posted on Apr, 13 2012 @ 07:17 PM
Here is my thoughts about what you are hearing,
It is possible that what you are hearing is Positive Lightning. I have had recent experiences with this near my home. It is quite rare and very loud
and scary when it strikes close by.
My subdivision had strikes at 4am that woke me like a bomb hit my house. It happened 4 times that morning and scared both my wife and I so much that
we could not go back to sleep. It sounds like rolling rumbles for about 30-45 seconds after the strike too.
Positive lightning strikes typically carry six to ten times the charge and voltage difference of a negative bolt and last around ten times longer.
Positive lightning is a rare form of lightning which carries a positive charge to the ground, rather than the negative charge which is typically
associated with lightning. This type of lightning can strike across very long distances, and with formidable power, making it extremely dangerous. It
is often much more powerful than regular lightning, striking with as much as one billion volts of power. As you might imagine, positive lightning is
not something you want to tangle with.
In the case of positive lightning, the charge comes from the positively charged top of a storm cloud, and it connects with a negatively charged
streamer. Positive lightning can travel across ten miles (16 kilometers) to meet a negatively charged streamer, releasing a burst of positively
charged energy to the Earth. Positive lightning is often associated with human activities, especially rocket launches and the testing of nuclear
Because positive lightning can travel across great distances, it is not as predictable as other forms of lightning, and this makes it more dangerous.
Positive lightning can also travel from cloud to cloud, also across great distances, and it may sometimes make a connection with the ground after
traveling from cloud to cloud. The result can be a so-called “bolt from the blue,” a lightning bolt which strikes in seemingly fair weather.
Recent weather forecasters have stated that the number of Positive lightning strikes have increased it the last year.
Hope this helps you to find the cause.