alex trevino, 9 news now. >>> thank you, alex.yland officials are keeping a close eye on the wind conditions at the chesapeake bay bridge. two-way traffic was stopped yesterday because of the winds. it is a big safety measure especially with trucks. at last check things are operating normally but conditions could change at any moment and if we find out any change we will bring them to you. >>> in massachusetts crews are keeping an eye on a dam in freetown between the snow, the wind and the rain they are worried if the dam will hold up. it is keeping the pond from flooding nearby homes. they are asking people to evacuate as a precaution. >>> you can keep an eye on weather here and across the nation all day long while you are at work go to wusa9.com. click on the weather tab. >>> the three-day national transportation safety board haring in to last year's deadly metro collision is over. the hearings exposed glaring shortcomings including a warning not to reconfigure electronic components on the system that is supposed to keep trains

. >>> and we are tracking the progress of some of those power crews. 9 news reporter alex trevino is in mclean, virginia with more. good morning, alex. >> reporter: goodgood morning, andrea. the big story is broken trees on people's yards. it is hard not to miss in mclean. a lot of limbs on people's yards and one can only suspect it is due to heavy winds. we know 320 families in this neighborhood are currently without power. strong winds took down a tree and landed on some wires at langley high school in the middle of the night which is just behind the neighborhood we are at. the crews from dominion virginia power company replaced the wires only to have another tree topple over the same section of repaired wires. yep, new wires go up and then they come down again. so crews waited for this morning to replace the broken wooded cross arm and restring the wire at that section of the high school for safety reasons. the school is operating on a generator until the power is restored. so they have some lights, just no heat at this point. very intense situation. this wind storm is causing in n

. >> alex trevino is looking at the roads in northwest washington. we saw plows coming through in virginia but what about our area, where you are right now? >> in the last hour or two it is amazing how much snowfall we are seeing. it is a significant change. this is just amazing. people are still out and about walking, but, you don't see this snowfall in south texas. not this. maybe one in every 100 years, but the snowflakes are becoming bigger. of course we are standing underneath this tree, and don't want one of these branches to fall on my head like the meteorite that fell a couple of weeks ago. there are still cars, people are driving on the roadways here. good thing is the main roadways are treated. so the side roadways that you have to be careful with. and the intake sidewalks are a little bit wet and dangerous. slippery. so that's something you will have to take extra precaution as we are going in to the darkness here in an hour or so. so, take extreme caution. and watch where you are going if you are out and about. >> all right. great advice.