Are Skyquakes Real?

iStock
iStock

by Alex Carter

In 2012 YouTube was inundated with videos of a very rare atmospheric phenomenon—the skyquake. Skyquakes are characterized by unexplained noises coming from the sky, often in remote areas with no obvious explanation as to the source of the sound. Skyquakes have been recorded all over the world, and in every case, the sky suddenly takes on a creepy hue and emits unsettling, unnatural noises.

The reason it’s easy to say that it was 2012 is because they were all uploaded to the same YouTube channel, skyquake2012, a channel that specialized in taking shaking, amateur phone footage and adding the creepy trumpet sound from Kevin Smith’s Red State movie. In other words, they were all hoaxes.

But the phenomenon itself is no hoax. A skyquake is a real event that has been documented for centuries.

It’s difficult to distinguish between fakes, videos of unexplained noises that are of human origin, and genuine skyquakes, but the real examples of this phenomenon are all described the same way by those who experience them: a loud boom that sounds like distant cannon fire. Weirdly, the genuine ones all occur near coastal areas.

No one has been able to fully explain why certain areas experience periodic skyquakes, but enough evidence exists to suggest these are real phenomena and that the residents of these areas aren't making up stories. The fact that there are words to describe the event in different languages lends further credibility. In Japan they are called uminari (海鳴り, "the rumbling of the sea"); in Dutch, "mistpoeffers"; and in parts of the U.S., "Seneca Guns."

Some skyquakes are said to have human origins, like when a military aircraft breaks the sound barrier—by the time the sonic boom is heard, the plane is no longer in sight. But that doesn’t explain any that were recorded before the invention of aircraft, which means there must be other explanations. One popular theory is that the sound is due to meteorites exploding in the upper atmosphere, although that raises the question as to why the bright flash accompanying the explosion isn’t more visible. Others suggest the noise may be due to thunder from storms over the horizon, which is plausible only if you don’t know what thunder sounds like.

The most likely explanation is that the Earth is passing gas. (Really!) The sound of gas escaping from underground vents would resemble a quiet volcano, or distant explosions, which would explain not only the sound, but why the sounds are pretty much only heard in coastal areas. Many of the vents weak enough to allow gas out would be underwater, and in many cases the gas may be due to decaying biomatter at the bottom of the lake. The gas could also be escaping from underwater caves that are collapsing.

All of this is to say, if you ever hear an unexplained explosion, rest assured that it was only the Earth. But for fun, you can still blame it on the dog.

Denver's Temperature Dropped a Record 64 Degrees In 24 Hours

Leonid Ikan/iStock via Getty Images
Leonid Ikan/iStock via Getty Images

One sure sign summer is over: On Wednesday, residents of Denver, Colorado were experiencing a comfortable 82-degree day. Just before midnight, the temperature dropped to 29 degrees. Between Wednesday and Thursday afternoon, the Denver airport recorded a differential of 79 degrees down to 24 degrees. At one point on Wednesday, a staggering 45-degree drop was seen in the span of just three hours.

All told, a one-day span saw a 64-degree change in temperature, from a high of 83 to a low of 19, a record for the state in the month of October and just two degrees shy of matching Denver’s all-time record drop of 66 degrees on January 25, 1872. On that date, the temperature plummeted from 46 degrees to -20 degrees.

Back to 2019: Citizens tried their best to cope with the jarring transition in their environment, to mixed success. On Wednesday, the city’s Washington Park was full of joggers and shorts-wearing outdoor enthusiasts. Thursday, only the most devoted runners were out, bundled up against the frigid weather.

The cold snap also brought with it some freezing drizzle which prompted several vehicular accidents, including 200 reported during Thursday's morning commute. It’s expected to warm up some in the coming days, but residents shouldn't get too comfortable: Melting ice could lead to potholes.

[h/t KRDO]

Fall Foliage Is Running Late This Year

Free art director/iStock via Getty Images
Free art director/iStock via Getty Images

The August arrival of the pumpkin spice latte might have you feeling like fall is in full swing already, but plants aren’t quite so impressionable. According to Travel + Leisure, the best fall foliage could be coming a little later than usual this year.

Historically, the vibrant transformation starts to sweep through northern regions of the Rocky Mountains, Minnesota, and New England in mid-September, and reaches its peak by the end of the month. Other areas, including the Appalachians and Midwest states, don’t see the brightest autumn leaves until early or mid-October. The Weather Channel reports that this year, however, the forecast from the National Oceanic and Atmospheric Administration predicts unseasonably warm temperatures for the next two weeks, which could impede the color-changing process.

Warm temperatures aren’t necessarily bad for fall foliage, as long as they occur during the day and are offset by cool nights. Since meteorologists don’t expect the overnight temperatures to drop off yet, plants will likely continue producing enough chlorophyll to keep their leaves green in the coming days.

The good news is that this year’s fall foliage should only be about a week late, and meteorologist David Epstein thinks that when leaves do start to change color, we’re in for an especially beautiful treat. If the current weather forecast holds, he told Boston.com, we'll "see a longer season than last year, we’d see a more vibrant season than last year, and it would come on a little earlier than last year, which was so late.”

Though poor weather conditions like early snow, heavy rain, drought, or strong winds can cause leaves to fall prematurely, most trees right now are in a good position to deliver a brilliant display of color after a healthy, rain-filled summer.

Find out when you’ll experience peak fall foliage in your area with this interactive map.

[h/t Travel + Leisure]

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