textproduct: Omaha/Valley

KEY MESSAGES

- Calm and quiet conditions Friday, with afternoon highs in the mid 80s.

- A low chance for thunderstorms return Friday night and early Saturday morning across northeast Nebraska and western Iowa.

- Temperatures increase this weekend, with highs in the mid to upper 90s and heat index values approaching 100. Periodic thunderstorm chances and above-normal temperatures continue into next week.

DISCUSSION

Issued at 1059 PM CDT Thu Aug 27 2026

A damaging thunderstorm complex is ongoing across southern Nebraska and northern Kansas late this evening. High cirrus from this system 200 miles to our west may partially obscure tonight's lunar eclipse. Beyond this, there is a low chance for showers or an isolated thunderstorm tonight, but most remain dry. Temperatures fall into the low 60s by Friday morning with quiet weather conditions. Our next weather system begins to take shape to our west during Friday afternoon. This will cause south winds to slowly increase throughout the day as temperatures warm into the mid 80s. A shortwave trough glances the area to the north late Friday night into early Saturday. The better thunderstorm chances remain focused north of the area, but scattered showers or thunderstorms may dip into northeast Nebraska and western Iowa as this system passes.

This weekend sees temperatures build. A combination of the Southwest ridge and troughing to the north will not only fuel warmer temperatures, but also result in breezy conditions. It is expected that temperatures on Saturday and Sunday push into the low to mid 90s across most of the area. It will be humid as well, resulting in heat index values approaching 100. With any weather disturbances passing far to the north of the area and hot temperatures in place, thunderstorm chances are unlikely. Even if thunderstorms approach the area, increasing stability under the ridge should limit their persistence.

Heading into next week, the ridge will begin to flatten. This helps lower temperatures back into the upper 80s to low 90s, though this remains above normal. With more zonal upper-level winds returning to the northern Plains, periodic thunderstorm chances return to the forecast. The best chance for thunderstorms will primarily be focused during the evening and overnight hours.

AVIATION /12Z TAFS THROUGH 12Z SATURDAY/

Issued at 553 AM CDT Fri Aug 28 2026

A line of weak showers and storms is crossing the Missouri River into southwest Iowa this morning. Once that clears, expect mostly clear skies today with winds increasing out of the south going into this afternoon. We'll see winds weaken around 00Z before increasing again starting around 05Z with gusts to 20-25kt. A few showers and storms will again be possible overnight tonight north near the Nebraska-South Dakota state line, staying north of the terminals. Shower/storm chances of around 30-40%.

OAX WATCHES/WARNINGS/ADVISORIES

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