Area Forecast Discussion
Issued by NWS Omaha/Valley, NE
Issued by NWS Omaha/Valley, NE
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985 FXUS63 KOAX 170521 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 1121 PM CST Sun Nov 16 2025 .KEY MESSAGES... - 20-50% chance of rain Monday, alongside breezy winds out of the southeast gusting to 20-35 mph. - Another storm system will move into the region Thursday through Friday, bringing a 20-50% chance for rain and possibly some snow heading into the weekend. && .DISCUSSION... Issued at 402 PM CST Sun Nov 16 2025 Today: Water vapor imagery this afternoon shows a compact mid/upper low spinning into the Four Corners Region, amplifying ridging to its east over the High Plains while northwesterly flow spills eastward from there. Drilling down to the surface, recent hand analysis places a surface warm front just to the west of the forecast area, extending from the northern Nebraska Panhandle to the southeast towards north-central Kansas. With the forecast area being near enough to that front and west of the high pressure to the east, we`ve enjoyed light southeasterly winds and just enough sunshine to make the temperatures in the 50s today feel just a touch warmer. Those southeasterly winds are set to continue into the overnight hours, and should help keep tonight warmer in the mid-toupper 30s compared to the previous. Monday and Beyond: By early Monday, the aforementioned Four Corners low will have ejected northeastward into the Wyoming/Colorado area, with a surface low centered over extreme northwestern Kansas. Despite the system generally deamplifying as it leaves the Rocky Mountain front range, a potent warm air advective regime will be set over the forecast area, quickly clouding the skies and providing forcing for ascent to go with the falling mid-level heights. The main snag that we will run into will be the wildly varying low-level moisture profile. There is still considerable spread in terms of how much dry the air will be in the low- levels, but regardless of the model, initial echoes on radar will fail to reach the ground initially -- gradually working away the dryness for areas of northeast Nebraska and Iowa to see around 0.05" of rain. Models continue to hold the warmer thermal profile, with Nebraska struggling to see 850 temperatures below freezing, let alone having any realistic chance to see any snow. Monday`s gust potential has held steady, with gusts of 25-35 mph forecast underneath the cloud cover. Rain chances generally begin by noon (10-20%), peak from 7p-12a (25-40% chance), and taper off overnight and transitioning into areas of drizzle. By Tuesday, we`ll have the Monday system in the rear-view mirror while the mid/upper pattern transitions the remaining ridge axis over the area, limiting the amount of cooling behind the cold front. Highs are expected to stay in the upper 40s to well into the 50s, despite northerly winds. For the remainder of the work week, most of the forcing for ascent will be focused south of the forecast area, only glancing far southeast Nebraska late Thursday with our first chance for meaningful precipitation arriving Friday as another system pivots from the Intermountain West. Significant spread exists by this point in regards to the weather system`s placement going into the weekend, but ensemble members across the board do give us a much better shot at seeing some accumulating snow compared to Monday. && .AVIATION /06Z TAFS THROUGH 06Z TUESDAY/... Issued at 1121 PM CST Sun Nov 16 2025 VFR conditions expected overnight with passing mid clouds. MVFR ceilings will start to push in Monday morning with ceilings of 2000-3000 ft. In addition, a few light showers will pass through at times in the afternoon, with guidance hinting that higher chances will be during the evening. A few pieces of guidance also suggest potential for some isolated rumbles of thunder, mainly Monday evening, but confidence in that happening is quite low. Ceilings will stick around through the evening at OMA and OFK, but are currently expected to scatter out at LNK. Otherwise, winds will remain southeasterly, generally at or below 10 kts overnight, before picking up Monday morning, with gusts of 20-25 kts through the day. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && $$ DISCUSSION...Petersen AVIATION...CA