The next area expected to be affected by storm harvey. The other main stories on bbc news at 5. Sirens sound as north korea fires a missile overjapan the Un Security Council is to hold an emergency meeting later in response. Its 5 oclock our top story. A major dam outside the us city of houston has begun to overflow as authorities struggle to cope with the disastrous flooding brought by Tropical Storm harvey. We will head straight to texas tonight. Lets cross to our correspondent Laura Trevelyan in la grange in texas. Welcome to la grange which is a microcosm of the devastation across texas right now landed heading to the state of louisiana. It is a small town 100 miles west of houston and it is inland and yet the Colorado River broke its banks because of that extraordinary rainfall that happened in the aftermath of hurricane hardly and we have seen historic levels of flooding and peoples homes and businesses have been the ruin. The storm is not finished yet. Just think of what happened in houston where the situation is much worse. The store may make landfall a third time tomorrow and bring further rainfall and flooding to houston and it is heading east to louisiana on the 12th anniversary of harry katrina which caused all of that damage in new orleans. All of this as the president is on his way to his very first Natural Disaster as president to see how the relief effort is going for himself. Trying to paddle to safety. Reports elderly people, some in their 90s are still caught up. A lot of elderly people have struggled to get out of their houses. People are coming and whether boats and saving them. houses. People are coming and whether boats and saving them. I am feeling a little tired and glad to be here, i want to sit down and put my feet up and get something to eat. President trump left for texas with the first lady where he will visit austin and Corpus Christi to see first hand the of. Austin and Corpus Christi to see firsthand the of. It is a historic amount of water, there has never been anything like it. The people are handling it amazingly well and the people of texas as you know have really persevered. Thousands of people have been rescued, the authorities in houston say they decided not to evacuate the city because more than 6 Million People leaving could have resulted in more deaths. Forecasts suggest some areas could see up to 12 inches of rain today and flood Officials Say they are struggling to control the water levels of dams which is making the situation worse. Places adjacent to these reservoirs, both upstream and downstream, need to be vigilant, because the water reservoirs is rising quickly and has significant potential to cause additional flooding impact. People who have had to leave their homes because of the flood water are being offered help. We had to sleep on top of the coach and cheers because everything was wet. So he uses the alligator moving along. One woman recorded two alligator swimming in her back garden. Not far from claiming into the backyard. Meanwhile in louisiana preparations are underway and soldiers are on stand by as threatens destruction. As the storm continues to move across the gulf and potentially make a third landfall, louisiana are building in advance of that. Estimates suggest the flooding could destroy up to 20 billion in property making it one of the costliest storms in us history. President trump is due to fly to Corpus Christi in texas where it first made landfall and then he is flying off and he will see the destruction wrought in the aftermath of hurricane hardly. Right here in la grangei of hurricane hardly. Right here in la grange i have been taking a look for myself at some of the damage that has been done. So just look at the devastation wrought by the epic flooding of. We are looking at mobile homes in a trailer park picked up by the force of the floodwater. They were carried and banged into each other and look at the state of these homes. Not only have they been flooded but they have been damaged beyond repair. This is peoples lives we are looking at. That the people have Flood Insurance . Very unlikely, because this is not an area you would normally think would flood. We are in inland texas. This is not the coast, but just look. In inland texas. This is not the coast, butjust look. Peoples lives have been turned completely upside down and now they are forced to live with the reckoning of this. The Colorado River burst its banks, a river that is normally at 5 8 feet flowed at 55 feet and just look at the catastrophe it brought in its wake. Joining me now, rainer lived in one of the homes we can see. This is the first time we got to see our house close by. Ever since thursday night it was covered up and under water. It is devastating, just to see your home underwater and not be able to get in there and not even had a chance to get anything out. Some warm staff and clouds and the good thing is it Still Standing but as far as water damage, pretty much everything is gone. Do you think thatis everything is gone. Do you think that is in a possibility you could live there again, reyna . Definitely, this is where i grew up and starting over might get another hosts just there. This is our little place. Did you have any idea this was going to happen . Did you feel you got enough warming the flooding was on its way . All these people, we all grew up together and we all know each other, half of these people didnt think it would get this bad, so most of them just got some extra clouds for the night. We never thought the river was going to take most of these homes. It is hard. And where are you staying now when you can get into your own home . We are staying at a family members house at the other side of town and they have been really helpful, High School Friends from austin out of ten, notjust us but the whole community itself. It isa but the whole community itself. It is a good thing. We are role in this together and we are going to get out of this together. La grange strikes me as he really kindly, friendly and small knit community, is that how it is responding to your tragedy . Thats how i feel. A lot of people are here giving us a hand on everything, anything they can do for us. Everything, anything they can do for us. This morning they may or came to us us. This morning they may or came to us and gave a speech and it was heart warming, to say we are not alone in this situation. And this is alone in this situation. And this is a really busy time of year, back to school for the kids, what is it you need at this moment most of all . Most of all, we have health which is the important thing. Clouds, any little thing that can help us out, thatis little thing that can help us out, that is great. Right now we have a little bit of everything which is a good thing. Areas hear what under mandatory evacuation, is that what happened to you . Mandatory evacuation, is that what happened to you . That you have yellow ta pe happened to you . That you have yellow tape across your home so you knew you had to get out . Police officers and managers were knocking everybodys doors to let us know we had to evacuate. Yellow strips on the door to see we are right. But when you look at what happened to your home you must be so glad you got out . Definitely. I am glad no one is hurt and everybody listened. Material stuff can be replaced. President trump is landing in the next few minutes and Corpus Christi. Do you have a message for him, anything you feel the state needs . Heres a good president , i know some we have another few will help us out and get us back on our feet and we have another few will help us out and get us back on ourfeet and i know he will do something to help us out. Reyna, thank you so much for joining us on telling us about your experience. We appreciate it. She is just one of thousands and thousands of people across the state of texas who are now homeless who are picking up who are now homeless who are picking up the pieces of their lives at this incredibly difficult time. The storm hasnt finished its deadly work. It is hovering out in the gulf of mexico and it will be moving to the east of houston and onto louisiana with 511 east of houston and onto louisiana with 5 11 inches of rain for the louisiana itself but meanwhile all eyes a re louisiana itself but meanwhile all eyes are on communities like this one and in houston, where there has been flooding of the very reservoirs that are supposed to control the water flowing to the city. That is how much of an emergency the situation is. And with President Trump arriving in the next few minutes to assess the situation for himself. Thank you very much and they will be talking about that much more over the course of the hour, as you would expect, and we will be talking to several people very much involved in the relief effort and in preparations in louisiana as well. More on that to come. Right now, good evening, you are watching bbc news, and our other main story tonight. The Us Ambassador to the United Nations, nikki haley, has described north koreas firing of a missile overjapan as unacceptable and irresponsible. People in northern japan were told to seek shelter as the missile flew overhead. The Un Security Council is expected to hold an emergency session to discuss the crisis. 0ur correspondent, Yogita Limaye reports from the south korean capital, seoul. Siren. A warning that a north Korean Missile has just flown over the country. This is what many injapan woke up to on tuesday morning. A rocket launch from near pyongyang flew over the Northern Island of hokkaido, before breaking into parts and landing in the sea about a thousand kilometres from the coast. The range is shorter than this Intercontinental Missile north korea tested injuly, but the latest launch more dangerous in many ways because it passed over japan and had the potential to cause serious harm. The countrys Prime Minister described it as an outrageous act and an unprecedented threat. It left the people of his nation worried. Translation i cant imagine what would actually happen if anything from the missile falls onto us and im scared. Translation despite sanctions being imposed, north korea keeps developing missiles and firing them overand overagain. This is a dreadful situation. Hours after the Missile Launch, japanese troops conducted drills at a us base near tokyo. Such joint exercises with American Forces are also under way in south korea. They are preparations for an attack from the north and pyongyang often uses them to justify its actions. Here in south korea, president moonjae in has ordered his military to display overwhelming force against north korea. Its a strong statement from a leader who, for weeks, has advocated dialogue as a way out of this crisis, but this time pyongyang seems to have gone too far and south korea also wants to respond with a show of strength. Four south korean fighter jets staged live bombing drills, practising how they could attack the north korean leadership. An attempt to display military might, but despite the strong tactics from both sides, many believe that the Korean Peninsula is not on the brink of war. Despite all of the rhetoric, the bloodcurdling rhetoric that we hear, we have not seen things such as the mobilisation of forces. Moving assets into the region. North korea and south korea calling up reservists. Preparing logistics chains and bringing resources into the region. Evacuating civilians. But north koreas missile tests continue to provoke, despite sanctions and international condemnation. The world seems to have run out of ideas on how to stop them. The Prime Minister theresa may, who is shortly due to travel to japan, condemned north koreas actions as a reckless provocation. These actions by north korea is reckless provocation. These are illegal tests and we strongly condemn them. There will be an emergency meeting of the United NationsSecurity Council later this afternoon and we will work with our International Partners to put pressure on north korea to stop these illegal tests. And i will have the opportunity on my visit to japan in the next few days to be discussing these issues with Prime Minister abe. That visit is going ahead, but do you have any reservations . Regarding your safety. No, im absolutely clear the trip to japan will go ahead. This will give me the opportunity to sit down with Prime Minister abe and to discuss the action that north korea has taken. As i say, these are illegal tests. We strongly condemn them and we will be working with japan and other International Partners to make sure that pressure is put on north korea to stop this illegal action. Joining me now from paris is John Nilsson Wright a Senior Research fellow with the Asia Programme at Chatham House and lecturer in japanese politics and International Relations at cambridge university. As you can see he joins us from paris. Why was this missile fired no . What is your thoughts about the timing . The North Koreans are trying to do three things. 0n the one hand making it very clear that despite President Trumps fiery rhetoric they are not deterred by his threats. They are also i think trying to make good on their promise to continue to test missile capabilities. It is also clearly a bottle to the joint exercises between south korea and the United States, annual, routine exercises, but an effort to show they are objection to those tests, and all pa rt objection to those tests, and all part of bolstering his legitimacy at home by making progress on the Missile Development campaign he has. And the fact it travelled as far as it did, does that tell us something we didnt know before about their Technical Expertise . Not really. It is not a surprise on the back of those two key tests in july, is not a surprise on the back of those two key tests injuly, it is confirmation that they are continuing to advance in that area. It is also worth pointing out this is probably an attempt to send a signal directly, the japanese a few days ago were themselves tightening the bilateral sanctions against not only pyongyang but other countries that do business with the koreans and this is both a political move and this is both a political move and an effort by the North Koreans to shore up the deterrent capability. And what options first of all does japan have no . Not very many. Mr abe is increasingly angry and disappointed by what has happened. This is the third time they have fired a missile over japan, and already the mood injapan is pretty febrile when it comes to a threat from north korea. Storm mr abe will want to condemn this, he will want to see those already tough International Sanctions threatened, but there is no evidence that this is the telling them when it comes to these tests, and all the other options, military force as a deterrent, isnt working. Military action is so unpalatable, definitely action is so unpalatable, definitely a last resort. Ultimately i think there will have to be some effort to get talks restarted with the North Koreans. The problem at the moment as they have shown really no willingness to engage in talks and therefore the International Community is going to be engaged in a state of collective head scratching beyond very obvious rhetorical denunciation of the north. Presumably they will have to start thinking about tougher measures but what they might look like is anyones guess at this stage. I was going to ask you that. What is left, if people would sit down around a table, what can happen next . What will the Trump Administration be reflecting on . Some have been talking in washington in recent days of the possibility of not only tightening economic sanctions but mechanisms that would delegitimise north korea. This is a rogue regime, and one possible approach is to adopt a two headed approach, to offer the North Koreans to membership of the International Community effort reforms its behaviour but at the same time sent a very clear message that if it continues to act in this provocative fashion then its status as an independent sovereign actor will be further questioned by the International Community, and the leader of north korea is somebody who bethink is anxious about his own status at home, has long term sustainability, and there may be some voices increasingly more vocal in washington that the United States should be taking more covert action, using propaganda and seeking to destabilise the region from within. It may be possible President Trump embraces that approach and that raises uncertainty over the long sensibility of the regime and of the peninsular and the wider region. Thank you very much. We will be discussing