textproduct: Topeka

KEY MESSAGES

- Warmth builds this weekend into early next week, with potential for heat indices around or above 100 each day.

- A few low rain chances over the next week, especially towards the Nebraska border, but overall mostly dry until Wednesday/Thursday.

DISCUSSION

Issued at 157 PM CDT Fri Aug 7 2026

A sprawling mid/upper-level anticyclone over the Great Basin and Four Corners is amplifying and expanding eastward across the Rockies into the central and southern Plains through the weekend. This pattern favors warming and sporadic isolated storm chances across Kansas.

For this afternoon and tonight, a few weak boundaries appear in observations. The first is expected to remain south of the area, while the other is to our north across southern Nebraska. The broader environment remains warm and moist, but with significant capping in place, the likelihood of storms developing around our area is minimal. An MCS may develop in central Nebraska and push southeast, potentially clipping our far northeast late tonight into tomorrow morning as the low-level jet increases, but the latest model runs have grown increasingly pessimistic in this scenario playing out. Generally, a hot and dry forecast is favored through early next week as the core of the upper ridge shifts farther east over the central/southern Plains, reinforcing a hot air mass over much of Kansas while a surface boundary slowly meanders nearby.

Weak perturbations riding the northern periphery of the ridge and the lingering boundary will periodically bring low chances for showers and thunderstorms, mainly during the late afternoon and evening hours, particularly across north central and far northeast Kansas closer to the frontal zone. However, stronger capping and subsidence under the ridge suggest that storm coverage will be limited and spatially inconsistent, with many locations remaining dry for extended periods despite the presence of the boundary. Heat indices in the low 100s are once again likely for the area beginning tomorrow and lasting into next week.

Overall, the forecast remains characterized by episodic, mainly boundary-focused storm chances against a backdrop of increasingly oppressive heat as the ridge peaks over the central Plains.

AVIATION /18Z TAFS THROUGH 18Z SATURDAY/

Issued at 1203 PM CDT Fri Aug 7 2026

VFR at all TAF sites through the TAF period with southerly wind generally less than 10 knots and mostly clear sky.

TOP WATCHES/WARNINGS/ADVISORIES

None.