textproduct: Omaha/Valley

KEY MESSAGES

- Temperatures will be near normal through Tuesday with dry conditions.

- Thunderstorm chances return to northeast Nebraska late Tuesday night, with better chances across the region Wednesday night into Thursday and Thursday night into Friday.

- A prolonged period of hot and humid weather is expected starting this weekend into next week.

DISCUSSION

Issued at 1150 AM CDT Mon Jul 6 2026

Quiet weather today with eastern Nebraska and southwest Iowa settled under a southwestern lobe of high pressure stemming from a broader anticyclone over eastern Canada. Skies are mostly clear and temperatures are seasonably warm with highs in the upper 80s to mid 90s across our area. The upper-level pattern shows a ridge building northeastward out of the Four Corners region, while troughing over the Lower-Mississippi and Ohio River Valleys leads to storms over the East Coast and Southeast.

High pressure and the building ridge generating subsidence over our area will inhibit any storm activity today and tomorrow. The surface high keeps the low-level jet to our west, forcing any overnight storm activity north and west of our area. Temperatures will stay warm into midweek with a very gradual warming trend. Expect another chance for patchy, shallow fog development overnight tonight into early Tuesday with light winds and humid conditions.

Storms will not be kept at bay too long, though. The ridge breaks down late Tuesday into Wednesday, creating more zonal flow across our area and forcing the surface high back east. This will bring the low-level jet back into eastern Nebraska, advecting moisture back up from the Gulf. With this in place, shortwaves will again generate periods of showers and storms, starting late Tuesday into early Wednesday and repeating the evening and overnight periods Wednesday night and Thursday night. We'll also see an increase in humidity with dew points rising back into the low 70s. This will bring max heat indices back up into the mid-to-upper 90s on Wednesday.

Wednesday night storms will bring a frontal boundary south for Thursday, oriented west to east across our area. Milder, drier conditions will be expected north of this boundary, while hot and humid conditions persist to the south. This boundary will act as a focus for additional showers and storm chances Thursday evening into the overnight hours.

Storms Thursday night into early Friday bring the boundary farther south potentially as far south as northeast Kansas. As this occurs, a more longwave trough shifts east into our area providing forcing for showers and storm chances through much of the day on Friday. These both combine for a milder day with occasional shower and storm chances. Highs on Friday generally only get up into the mid 80s.

Milder weather doesn't last for long, though, as long-range guidance is in good agreement on a strong ridge building over the Rockies going into the weekend and shifting eastward over our area Sunday into Monday. This likely brings back dangerously hot and humid conditions with heat indices rising back above 100 degrees starting Sunday.

AVIATION /18Z TAFS THROUGH 18Z TUESDAY/

Issued at 1150 AM CDT Mon Jul 6 2026

Clear skies today with winds out of the south or southeast. Light winds again tonight could promote chances for more areas of fog development, especially near river and creeks and over agricultural fields. Confidence is low in any significant fog development at the terminals, with only a 20% chance of fog lowering vis below 4SM.

OAX WATCHES/WARNINGS/ADVISORIES

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