textproduct: Omaha/Valley

KEY MESSAGES

- 20 to 30% chance for storms this evening. A storm or two could be severe with large hail and damaging winds if they do occur.

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

- Periodic storm chances and warmer temperatures return Friday, with the hottest temperatures reaching the lower 90s by this weekend.

DISCUSSION

Issued at 1223 PM CDT Tue Aug 25 2026

A decaying MCS struggled to move eastward out of central Nebraska this morning. A few raindrops made it to the surface, however most of the forecast area remained dry. By noon, temperatures had reached the mid 70s under cloudy skies. Highs this afternoon are expected to top out near climate normals, in the low to mid 80s.

A weak cold front draped from south-central Nebraska through northwest Iowa could become the focus point for redevelopment of convection, as a shortwave moves across the Central Plains this afternoon. Current trends in the majority of the CAMs keep storm development well to our west, over western Nebraska. However, a few still want to initiate storms along the boundary near northeast Nebraska late this afternoon, and bring them southeast across eastern Nebraska this evening. While the first scenario appears more likely, any storms that do manage to develop in our area would be fueled by 1000-2500 J/kg of instability with 30-40kts of shear sustaining updrafts, making them capable of producing large hail and damaging winds.

Low pressure will settle southeast into the Great Lakes, drawing the cold front across the region and bringing temperatures down into the low 80s for Wednesday and Thursday. The cooler temperatures will be accompanied by pleasant, dry weather as surface high pressure settles in to the Plains.

Warmer temperatures return as an upper ridge drifts into the central CONUS, Friday. Highs will return to the upper 80s and low 90s by the weekend and remain there through early next week. A handful of ridge- riding shortwaves will bring periodic chances for showers and storms.

AVIATION /00Z TAFS THROUGH 00Z THURSDAY/

Issued at 614 PM CDT Tue Aug 25 2026

VFR conditions are expected to persist through the next 24 hours, as northwesterly winds have sunk southward. Speeds are trending downward, with largely northwesterly winds (could be variable at times) at less than 5 kts settle in. Lingering humid areas could turn foggy early Wednesday, southeast of KOMA/KLNK and closer the to the NE/MO/IA mutual borders. Otherwise clearing skies tomorrow with winds picking up a bit out of the northwest with gusts of 20 kts near KOFK after 16z.

OAX WATCHES/WARNINGS/ADVISORIES

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