They showed up this week in Oklahoma, were then recorded in Massachusetts, and one reader even reported them in Indiana, but it seems that the "Mystery Booms" are still going strong with new reports coming out of the West Coast.

The first new set of strange explosions were heard in Weber County, Utah last night around 9:00 PM, prompting hundreds of concerned citizens to phone the local authorities. Interestingly enough, when Fox 13 News rang up the University of Utah to check in with the Seismograph department, they claimed that while there were no earthquakes to speak of, they did pick up some unidentified "sonic activity" around the time the booms were reported.

One resident believed that the noises were related to aircraft:

Sonic booms. They're not supposed to break the sound barrier of the continental U.S., but they did so. I know they're doing some night training over the West Desert because I saw a string of tracers being fired high in the sky tonight, about 10 or 11 o'clock. Way out west of Skull Valley.

The local Hill Airforce base, on the other hand, claims that they had no aircraft in the air after 6:00PM. Likewise, the National Guard stated that had no weapons training that day, while the ATF told reporters that there were not rocket tests that day either. Hrmm..

California Mystery:

The loud explosion that jolted North Hollywood on Tuesday night remained a mystery the next morning, authorities said. An officer at the Los Angeles Police Department's North Hollywood station said police searched the area for a half an hour Tuesday night but had no luck in determining what caused the sound. The officer said police received numerous calls about the noise. At about 9:30 p.m., numerous people began tweeting about a loud explosion. Some thought it had come from a North Hollywood Metro station; others reported hearing an explosion in Studio City. "Mysterious explosion a few minutes ago. What's going on? #LA" tweeted @ThatVitalSpark. "Seriously, any leads what the hell this boom was in North Hollywood? Im shook up a bit" tweeted @RajRawal37. A Reddit user posed the question: "What just blew up in North Hollywood?" By 10:30 p.m., there were more than 120 comments, but no crowd-sourced answer. However, possibilities ranging from alien invasions to meteors were proposed. - LA Times

Massachusetts mystery:

Salem and Marblehead police officers searched the area of Ocean Avenue early Saturday morning for evidence of what could have caused the large boom that prompted residents across the area to call 911. According to Sunday morning's Salem police log, At 1:34 a.m., police received multiple calls regarding a "loud bang" on Ocean Avenue. They were unable to locate the source. Many of our readers in Marblehead also reported hearing the sound, which has some town residents wondering whether or not it is coming from the harbor. This isn't the first time we've written about mysterious explosion noises being reported in the area late at night. Theories offered so far have included youngsters with powerful fireworks, cannons from boats in the harbor, malfunctioning electrical transformers, UFOs and the shifting of tectonic plates under the city. - Marblehead Patch

Moose Jaw resident Greg Wheler saw a meteor in the northern Moose Jaw skies close to 10 p.m. Monday night.

"It turned bright white with a blue centre and burned up as it flew east to west," said Wheler in an email to the Times-Herald. "It caught my eye through my living room window."

Chris Beckett, volunteer and national observatory chairman of the Royal Astronomical Society of Canada Regina centre, said the meteor sighting was most likely part of the tail end of the Quadrantid meteor shower that peaked last week.

"There's a couple of meteor showers that peak right now and these tend to be brighter, slower-moving meteors," said Beckett. "I've seen lots of them in years past and they'll get your attention even from the city."

A Saudi man has found a solid object that he believes to be a meteor that fell near his house and broke into several pieces.

Mashari Al Subai said the object's fall had created a small pit in the ground behind his house in the western Saudi town of Raniya before it fragmented into small and medium-sized parts.

He said the large piece he found has a semi-transparent hazel colour, adding that the colour changed abruptly when the object was heated.

"I conducted a small test on the object. After I heated it for five minutes, its colour changed to golden yellow before it regained its original colour gradually," he said, as quoted by the Saudi Arabic language daily 'Sabq'.

He said he had sent a piece of the object to the Saudi Ministry of Oil and Mineral Resources for testing and identifying. Sabq did not specify the size of the object.

Google translation: The quiet of the morning was broken yesterday by a loud noise and explosion that was heard over a wide area of ​​the Alberdi department. Some witnesses said that, previously, a fireball had streaked across the sky in a west to east direction. It is believed that it could have been a meteorite falling.

No one knows what's causing it, but everyone can hear it: a loud, bone rattling "boom" that shakes the sky, causing locals to phone their friends (and the police), asking "what the hell was that?"

According to Mayor Chuck Burtcher, the noises are nothing new either, admitting that he started getting asked about them three months ago, but even he doesn't know what's unnerving his town, musing that the booms could possibly be from oil exploration (though they're too far from town to cause such a noise, reported KFOR NewsChannel 4)

Other residents have their own theories, ranging from local shooting ranges to a lone man at the edge of town who owns a cannon and fires it off for fun. One of the most logical explanations for the strange noise were exploding transformers, but the local electric company says they haven't had any transformers blow lately.

Anchorage - Southcentral Alaska authorities didn't have any immediate cause for a loud booming noise heard Thursday night and reported by Channel 2 viewers, but seemed to rule out sonic booms from aircraft in responses Friday.

Reports of the sounds were posted on Channel 2's Facebook page Thursday evening by people ranging from Eagle River to the Mat-Su Valley. Some reports placed the phenomenon between 8 p.m. and 10 p.m. Thursday, with Channel 2's Late Edition airing a brief update on the reports. Viewers' descriptions of the sound varied, but those who heard it generally agreed that it was a strong and persistent noise.

"I live in Peters Creek and I heard several loud noises outside and then muted the television," Channel 2 viewer Rachel Lee wrote. "After about a minute of silence, there was a rumble and my chandelier started to shake. I thought it might have been an earthquake but I looked online and there weren't any listed at that time; it was 8:05 p.m."

"About the only thing I can compare it to is someone going down a dirt road really fast," viewer Deb Spaulding wrote. "(I)t was that sort of rumble."

"I was in the garage and I heard it. It (lasted) for a while," wrote viewer Michelle Thomas Hanks. "At first I thought it was the wind until I stepped outside... My (neighbor's kids) looked for what was making that loud noise and they could not see anything just kept hearing the loud noise."

John Pennell, Joint Base Elmendorf-Richardson's chief of media operations, says the base wasn't flying any of its supersonic fighter jets capable of causing sonic booms Thursday night, with only subsonic C-17 Globemaster III transports flying until 9:30 p.m.

"Although they are loud, I don't think anybody's going to mistake them for a sonic boom," Pennell said.

12:33 AM: Have just received two reports of this, one a text, and then this e-mail from Chas in Gatewood:

No images - but sitting upstairs looking West (past my computer screen), just saw a giant green fireball enter over what looked like Kitsap Peninsula - green streak coming from high in sky (limit of window), turning yellow and ending in large (5 times apparent diameter of moon) green fireball just above what looked like the mountains - couldn't really tell how far it was except for the brightness and detail suggested it was relatively close (within hundred/or so miles). About 3 minutes ago for timing (like 12:20am or thereabouts).

We had heard of a possible meteor shower tonight. Looking it up now.

12:48 AM UPDATE: Thanks to "Meteorologist Patrick" (as we know him) Kelly - who mentioned via Twitter that it's the Quadrantid meteor shower, which Space.com is covering here. This WashingtonPost.com story has details too - apparently the shower is peaking right now (convert the WP times to three hours earlier, of course).

12:55 AM: Someone at the National Weather Service saw it too:

The year 2012 saw a new record set for most meteorite falls in a single year in the 21st century. I started keeping detailed records of every new meteorite fall that is recovered or reported by reliable sources. Some of these have not been officially approved by the Meteoritical Society yet, but that is not unusual.

In 2012, eleven (11) new meteorite falls fit the above criteria to be included on my list. Prior to 2012, the most falls in a single 21st century year (since 2000), was ten falls in 2008.

On average, since the year 2000, we have averaged about 5 recovered meteorite falls per year that are either officially accepted by the Meteoritical Society or verified by reliable sources (such as the 2008 Zunhua meteorite fall, which has not been officially approved yet, but is a meteorite nonetheless).

The first verified fall of 2012 was a few days before Valentine's Day on February 11, 2012. This was the so-called "XINING-Huangzhong" meteorite,
which has not been officially approved yet, but was analyzed and is likely an L6-chondrite.

Lexington County, SC (WIS) - Residents of Red Bank in Lexington County appear to have gotten a loud awakening Thursday morning as multiple reports indicate a loud booming noise in the area.

WIS News 10 viewers poured onto our Facebook page this morning to report the sound.

"What was the horrific boom in the Redbank area," asked Lisa Russell Fields. "People are saying it sounded like a plane crash or explosion."

"I also heard the "big boom" this morning. So did a lot of other people, it sounds like a close cannon or something and will shake the whole building/house," said Jennifer Lee Stokes Kleine.

"Does anyone have a concrete explanation for the loud boom that shook houses in Lexington County around the Redbank/YMCA/Old Barnwell Road area this morning around 8:30 a.m.," said Mary Frances Henry Bell.