A severe thunderstorm watch was posted for all of Western New York through 10 p.m. Friday.
Storms began firing up through southern Ontario and the Niagara Frontier early this afternoon and impacted much of the Niagara Frontier with a burst of high winds, heavy rain and lightning.
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Several severe thunderstorm warnings were in place from about 1:30 p.m. until 3:15 p.m.
Warnings were allowed to expire when storms exited the area, the weather service said.
Temperatures, which were expected to peak in the high 80s today with oppressive humidity driving heat indices close to 100 degrees, were tempered during the early part of the day from the cloud cover that preceded the storms.
Buffalo reached 82 degrees with heat indices of 88 degrees about 2 p.m., weather service data shows.
Some clearing was occurring in southern Ontario behind the passage of the thunderstorms today, so it was possible some late afternoon heating could return before evening. Overnight lows in Buffalo tonight weren't expected to dip below the upper 70s, forecasts showed.
The heat and humidity were expected to return on Saturday. Forecasts suggest more sunshine could boost temperatures into the upper 80s with heat indices near 100 degrees across Western New York.
Heat advisories are in places for the region through 6 p.m. Saturday.
An excessive heat warning is posted for Niagara and Orleans counties where the heat index – the combination of heat and humidity – is forecast to rise as high as 105 degrees.