textproduct: Omaha/Valley

KEY MESSAGES

- 20 to 40% chance for storms Tuesday afternoon and evening. Storms could be severe with large hail and damaging winds.

- Quiet and pleasant weather Wednesday and Thursday with highs in the lower 80s.

- A warming trend begins on Friday with the hottest temperatures reaching the lower 90s by this weekend. A low chance of storms is expected also.

DISCUSSION

Issued at 1111 PM CDT Mon Aug 24 2026

It was a quiet Monday afternoon across the region and that relative quiet should continue into tonight. The only exception may be a brief shower or storm over northeast Nebraska after midnight. A decaying area of storms to our northwest may persist into our area, but an increasingly stable airmass ahead of it should limit its duration. Other than this, expect some clouds as temperatures cool into the middle 60s by morning.

Tuesday sees a shortwave trough move across the northern Plains. This will result in the development of storms along a weak front over central Nebraska. These storms should reach our western border by mid-afternoon before spreading southeast with time into Tuesday evening. Rain chances have decreased since the previous forecast as the latest model guidance keeps the bulk of the storms over central Nebraska and moves them into north- central Kansas. In this scenario, more limited rain chances can be anticipated, alongside a more conditional severe weather threat. That said, the strongest storms may still produce large hail and damaging winds. Temperatures reach the middle 80s during the afternoon. Thunderstorm chances gradually lessen Tuesday evening as the trough exits the region and instability wanes.

Wednesday and Thursday end up being two pleasant days to look forward to. A cold front behind Tuesday's system drops temperatures into the lower 80s with quiet weather both days. Mostly sunny skies further adds to the enjoyable change. This change is short-lived as a warming trend takes over on Friday. Temperatures climb through the 80s towards the lower 90s by this weekend as the southwestern US ridge builds towards the northeast. It remains humid with passing weather disturbances to the north of the region. This should support the return of at least a low chance of rain, but with increased temperatures comes greater near-surface stability to overcome. Hopefully, at least some rain brings periodic relief from the heat.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 541 AM CDT Tue Aug 25 2026

VFR conditions prevail through the forecast period. Winds will be light and variable through the day and into this evening. Showers have developed across central Nebraska early this morning but have been slow to move east/southeast toward eastern Nebraska thus far. There is a 15-20% chance of a few light sprinkles/showers at KLNK between 14Z and 16Z. A few light showers or isolated thunderstorms (15-20% chance) will be possible across eastern Nebraska after 18Z, potentially with some minor impacts to KOFK and KLNK. These may struggle initially to make it to KOMA. An additional chance (15-20%)of an isolated shower or thunderstorm is possible between 08Z and 10Z at KLNK. Confidence in areal coverage and timing is fairly low at this time for precipitation and potential impacts at the terminals.

OAX WATCHES/WARNINGS/ADVISORIES

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