See it: Disaster Emergency declared after series of destructive microbursts slam Philadelphia

Mayor Cherelle Parker declared a Disaster Emergency to help strengthen recovery efforts.

PHILADELPHIA, Pa. — Parts of West and South Philadelphia were ravaged by a series of destructive microbursts over the weekend, with its powerful straight-line winds uprooting and scattering large, downed trees and debris across vehicles, homes, and roads.

NEW ENGLAND FACES INCREASING SEVERE STORM THREAT WITH LASHING WINDS CAPABLE OF KNOCKING OUT POWER TO THOUSANDS

Mayor Cherelle Parker declared a Disaster Emergency to help strengthen recovery efforts. 

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On Saturday afternoon, the city was under flash flood warnings as at least four separate microbursts struck the area, according to the National Weather Service (NWS).

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Powerful microbursts topple trees on top of vehicles, leaving them crushed (Karen Closkey | Storyful)

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Powerful microbursts topple trees on top of vehicles, leaving them crushed (Karen Closkey | Storyful)

Footage of the aftermath captured on Sunday shows large trees crushing vehicles and branches smashed through home windows. 

A street sign was also seen mangled in a toppled tree extending well into the roadway, and cars were seen carefully navigating the debris, driving under a fallen tree trunk like a bridge.

Crews are assessing and clearing the wreckage, working around the clock to remove hazards, restore services, and aid all affected neighborhoods.

A microburst is defined by the National Weather Service as a localized, descending column of air within a thunderstorm measuring 2.5 miles or less in diameter.

WHAT IS A MICROBURST?

It occurs when an updraft weakens, allowing the core of air and water to plummet and spread destructive winds upon ground impact.

To break it down even further, FOX Weather Meteorologist Britta Merwin said, "A microburst is when a thunderstorm is kind of falling apart and decaying and the updraft kind of collapses, and that means all the air rushes down from the thunderstorm to the ground, and you have this massive burst of air."

HOW TO WATCH FOX WEATHER

According to the NWS, winds can reach up to 100 mph in microbursts, which is equivalent to an EF-1 tornado