textproduct: Omaha/Valley

KEY MESSAGES

- Temperatures continue to warm for Sunday and Monday.

- A few showers and thunderstorms are possible Sunday evening in northeast Nebraska. Some storms may be strong or severe with a threat of 2" hail.

- A shift in the pattern brings cooler temperatures and daily chances of showers/thunderstorm activity to the region beginning Wednesday.

DISCUSSION

Issued at 1207 PM CDT Sun May 24 2026

Today and Tonight...

Southerly flow along with rising midlevel heights will continue to draw warmer air into the Central Plains today. Temperatures have already climbed into the mid and upper 70s by noon, under mostly sunny skies. Highs this afternoon will reach the into the 80s.

A weak shortwave will ripple into the mid CONUS this afternoon, bringing the potential for a few storms. Sunny skies will allow 500- 1000 J/kg of CAPE to build into northeast Nebraska, in addition to 30-40 kts of bulk shear and steepening lapse rates. As of noon today, CAMs are beginning to come into better agreement on developing a few isolated storms this afternoon and evening. If storms are able to develop, a few of them may be capable of large hail and strong winds. While LCLs will remain fairly high, a tornado or two can't be completely ruled out, with notable curvature in hodographs.

Any storms that may develop are expected to clear the forecast area by midnight, with quiet weather prevailing through the overnight hours. Temperatures will remain mild overnight, with lows falling into the upper 50s and low 60s.

Monday and Tuesday...

Temperatures continue to climb into the mid and upper 80s Monday and Tuesday, as a ridge builds into the central CONUS, and a low digs through the west coast. Another round of showers and storms may develop across a lingering boundary Monday afternoon and evening (20- 30%), but any severe convection will likely be stunted by weak shear and a lack of strong forcing for ascent.

Wednesday and Beyond...

Low pressure continues to churn over the west coast through midweek, before shifting northeast and weakening by the weekend. Gulf moisture will stream into the nation's midsection Wednesday through Saturday, providing numerous chances for much needed rainfall across the forecast area. Models indicate PWATs could rise to the 90th percentile or higher of climatology, raising the possibility for heavy rainfall at times. Temperatures will cool into the end of the week, dipping into the mid and upper 70s.

AVIATION /18Z TAFS THROUGH 18Z MONDAY/

Issued at 1207 PM CDT Sun May 24 2026

VFR conditions will prevail through the period. Southerly winds will increase this afternoon, with gusts up to 20 to 30 kts. A few isolated strong to severe storms will be possible this afternoon and evening. The best chance for storms will be across far northeast Nebraska, potentially effecting KOFK between 02-05Z. Storms will exit the forecast area by 06Z tonight, with LLWS developing across the parts of the area. LLWS looks likely at KOFK between 05-12Z Monday morning. KOMA and KLNK will be on the southeastern fringe of LLWS, with the best chance for impacts between 06-12Z.

OAX WATCHES/WARNINGS/ADVISORIES

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