Moore Oklahoma Tornado VideoThis week’s tornado in Moore, Oklahoma may be one of the worst, strongest tornadoes that you’ll hear about in your lifetime.

The devastating EF-5 twister wreaked more havoc in 30 minutes that most towns experience in a decade.

Now, terrifying footage from the first ten minutes of the tornado’s development has made its way to the web.

Watch and listen as these eye witnesses relay critical information to forecasters and scientists as the storm goes from a small, rope-like twister to a full-blown EF-5 monster..

Their quick thinking and incredibly accurate reporting likely saved hundreds of lives, as they basically state that “if you’re not underground, you’re not going to survive.”

Check it out below.