A bright light/flash with an explosion.I was just getting out of bed at 4:35 a.m. and I saw a very bright light/flash which lasted about 2-3 seconds. The light/flash was bright enough to light up the area around it. Followed by the light/flash there was a sound like an explosion. My house rattled and windows shook. One of our two dogs barked as the light/flash came until the explosion sounded. The way the dog barked was unusual, like he was suddenly frightened. The entire event lasted about 5 seconds.