Page 8 - Vapor Cloud News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Vapor. >> the lng expands 600 times, as it vaporizes. wind carries the vast vapor cloud towards downtown boston. the cloud erupts in a fireball 1,000 feet high. a vast thermal radiation wave pulses through the city. this isn't fire but heat from the explosion, so hot that it ignites anything in its path. >> that circle identifies the region within which there would be harmful radiation to anyone on the shore. >> the gas would only burn for 15 minutes, but would be long enough to devastate the city. >> that's an enormous fire. we've never seen anything like that. and i hope we never do. >> but ...

A moving freight train hits a parked train at the texarkana depot, causing a derailment, but not an explosion. >> could you call back and see if they can ascertain exactly which car is overturned and maybe what the contents of the car was? >> it's not like a regular car accident. it can be thousands of gallons of very toxic chemicals up to maybe nothing leaking at all. kind of have to get there and investigate and determine what's going on. >> officer mcadams is one of the first on the scene. >> i've got some kind of chemical smell. i'm backing up. it's slowly drifting further south. >> he not...

Depot, causing a derailment but not an explosion. >> could you call back and see if they can ascertain exactly which car is overturned and maybe what the contents of the car was? >> it's not like a regular car accident. it can be thousands of gallons of very toxic chemicals up to maybe nothing leaking at all. kind of have to get there and investigate and determine what's going on. >> officer mcadams is one of the first on the scene. >> i've got some kind of chemical smell. i'm backing up. it's slowly drifting further south. >> he notices gas seeping out and spreading in a dangerous vapor cloud...

Also responds but the battalion chief rick pavick doesn't see the vapor cloud. he's taken completely by surprise when the gas finds an ignition source and erupts 500 feet away. >> it was real crazy. it was amazing, is what it was, just to be that close to something that large and watch it spread out. >> when the gas ignites, officer mcadams' dash cam records the initial sound, but the explosion is out of view. the texarkana police dispatcher has a clear view of the train track s and radios officer mcadams. >> we just had a huge explosion. we've got massive fire out here. >> as officer mcadams ...

Maybe what the contents of the car was? >> it's not like a regular car accident. it can be thousands of gallons of very toxic chemicals up to maybe nothing leaking at all. kind of have to get there and investigate and determine what's going on. >> officer mcadams is one of the first on the scene. >> i've got some kind of chemical smell. i'm backing up. it's slowly drifting further south. >> he notices gas seeping out and spreading in a dangerous vapor cloud. >> i see kind of what looked like a light fog, chemical that was leaking was heavier than air so it kept to the low ground. the chemical ...