Low Rumbling Noise

Parent Cafe
1

<p>I heard a long, low rumbling noise this afternoon, mid- afternoon. I opened a window and could not detect any direction it was coming from. It went on for several minutes and then just stopped. I am on the Jersey shore, but I don’t think it was a boat or plane. It did not change in intensity. I hear it last week as well. Anyone know what this is? Maybe something military?</p>

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<p>Thunder Snow? It is a known phenomenon and has been recorded in several of the recent blizzards.</p>

3

<p>It could easily be from a helicopter - especially a military one. I hear that all the time (lots of military copters flying around here) and it usually makes you wonder what it is at first as it hits some resonant frequencies with things in the house. They can easily be far enough away to not see.</p>

4

<p>Earth quake?..</p>

5

<p>Tinnitus?..</p>

6

<p>Aliens. For sure.</p>

7

<p>I vote for the helicopter too. Was it cloudy? That can affect the quality of the sounds you hear. And when the helicopter moves off a bit, the sound can completely disappear.</p>

<p>Or it could have been a snowblower, or a tree chipper. Once I heard a really strange droning sound and looked up to see a blimp!</p>

8

<p>It’s the sound of college acceptances winging their way to happy seniors!</p>

9

<p>Big slot machine payout?</p>

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<p>You do realize there’s an Air Force base nearby, right?</p>

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<p>I thought perhaps it was our local military establishment doing something. I heard it again today at 10:15. It went on for about a minute. Yesterday was several minutes. It is just odd how it starts and stops so abruptly. It is not like it trails off as would a plane or helicopter moving out of range.</p>

12

<p>Ice on a body of water? I have heard ice move in Alaska.</p>

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<p><a href=“http://upload.wikimedia.org/wikipedia/en/3/33/Tremorsposter.jpg[/url]”>http://upload.wikimedia.org/wikipedia/en/3/33/Tremorsposter.jpg&lt;/a&gt;&lt;/p&gt;

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<p>I use to live near an Air Force base and remember hearing that sort of sound pretty regularly.</p>

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<p>I used to live on Air Force Bases. It’s not unusual for them to spin up a jet engine and then have it stop abruptly when they’re working on the planes and testing the engines. They’re working on these planes, swapping engines, testing engines, etc. all the time.</p>

<p>When I lived on a base in the desert a long time ago I got used to hearing sonic booms all the time since they frequently (multiple times per day) broke the sound barrier there. Now that gets your attention.</p>

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<p>trains, too, do that, though don’t stop abruptly; I am amazed how far I can hear/feel the rumble of a big freight train at night</p>