while we start to see that beam have gone inside. my crew and i have our eye on this ditch here, the storm ditch and the drain out there. if it gets really bad we've got somewhere to go. if it gets really bad the dish on the truck won't last very long so we won't be able to stay on the air. that is the situation out here. we know that one tornado was spotted about 19 miles north of here. as i'm speaking i can hear that the tornado warning siren has just gone off. so the immediate danger i think for this area they think came and went in a big hurry. we do know that a tornado was spotted about 19 miles north of here. we do anticipate that we'll get some more bad weather, probably big winds, with hail, the problem with the big wind of course is that there is so much debris already laying around here. megyn: what are the criteria for the sirens going on and off? >> reporter: usually that criteria would be that someone has spotted a funnel cloud some where. they know it's developed and there is an immediate threat and there isn't that much time to get shelter or close to