authorities are still trying to figure out more details on how the attack was planned and who owns the truck. now, a previously unknown palestinian group is known for they attacked. they could have been inspired by isis, jon. >> jon: thank you. >> jenna: thousands are left without power, and possible parts of california and western nevada, heavy rain caused widespread flooding there. our meteorologist has the details for us now. >> unfortunately, more rain and snow on the way. it should be a good new situation, they have been in a drought for years across the west in southern california. too much rainfall, too much snow pack is going to lead to concerns of flash flooding, debris flow, avalanche risks. let's look at the last 24 hours. all of that moisture streaming in. we have delays at the airports in los angeles and denver as the snow and rain continues in. look at tomorrow. look at that wall of water that