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May 15, 2018

Did you hear that boom? Thunder sets off car alarms in Philly

Weather Thunderstorms
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A thunderstorm rolled through Philadelphia on Tuesday night, bringing brilliant lightning flashes and roaring thunder. 

But one prolonged boom particularly resounded throughout Center City. The blast, which occurred around 9:40 p.m., reverberated throughout the high rises and set off car alarms.

Naturally, it shook the Twitterverse, too. 

Some people claimed it was the loudest thunder they ever recalled hearing.

A typical thunder boom reaches about 120 decibels, according to the National Lightning Safety Institute. That's 10 times louder than a garbage truck or jackhammer drill.