Cooler air moved in to start the week in Harrisburg, but a surge of heat is on the way.
The cooler air that moved into the region was a result of a cold front swung through late on Sunday.
More fall-like temperatures spread across the Northeast, dropping the city's high to 74 degrees Monday. Some spots in northern New England even struggled to climb out of the 60s.
However, things will heat up again Tuesday as the cool air slides off into the northern Atlantic. This will allow warmer air to push up from the South.
Temperatures will swing to 10 to 15 degrees above average for a brief period.
From Tuesday through Thursday, temperatures will peak near 90 degrees in the urban areas with RealFeel® temperatures near 100 degrees for a few hours.
The next cool front could bring thunderstorms to the area on Wednesday night and Thursday. Some storms on Thursday could be strong, perhaps severe.
A tropical threat from the Atlantic on the United States and Caribbean islands may increase into next week.
As temperatures rise through the weekend in the South, so will the risk for heat-related dangers.
United States residents may pay higher heating costs this fall as colder air is expected to grip the Rockies and Plains at times and some quick-hitting chilly shots may impact the Northeast.
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Several rounds of thunderstorms are on tap for the Minneapolis area over the next few days.
Monsoonal moisture from the tropics slammed the Phoenix area and other parts of the Southwest with heavy rainfall, causing flooding in the region.
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"One of the most violent hurricanes (wrong name) experienced by mariners for many years swept over Lake Huron, doing extensive damage to vessels." Ships lost sails and had masts taken off 30 feet above deck.
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A tornado killed 31 people and destroyed 1351 dwellings.
Great Idaho Fire was contained after 851 lives and 6 billion board feet of timber were lost.