textproduct: Omaha/Valley

KEY MESSAGES

- Scattered showers and thunderstorms are possible through the remainder of the afternoon, with brief downpours, lightning, and funnel cloud or two all possible. - Warmer weather builds in Monday lasting through much of the week. Highs trend upwards with continued rain chances that could thwart extreme heat.

- Heat could be disrupted by stronger storms that will try to develop and move through the area Monday through Wednesday.

DISCUSSION

Issued at 1227 PM CDT Sun Jun 7 2026

Today and Tonight:

GOES satellite imagery this afternoon shows textured landscape of clouds draped across the Central and Northern Plains, spurred on by a weak cutoff low and it's associated height falls general convergence across the area. Zooming out a bit further, longwave troughing continues across the Pacific Northwest with a cold front continuing to exist up and down the Northern High Plains. Sounding profiles and SPC objective fields locally depict a generally uncapped environment, with pockets of deeper convection pulsing up and down therein while the potential/duration of any storm is limited by weak effective shear. SPC mesoanalysis also shows some increased values of non-supercell tornado parameter due to the ambient vorticity, sufficiently steep low-level lapse rates, and overall stretching potential of that vorticity. No tornadoes are expected to occur, but we do anticipate reports of funnels underneath some of the strengthening pulse convection over the course of the afternoon. Aside from the spurious convection, lighter rain is also expected to occur in a more widespread nature before they dissipate/shift off to the northeast along with the mid/upper closed low. Temperatures will only warm slightly to their peak in the upper 70s to lower 80s, making it a low point from which we will jump forward into a hotter forecast for the remainder of the week. Skies overnight will trend clearer as subsidence sets in behind the low, with the back edge of the clouds trying to usher in areas of fog, primarily across central and eastern Nebraska into Monday morning.

Monday through Wednesday:

The forecast hits a bit of a turning point Monday, as the mid/upper jet streak near the High Plains advances farther east -- not necessarily to induce weather directly over the area, but moreso to develop showers and storms to the west that move into the forecast area. As for Monday in particular, the aforementioned frontal boundary front the High Plains the day previous will push into north- central Nebraska into central South Dakota. The southern reaches of the front will bend farther to the south and west, connecting to a local surface low near the NE/KS/CO border. CAMs are generally on board with developing convection closer to the surface low and where the greatest instability will lie Monday afternoon, but they do also hint at storms trying to fire along the front in northeast Nebraska after 6 PM, but with sufficient, but less instability and effective shear. Those storms serve as the initial severe threat for the evening, with an eventual MCS trying to push into the area late/overnight Monday that would bring 50-60 mph winds through after midnight.

Aside from the storms, heat will also be of importance to the forecast, where areas to the southeast of the incoming cold front are forecast to hit high temperatures in the upper 80s to low 90s. Similar temperatures are forecast going through the middle of the work week, seeing a potential bump into the mid-to-upper 90s and near 100 degrees in far northeast Nebraska. The continuation of any heat will be conditional to potential storm and shower activity that is forecast through the week. We're not expecting a washout by any means, but a poorly-timed MCS that powers through the area would kill high temperatures for the day, leaving us a bit cautious with regards to issuing any heat headlines. The current forecast does carry areas of "major" heat risk Tuesday and Wednesday, before reducing to "moderate/minor" again Thursday onward.

Storm chances also continue to be of concern with the mid/upper features nudging a bit closer to the area Tuesday, and through/to the east of area Wednesday. Confidence in location/timing with these storm chances remain low, as the Monday evening/overnight convection will play a large role in defining what areas are allowed to recover, while outflows remain and serve as focal points for the next day's convection. With the abundance of instability and increasing mid/upper flow, severe storms are on the board both days.

Thursday and Beyond:

Temperatures trend downwards Thursday through Saturday, as the base of the upper trough continues its push east of the area while the remaining mid/upper flow flattens. Shortwaves continue to move through the flow though this period, keeping low-end chances for rain in the forecast, but most will be thankful for the cooldown incoming back to the low-to-mid 80s.

AVIATION /18Z TAFS THROUGH 18Z MONDAY/

Issued at 1219 PM CDT Sun Jun 7 2026

VFR to MVFR conditions are in place this afternoon with scattered showers and a few thunderstorms dotting the radar screen. These showers and storms are expected to last through the next 2-3 hours, with the western edge clearing KLNK first before shifting even farther east to avoid KOMA after 21z. Southeasterly winds are expected to continue through the afternoon with occasional gusts near 20 kts, while MVFR ceilings become increasingly hard to come by as we head into the evening. Overnight, winds will quiet down, clouds will try and clear until some fog/low stratus formation occurs after 06z. Fog chances are highest near KOFK into central Nebraska, with KLNK closer to the eastern edge of it. Any fog or lower ceilings (IFR or lower) should dissipate by 14z tomorrow morning, returning VFR conditions to the terminals.

OAX WATCHES/WARNINGS/ADVISORIES

NE...None. IA...None.