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Morning fog to give way to a muggy, unsettled day

Monday morning’s fog will give way to spots of sun later in the day, bringing muggy conditions with extreme dew points and temperatures in the upper 70s to low 80s, according to meteorologist Bill Hibbert of the National Weather Service.

The thunderstorms that may develop late in the afternoon throughout Western New York could trigger heavy downpours, Hibbert said.

“The air is saturated with moisture,” he said. “We may even see some ‘suicide sun.’ ”

The weather event occurs when sun breaks through the cloud cover and heats the air, causing moisture to rise and form a cloud that then covers the sun.

“So the sun does itself in,” Hibbert explained.

Light showers from the Southern Tier will travel through South Buffalo and chase away the fog that many commuters drove through Monday morning, Hibbert added.

“By 9 a.m. – as the morning progresses – the fog will have lifted from south to north,” he said. “Any thunderstorms that develop this afternoon have the potential to trigger flash flooding. There is a load of moisture in this steamy tropical air mass.

“With dew points running in the mid to upper 60s during the day, they are expected to top out in the lowers 70s,” said Hibbert

The dew point is the temperature at which the air can no longer “hold” all of the water vapor that is mixed with it, causing some of the water vapor to condense into liquid. The dew point is always lower than or equal to the air temperature.

A cold front Tuesday will usher in cooler temperatures and less air moisture. Highs should reach the mid to upper 70s with “regular sunshine,” according to Hibbert.

Sunday’s multiple rounds of strong thunderstorms tore through Wyoming County, flooding streets in the Village of Perry and two restaurants on Main Street. Main Street was closed briefly between Washington and Center streets.

The Wyoming County Office of Emergency Services reported 53 requests for basement pump-outs, requiring the services of 17 fire department crews and the placement of 400 sand bags.

Fire companies on the scene were: Perry, Warsaw, Wyoming, Silver Springs, Perry Center, Castile and Mount Morris.

Areas within the Village of Perry that were most affected are: Dolbeer, Grove, Washington and Needham streets.

Warsaw, Silver Springs and Castile also experienced heavy rains.

The flash flood watch that affected Allegany, Cattaraugus, Chautauqua, Livingston, Ontario, southern Erie and Wyoming counties was lifted at 6 a.m. Monday.

A flash flood watch means the threat of flash flooding exists along rivers and creeks. If you are in the watch area, you should monitor weather conditions closely. Be ready to move to higher ground if flooding is observed.