Thunder Megaphone – A Glacial Valley Can Focus and Amplify Thunder Into a Most Extraordinary Sound

We’ve all heard thunder, and we all know what causes it. Many of us have heard two distinct kinds of thunder, but perhaps we never really noticed or thought about it. Recently, I heard a third kind of thunder.

“Ordinary” thunder – a thoroughly extraordinary sound, but the kind of thunder we hear most often – happens when lightning occurs at some distance from the observer. The initial sound of the lightning bolt echoes off surrounding objects and air masses. Because it is echoed so many times, the thunder stretches out into many, many seconds, even though the initial sound might have lasted a second or two at most. Moreover, because the initial sound echoes off soft things with indistinct surfaces – clouds, thermoclines, and weather fronts – and because many echoes reach the ears of the observer at different times, the original sound is greatly distorted. Almost all high frequency components are filtered out, and the observer hears mostly a low-pitched rumble.

When lightning strikes very close to the observer, within a few hundred feet, the sound is entirely different. The observer might not hear echoes of the thunder at all, but only the pure initial sound. It is a single, sharp, intense “POW!” It may be followed by a much quieter, but still loud, whistling or hissing sound.

But what about that third kind of lightning?

I was camping alone in Crawford Notch State Park in northern New Hampshire, when thunderstorms began rolling into the valley just after dinner. I tidied up my campsite just before the rain started, then retreated to my tent. One thunderstorm passed without much incident.

Darkness had fallen by the time the second thunderstorm rolled up from the south. I occupied myself by counting the time interval between lightning and thunder to track the movements of the storms. Fifteen seconds before the thunder rolled up from somewhere west of Mount Bemis, and I knew the storm was just under three miles southwest of me. Seven seconds between the flash and the rumble beyond Frankenstein Cliff, and I knew the storm was passing nearly a mile and a half to my west.

And then it happened!

A flash. I counted eleven seconds. And I heard a sound unlike any thunder I had ever heard before.

The cacophony included at least half a dozen rapid repetitions of the “POW!” of a nearby lightning strike. But at the same time, there was the rumbling and roaring of “ordinary” thunder, but much, much louder than usual.

Before I could figure out what that sound was, there was another flash somewhere to the north. Again I counted eleven seconds, and again I heard that utterly incredible crackling and powing and rumbling and roaring.

This time, I figured it out.

It was a lightning strike right within the upper reaches of Crawford Notch just a couple of miles north of me. It was right within a gigantic stone megaphone formed by Webster Cliff on the east, Mount Field and Mount Willey on the west, and the old glacial cirque of Mount Willard for a backstop on the north.

And this 1,500 foot deep, three-mile-long granite megaphone was pointed right at Dry River Campground.

Yes, the beautiful U-shaped glacial valley of Crawford Notch is a nearly perfect megaphone, albeit open on top. The bare stone faces of Mount Willard and Webster Cliff echoed the initial “POW!” of the thunder almost undistorted. The western slope of the notch is a bit more heavily wooded, but there’s enough bare ledge and rockslide there to provide a pretty good echo. The open top of the notch was covered by the underbelly of the thunderstorm itself, which provided enough of a soft echoic surface to create the usual rumbling of thunder in addition to the clean “POW!” echoes off the rock faces.

But all of this sound was extraordinarily loud because of the megaphone that focused it all right on me and my campsite.

After I got this all figured out, there was a third lightning flash in the north. Yes, eleven second later, there was that glorious, unearthly sound again.

I wondered why I had never heard this kind of thunder before. I have probably experienced thunderstorms in Crawford Notch at least a dozen times over the years, but never heard the Thunder Megaphone.

My best guess is that I probably have heard it before, but never noticed it. Most of the times I’ve camped there, it was with a crowd of friends and family. Much goes on when a thunderstorm rolls in. Ponchos have to be broken out and put on, while at the same time, various disorderly what-nots need to get stashed into cars and tents before they get soaked. There is a bit of yelling and shouting to be done, and paradoxically among the mayhem, kids and dogs need to have their fears calmed. Meanwhile, tarps over the tents and picnic tables are flapping in the gales, making a poor imitation of thunder themselves.

In all my 25 years camping in Crawford Notch, this may have been the first time I experienced a thunderstorm while I was camping there alone. There was no tarp over the tent, and I had anticipated the thunderstorm well enough to get everything into the car long before the rain started.

So, when the lightning and thunder came, I had nothing to do but observe.

What a treat!

I half hope we get a thunderstorm the next time we go camping in the mouth of the Thunder Megaphone.

7 Questions to Ask Before Booking A DJ For Your Wedding

Scouting for an amazing disc jockey (DJ) for your wedding is not a stroll in the park since there are many things to put into consideration. However, before booking that DJ, he must be able to provide appropriate answers to the following questions in order to prove his competence.

1. Are you a full-time DJ?

It is important for you to know that the DJ you want to hire is not just a one-dimensional part timer who may not owe enough time to the job. He must be involved on a full-time basis with quality experience that cuts across various events. He must be a true performer that can handle tough audiences without stress and satisfy them.

2. How do you treat song requests?

You should engage a DJ that understands how to strike a balance between couple's song requests and those of the guests so that both parties are adequately satisfied.

3. How do you customize the music experience for each couple?

He should be able to provide a soundtrack for your wedding which is dependent on your taste, style and vision for the day. He should be able to willingly accept your must-play and do-not-play lists because you are supposed to be in control of the music that will be played on that day.

4. Can I hear some samples of mixing and blending of different tracks?

He should be able to blend between songs harmoniously to the point that you may not even be aware of it. There should not be artless silence between songs as this will make your party to be boring.

5. What sound equipment do you work with? Do you have back-up?

The equipment that a DJ makes use of is as important as musical instruments. His turntable, microphone, mixer, computer, etc., must be up-to-date in order to reel out the best mix for your party. It is also important to have back-up equipment to guard against unforeseen circumstances.

6. How do you get the crowd pumped?

DJs have a lot of baits to encourage guests to take on the dance floor. You can request for a video of past performances in order to gauge the skills of the DJ you want to hire in entertaining guests.

7. Why should I choose you as my wedding DJ?

Providing a satisfactory answer to this question will go a long way to prove that you are about to hire a competent DJ. He should be able to tell you what makes him unique in the industry and this will assist you in making a vital decision that will make your wedding successful.

Earn Money From Home Fast

If you're looking for ways on how you can earn money from home fast for you to be able to make an additional income without having to give up your current job or spend more time away from your family and loved ones, you should consider the wide range of jobs that you can get online. These jobs will allow you to earn an amount much more than your previous job.

These types of work opportunities that promises to allow you to earn money from home fast could certainly fulfill your lifelong plans and make your dreams come true because you can earn a great deal of money while being with people that matters to your heart the most. But let it be reminded that your income will still depend on the time you spend for work.

One benefit that a person can get from these works at home jobs is the fact that they do not require you to work 5 days a week for at least 8 hours a day. In fact, a lot of these home jobs could have been done at your own leisure. You can work even for 3 hours if you wish, just as log as you meet your deadline and you deliver your work in good quality.

Another point why people would rather opt for this kind of job is the fact that they can be paid immediately or after every after after work is finished since they can get the fruit of their labor all at once. However, this is not always the case since other employers prefer paying twice a month or once a month depending on what is agreed upon.

Imagine learning more than what you even receive from your regular job. Would not that be so much fun on your part? No need for you to worry about your future because work at home jobs have got that covered for you.

Low Cost Hosting

If you are thinking about getting low cost hosting then you are most probably new to the internet, and new to designing websites. When people first start out they think that they should look for the cheapest option for them to get started. This is by no means a bad idea, as we are all trying to save money in this economy. But you have to take many factors in to consideration when you want to develop a site.

There is basically two types of hosting, paid and free and a lot of people that start out go down the free route. Free hosting gives you the option to upload files to the host server, but it is limited to how much you can upload. The speeds of the server will be a lot slower than a paid host, so for example, if you have a few pictures that you have uploaded to the server for your site, it might take a little bit longer for them images to appear on your website.

Because you use free hosting you do not get a domain name from a registrar, so if you were to start a new business, you would be greatly hampered in trying to compete with other sites in your niche. Customer support is non existent in free hosting also, so if you were to ever have problems, you would basically have to try and work it out for yourself.

Free hosting works if say you are a person that wants to share files to friends or family, or you have a hobby and would like to share to people, you do not mind the restriction that free hosting serves. But if you are serious and want to make a real business online then paid hosting is the way to go.

It is the old saying you pay for what you get, and within the hosting business this term applies exactly the same here. It comes down to what you get for your money, so you need to look in to this very carefully before choosing a provider. What you should be looking for in a provider is the following.

  • Unlimited domains: You need to know if you can have as many websites as possible on the hosting package. It is pointless having the host, if you can only say have five domains, so you could only build five websites.
  • Unlimited Disk Space: This is also very important, say you have a photography business, and you want to upload hundreds of photos on to your site. You need a good host that has unlimited disk space.
  • Unlimited bandwidth: You need a host that has good speeds and this depends on the bandwidth.
  • 24 hour live support. I consider this to be very important, if they do not offer live support like this then I would not use the company.

On a final note all the big hosting companies offer different types of packages to suit the individual. They offer packages such as Baby plan, hatchling plan, then they go more advanced with options like reseller hosting, VPS hosting, dedicated servers and so on.

Low cost hosting is only as low as what you are prepared to give to your website, there is some great packages out there right now, ranging from $4 a month up to $10 a month. It is up to you the consumer to make your choice.