“Birmingham area law enforcement agencies said they’ve received reports, and so has St. Clair County EMA. The areas that experienced whatever it was include Arab, Oxford, Anniston, Hayden, Kimberly, Center Point, Jasper and Gardendale just to name a few.”Al.com reported that the boom occurred around 2:39 p.m. EST (1:39 CST – the rest of you can figure out what time that was in your area) and social media was immediately flooded with “What was that? #WhatWasThat #LoudBoom” comments and speculations. St. Clair County and Birmingham are heavily populated areas near the center of the state. Reports from government organizations soon followed. The National Weather Service seemed to be first with a statement that:
“loud boom heard: we do not see anything indicating large fire/smoke on radar or satellite; nothing on USGS indicating an earthquake. We don’t have an answer, and can only hypothesize with you. 1) sonic boom from aircraft; 2) meteorite w/ current Leonid shower?”The US Geological Survey soon updated that report, saying seismic data from its Lakeview Retreat near Centreville, Ala., showed “a fairly loud boom occurring on or before 1:39 p.m. CST.” That report was confirmed by the Elginfield Infrasound Array at the University of Western Ontario which picked up the infrasound signal at 3:02 p.m. and observed it for 10 minutes.
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