The slowspeed chase in los angeles. Helping police nab the driver so why did he end up in cuffs . Dont worry. Alls well that ends well. Today, saturday may 23rd 2015. Announcer from nbc news this is today with lester holt and erica hill. Live from studio 1a in rockefeller plaza. And welcome to today on this saturday morning. Im erica hill. Im Thomas Roberts in for lester. Sheinelle jones and dylan dreyer are here. We have a great morning here because it is fleet week. We have the men and women of the Armed Services on the plaza looking sharp. We love. That what a great way to start this. This is the unofficial start of summer. We dont want to forget the reason we have memorial day and thank the men and women who are serving. Looking forward to seeing them in a bit. We will have a tugofwar battle coming up this morning. And we also have an onset battle with the stripes and solids. We will break it all down and have winners by 9 00. We want to get to the top story this morning. Potential for recordbreaking flooding in the south. Parts of texas could see up to 10 inches when it is said and done. This morning, residents are preparing for the worst. Nbcs mark potter is in wichita falls, texas. Mark good morning. Reporter good morning, thomas. You can see the rising flood waters here. Racing through here about a half mile from downtown. This is normally a bike path. The river itself is on the other side of those trees. Officials thought they were facing a moderate flood that would end soon but they got shocking news this could become a record flood which put many here into overdrive. Racing against time and rising water, county workers and volunteers from the nearby air force base workday and night to fill sand bags to protect neighborhoods along the flooding wichita river. All of this is bagged up and sent out to tanglewood east side, burnet park out of 367 wrangler retreat. Reporter following heavy rain the wichita started to overflow threatening homes along the banks. People were evacuated and power to the homes shut off. Things in the home we propped up on card tables and saw horses. Reporter base based on earlier weather forecasts, they thought the flooding would be moderate. It is all a matter of timing. Reporter then a believing with the National Weather service, a startling update. It will hit hard and heavy. Reporter calling now for a potentially historic flood that could affect thousands of homes and last into next week. Definitely an eye opener. It stunned all of us. Reporter the new prediction suggestions that with more rain coming the river could rise to levels 1 to 3 feet higher than the recordbreaking 2007 flood that swamped nearly 170 homes in wichita falls. Now local officials are revising the evacuation plan and expecting more help from the state. The irony, the area was facing a severe drought and running out of drinking water. Now this. Thank you, mark. Dylan is tracking the weather in the south. Keep in mind this area ends up with 2 to 4 inches of rain for the month of may. They already have 7 to 14 inches of rain in the month of may alone. It is all because of this pattern. We had this steady dip in the jet stream out west that triggers the showers and storms. We have the moisture coming in from the gulf of mexico. Not only do you have downpours with inches of rain. And we see this at amarillo. Not a lot in Central Texas for now. The trigger is there. We will see more heavy rain redevelop later on today. We have flash flood watches from Kansas City Missouri to southern texas. This is because when the storms develop, they produce 1 to 2 inches of rain as they move through the area. That leads to more flash flooding. We do have this chance of showers and storms but most severe from denver down to dallas and into southwestern texas. We are looking at large hail and damaging wind gusts. We could see isolated tornadoes as well. As far as the rain it will redevelop later on today with another perhaps 4 to 5 inches of rain possible. Erica. Dylan, thanks. Memorial day is the unofficial start to summer. A chance for millions of americans to get outside and enjoy themselves. Maybe go visit friends and family. This weekend, an estimated 37 million americans expecting to hit the roads and skies. About 33 million will be driving to their destination. According to aaa, this is the first time in ten years that this many people are traveling over the memorial day Holiday Weekend. The last time we saw numbers anywhere close to that back in 2005 when the peak was 44 million. All of this could be contributed to the fact we have low gas prices. National average is 2. 66 a gallon. It is still 1 less than this time a year ago. Of course as people are getting ready to hit the road we are hoping whenever they are, maybe they will find a bit of sense. A broader forecast for those hitting the roads. The eastern half is where we will see the gorgeous weather. High pressure system bringing nice conditions up the east coast. There is snow in caribou, maine. We sit 70s on the east coast on sunday. Stronger storms down south. The west coast looks nice but rockies will see showers and storms. Monday we could feel the heat. Especially through d. C. Where it will be 90 degrees by memorial day. Still looking at the threat of strong storms through eastern texas on memorial day itself. That is again an area where they are not really enjoying the barbecue but it is too soggy and too much flooding. Dylan, thanks. The search is on for at least one other person in connection with the horrific murders of the washington, d. C. Mansion last week. One man charged with murder but police say he likely had help. Nbcs Kelly Odonnell has more. Reporter good morning, thomas. The question is who else is out there. Without explaining why they have the suspension Authorities Say they believe that more than one person was likely involved in the crime. A Home Invasion and a murder of the wealthy family and housekeeper. One suspect is behind bars but who and where are the other possible perpetrators . Unsealed Court Records reveal troubling details about the firy murder scene in the d. C. Mansion. Investigators contend the hostage taking for ransom and the killings required the presence and assistance of more than one person. One man is in jail this morning. 34yearold Daron Dylon Wint who appeared in court friday charged with first degree murder. Mr. Wint is now incarcerated and held without bond. Our work is not done. Reporter Authorities Say that the savopoulos family and housekeeper were held captive by mr. Wint and others until the 40,000 was delivered to the home. Another delivery was crucial. The night before the murders, documents show Amy Savopoulos ordered pizza by credit card and gave unusual delivery instructions. Noting she would not come to the door and the delivery person was to place the two pizzas on the porch and ring the door bell and leave. Authorities say dna found on pizza crust was linked to Daron Dylon Wint. The suspects had been beaten and stabbed. Phillip was found on a bed badly burned. Authorities tracked cell phones to wint to follow his movements to brooklyn, new york where this video shows part of the manhunt. Back to the d. C. Area where he was captured late thursday along with others who had not been charged. We had the four vehicles and surrounded the box truck. Everybody gave up. Reporter friday night, loved ones of the housekeeper gathered to remember her. Another curious description in the police affidavit. A witness who worked for savopoulos and took part in the delivering the money changed aspects about the money drop. It is unclear if that will become significant. A lawyer for the suspect Daron Dylon Wint called the case against him circumstantial. Thomas. Kelly, thank you. History is being made today in ireland with voters across the catholic country saying yes to gay marriage. Nbcs chief global correspondent bill neely joins us. Reporter good morning, erica, from dublin. The counting is almost over and the vote is set to make history. In the u. S. The issue is decided by individual states and supreme court. Here in ireland, they do things differently. Everyone decides. Its the big day in ireland. One couple voting yes on their wedding day to samesex marriage. If you wanted to you should get married just like we have today. Reporter ireland is asking all its people yes or no to gay marriage. The vote counting suggests yes will be the answer. For many it will be a personal victory. Im asking the person i love and me be treated the same way any other couple is treated. Reporter ireland was one of europes most traditional conservative and catholic countries, but the churchs power faded and homosexuality and divorce becoming legal two decades ago. In many rural areas and many older men, legalizing gay marriage is a step too far. One they may now have to accept. It is a change irelands Prime Minister pushed. It is removing inequality. Reporter for critics of what may become the new law this is a bad day. Every child has a right to a mother and father. Reporter but all the signs suggest campaigners for samesex marriage can celebrate a historic change as ireland becomes the first country in the world to legalize it in a national vote. And leaders from both sides are now accepting the yes campaign has won. The only question is how big is their margin of victory. Many people in the country are still rubbing their eyes in disbelief at how far and how fast ireland has changed socially from a deeply conservative to a liberal country. Erica. Big change in a short period of time. Bill nice to see you. Thank you. The senate had a busy overnight session on the blocking of the nsa collection. Sheinelle is here. We think they would high tileail it out for the weekend. It now hangs in the balance set to expire in a week. The senate will reportedly return to work next sunday in homes of hammering out the 11th hour deal. The senate voted the request for fast track negotiating authorities with trade agreements that congress can ratify or reject but not change. Now to california where at least five dead pelicans have been discovered near the site of the oil spill. The tuesday spill from the underground pipe leak near Santa Barbara covers ten square miles. It is harder to skim from the choppy waters. Campgrounds are closed until june while clean up efforts continue. A bizarre slowspeed chase through the streets of los angeles came to an end friday after a Good Samaritan took matters into his hands. It started when the driver in the convertible with signs of victory, refused commands to pull over by police. It went on for miles until a Good Samaritan walked in front of the car. He was brave. He stood in front of the guns aimed at him. The trigger could have gone off. Both men taken into custody. The driver is facing several charges. The navy says a pilot safely ejected before his jet crashed into San Diego Bay friday. Nearby boaters rescued the pilot from the bay that separates the naval base from downtown san diego. The navy says the pilot evaluated at a hospital was training for aircraft landing qualify indications when the crash occurred. And Daredevil Nik Wallenda took his act across the high wire 70 feet in the air to the mall from the casino. Along the way, wallenda paused to lie down and take a break before making it across. Why not . Im a little tired. Ill wait for a second. You would not see me do that. You would not see me do that at all. Good for him and other successful walks. Congratulations. Sheinelle, thanks. Dylan is back with the rest of the forecast. You are getting paid by appearance . Local weather folks, get ready. Thats it. Thats the look at the weather across the country. Now here is a peek out your window. And thats your latest forecast. Dylan, thanks. We had a few people writing in over the last weekend. They were not with us last weekend when you talked about your new hardware here. I tried to hide it in longer sleeve shirts but they dont fit. A fractured a bone in my hand. I dont know how or when. It is old. They took out the bone. They said it is like the appendix of your hand. Im recovering. If you check your twitter feed, there is a diagram of your hand. We drew the diagram. A hook of ham8 bone. It is not there. The best medical explanation. We play doctors just on tv. I hope to golf by midsummer. So coming up security stepped up as hundreds of thousands of bikers gather for rallies in honor of the men and women who serve this country. All of this comes less than a week after the deadly shootout in waco texas. With more here is nbcs Stephanie Gosk. Reporter memorial day is not just a big weekend for barbecues, the big weekend for bikers. Rallies are set to take place from new mexico to washington, d. C. Red river, new mexico expects 20,000 bikes. In atlantic beach, South Carolina 400,000. In d. C. 900,000 will ride in the Rolling Thunder ride for freedom rally to honor the u. S. Military. Some are decades long traditions. After a shootout this week with gangs in waco texas, left nine dead cities across the country are taking extra precautions. One gang involved cossacks was rallying in ft. Worth. It is now canceled. And now extra reason to be vigilant. Last year, three were killed during bike fest. The governor asked the organizer organizers to cancel but they did not want to. They will have three times more police. Some feel they are treated unfairly. The vast majority like to ride. They dont blend in with society. Reporter as for the threat the shooting in texas is considered an anomaly. Motorcycle gangs are not perceived as that significant a threat. Not by many other things the fbi does. Reporter on a weekend when motorcycles will be out in zillions the police are not changing chances. For today Stephanie Gosk nbc news. And the race to the Oil Spill Clean up to the ending of David Lettermans show we bring it to you in the download. First this is today on nbc. Download. We take a few minutes to bring you the stories. A lot from isis taking more territory in the middle east and the Red Nose Campaign to help kids in poverty. We start with the killer in washington, d. C. And the mansion murders. A shocking murder mystery in the nations capital. Family found dead. This is a crime scene. Savvas savopoulos and his wife amy and son and housekeeper were likely held captive overnight. The break in the case is a dna from the pizza crust traced to Daron Dylon Wint. After a twoday manhunt, the suspect is in custody. As authorities investigate who else is involved. And isis is gaining ground in the middle east. Humveess packed with military. And walking ramadis empty streets. The fall of ramadi is the big blow to the u. S. Hundreds of americans died fighting for the iraqi city. Isis has not slowed down. It seized down and hitting palmyra in syria. The terrorists sanctuary across syria and iraq is larger than a small european country. Along the california coast crews racing to contain an oil spill. As much as 105,000 gallons may have leaked from a broken pipeline near Santa Barbara. Two slicks stretch nine miles. Boats with booms trying to contain the crude oil. A big mess. It was contained quickly, but oil did get into the ocean. Its beginning to look like im not going to get the tonight show. A final curtain call for David Letterman who shaped late night tv. Our Long National nightmare is over. And alist insults in one top ten list. The extensive Plastic Surgery was a necessity and a mistake. The only thing i have left to do on a television program. Thank you and good night. Three, two, one and a look back at matt lauers tour de red nose. Go matt go all right, lauer ive been out here since 2009. Lester holt. Whats going on . I have a lot of people i would put on spandex. Youre not tired . Welcome home, matt lauer you raised 150,000. Yes. For the red nose day campaign. What a huge success for matt. You got in on the action. You did a little dancing. I went to nick cannons danceathon. You see the shoes . He let me put on the expensive shoes. I wear a 13. He wears a 12. He says i stretched them out. Now you can keep them . He didnt send them over yet. Look at that. I didnt split my pants. Very happy about that. Im impressed. You do yoga and pilates. I just dance at home a lot. Now the truth comes out. The truth comes out. I have to say i loved watching David Letterman. A very sweet and very letterman goodbye. It was. Classy and the top ten list was hilarious. You have to see it. Yes. Star studded. Here we go. I dont think we can hear it. Some great one liners on that top ten list. Yeah. A nice send off. I was just blown away by how quickly his set was just thrown out. Yeah. Its just gone. All out in the dumpster. Somebody has to be able to take it. A pick of dave with the bat. There he is. Instead of selling for charity. Were done. Hes out. Were back right after this. Good morning. Im rosemary connor. Its 7 25 on this saturday. Its a little bit cool outside on this memorial day weekend. Lets get a check from Brittany Shipp. It is a cold start in the poke knows poconos, 37 degrees. 68 degrees today, tomorrow 68. On monday down the shore 74 degrees while temperatures inland on monday closer to 90 degrees. Rosemary . Thank you. New from overnight a fire at this house under construction in south philly could be a case of arson. Nbc 10 was on jackson street just after midnight where flames damaged a floor and walls. Investigators are checking to see whether an accelerant was used to start the fire. Another fire overnight happened just after 3 00 this morning on south broad street. Investigators are looking into the cause of the blaze. A lot of folks are headed to the shore or delaware beaches this memorial day, some are sticking a little closer to home. Nbc 10 was at harbor park last night and it was parke