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Phil VeerkampJuly 27, 2012 - 5:02 pm
Mr. Warren, I believe that I have experienced the same "booming" that triggers your curiosity. My first experience was in the 1950's-1960's when in the Gold Hill area I would hear these afternoon "booms", "thumps", "explosions" that seemed to come from the east - from the Sierras. There were no clouds over the mountains but the sound was similar to distant thunder - sometimes a single thump followed by a closely spaced pair of "booms"/"thumps". At the time I tried to explain them off as distant aircraft sonic booms. I have more recently heard them from my residence in Diamond Springs. I have since wondered if they were deep geologic Sierra events. Anyone???
I live in Pollock Pines and have also heard these booms around the same time for years. Didn't think much about them other than "how curious" until recently my neighbor mentioned them as well. We discussed quarry or mining activity as possibilities. Seems too consistent for building or road construction activity, and I don't recall hearing them during winter months. Avalanche control doesn't seem to fit either. ??????????
Prime, interesting read - thanks. But I'm not sure that these local sounds yield to the article's thesis. I have never heard these sounds at night. They are almost always in the afternoon - sometimes in the morning - never at night. . . still curious.
We live in Camino and hear the booms, too. I hear them all day long. From morning until evening. Not sure about weekends. I will listen now. I assumed it was construction somewhere. I Hear it when in Pollock Pines, too. About the same level and intensity. I do not think it is orchard/vineyard protection as It is just as loud in Pollock Pines as it is in Camino. It is interesting that Somerset and Pollock Pines both hear the noise. Is there construction or mining going on along the American River or somewhere up towards Tahoe? Is it Snows Road Quarry? What is this noise???
I also live in Camino and have been hearing these booms for years. They vary in intensity to the point of shaking my house and go all year long, so I don't think they are bird cannons. I would think some kind of govt. agency would look into it.
Ken, they ARE NOT bird cannons. The sound seems distant. It is easily masked by ambient city or hwy noise. When it catches ones attention and there might be conversations in progress one might be tempted to shush the conversation and listen. The thumps/booms/thumps seem to come from the east. I'll go with Area 51 before I'll go with bird blasters . . .
We've been hearing them for years in Coloma too, mostly in warm, cloudless weather around 12-2 PM. Sometimes the brief thuds sound like someone stomping on the roof causing my dog to bark in alarm. You can feel the air vibrate as much as hear them. Not sure if quarries are blasting...or perhaps HAARP?
I believe I have the answer, Fallen NV has the Fallon Navel air station They train at three ranges relatively close to us Hwy 95 next to Walker River Indian reservation, Hwy 95 by Sheckler reservoir and Hwy 50 & hwy 31. I often frequent Sand Mountain NV 20 or so miles east of Fallon and have witnessed the bombing at the 50&31 Hwy range. It is quite awesome,I believe that you can hear them from here even though they are 140 to 170 miles away, the entrance to the Hwy 50 range has acres of target stock (old army transports, jet aircraft,and other vehicles) even simulated towns (buildings) Ck out google maps satellite views you can see all these things close up. I have wondered for years what that was until I looked into it. I hope this helps all of you with the mystery.
Possibly the event orignally known as the 'Rocky Mountain Artillery' it has been heard in other mountain ranges including the Sierras. During the Lewis and Clark expedition Capt Lewis documented this phenomena in his journal entries of 7/4/1805 and 7/11/1805/. Still a mystery. http://franceshunter.wordpress.com/2011/03/15/the-artillery-of-the-rocky-mountains/
I hear those booms all the time in Shingle Springs and bombing practice from Fallon Navel air station makes the best sense ...39 years ago I was living in South Sacramento when an Ammo Train carrying Bombs bound for Vietnam Exploded in a Roseville rail-yard....It probably happened 40 miles away, but I thought it was going to break the windows of our house..Other than excepting that we'll have to call Art Bell for answers...
Well after a little research I'm back to sonic booms, perhaps in combination with Fallon. At 30,000 ft a supersonic wavefront will have a spread on the ground of 30 to 50 miles, which matches the reported area reasonably well. They also occur in pairs, the so called N wave, which matches what I hear at least. Also matches the day not night scenario. So a little research into flight paths may turn up some recurring supersonic flights (Hawaii, transcontinental, military?) over our area during the reported boom times.