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Number of 90° days continue to add up this week

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MADISON (WKOW) - The long-lived stretch of hot weather continues with many more days in the 90s this week.

The heat dome is building over the Upper Midwest causing temps to soar.

The jet stream, made up of fast-moving winds in the upper levels of the atmosphere, steer temperature patterns.

Our flow continues out of the Southwest, bringing hot air from the desert.

Jet stream set up

Being locked in this pattern since late June has allowed the number of 90° days to tally up. So far we're up to three and will see several more before heading into the weekend.

A front moves closer to the area sparking off a few more scattered pop-up showers and storms this afternoon and evening, but not everyone will get them.

Front moving in triggering pop-up storms

Hot spots could pick up a quarter to a half inch of rain.

Pop-up storms will drop a quarter to a half inch for hot spots

Otherwise, it'll be hot and humid under mostly to partly sunny skies with temps in the low 90s. Heat index values will peak in the mid 90s.

Isolated showers and storms will fizzle before midnight with temps warm and muggy in the low 70s.

The heat dome builds with, hazy, hot and humid conditions continuing. Temps will climb even higher to the low and mid 90s with the heat index approaching the century mark!

Scattered shower and storm chances return as another front moves through the area. Temps stay hot in the low 90s with heat index values in the mid 90s,

A few more pop up showers and storms are possible with partly sunny skies and temps a little lower in the mid to uper 80s.

Mid to upper 80s with overnight lows cooler in the 60s. Humidity levels will be much lower, eliminating rain chances.

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Max Tsaparis

Wake Up Wisconsin Meteorologist

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