30% chance). Nonetheless, the limited coverage, duration, and light winds should mean accumulations will be inefficient and limit impacts to the Monday morning commute. Monday and Beyond: As the morning rounds out into the afternoon, expect the dreary conditions to continue through the day with any slickness melting thanks to high temperatures that push into the 40s in anticipation of a shortwave trough approaching from the west. As this system reaches the Central High Plains just to the east of the area, it will meander southeast and help keep prolonged precipitation forecast for the area through Wednesday. As it lingers, most of the forecast area should see a good quarter to half in of rainfall that would go a long way to help us with recent dryness. Temperatures trend upwards through this stretch with the prolonged southerly return flow ahead of the system, peaking Thursday as a break in the clouds and light rain chances leave us with sunny skies and a thermal ridge over the area. Heading into the weekend, model divergence increases, but we do have good odds of seeing more beneficial precipitation headed for us as another trough sheds a shortwave through the area before retrograding to southern California by Saturday afternoon. && .AVIATION /06Z TAFS THROUGH 06Z MONDAY/... Issued at 1122 PM CST Sat Feb 28 2026 VFR conditions and east winds begin the TAF period. Clouds increase overnight ahead of an approaching weather system. Ceilings will begin to gradually decrease throughout the afternoon and evening on Sunday due to this weather system, though will continue to be VFR to start. Any precipitation from this weather system is expected to remain close to the Kansas/Missouri border. Light snow is expected at LNK during the afternoon with MVFR ceiling and visibility reductions likely. There is low confidence on any meaningful snow reaching OMA with any snow at OFK unlikely. By Sunday evening, MVFR and IFR ceilings begin to build north across the area as snow exits. Most terminals are expected to be impacted by category reductions by the end of the TAF period. Winds remain easterly through the forecast. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...Winter Weather Advisory from 3 PM Sunday to 9 AM CST Monday for NEZ091>093. IA...None. && $$ DISCUSSION...Petersen AVIATION...Chehak