In the Weather Center because it happens to be the hottest day of the year and that mean it is a weather alert day. It is not just the heat, erika it is the humidity as well. Most of us are under a heat advisory for another two hours just excruciating out there you really need to take it easy. Look how hot it feels now in your neighborhood. Still feeling like 105 degrees in washington, 110 in frederick. 101 in manassas. A heat advisory for areas east of the blue ridge this goes now through loudoun, Frederick Fauquier and Prince William county. The d. C. Metro area until 8 00 this evening. So looking at the radar right now, cause we are not just dealing with the heat and humidity, but i think storms overnight as well, we are dry in our immediate area, but look at this impressive line of thunderstorms moving toward the area. They hold together, all else remains equal. Impact frederick about 1 a. M. Washington, 2 a. M. So its hot and humid this evening and then potentially some thunderstorms to wake you up overnight tonight and because the atmosphere is so humid, we cant rule out the possibility of some flash flooding if these storms do hold together. So, this evening taking the dog out, 8 p. M. , 91 degrees, but still feeling like temperatures are between 95 and 100. Some patchy fog could form overnight because of the humidity and 2 a. M. Thats when we will be tracking the potential for some thunderstorms and temperature at that point of 83 degrees. And of course, earlier today, we sent you an alert about todays heat advisory. If you have our nbc washington app. Right now you can take a look at six things you need to know to beat the heat and remember, you can always get our storm team4 forecast in the nbc4 washington app and also the radar there. I will continue to be tracking the heat and humidity but the thunderstorms overnight tonight as well, erika. Thanks amelia. Pools in the district are staying open until 8 00 tonight to help people stay cool and there are cooling centers throughout the area, as news4s derrick ward reports lots of you are switching up your weekend routines, trying to beat the heat. Reporter with dangerously hot temperatures forecast, people still tried get in outdoor activities. This woman is a personal fitness trainer. We try to do it early cause it gets hotter in the day. Reporter what about when the early temperatures were in the 90s . Drink a lot of water. Hydrate less. The gym does get routine. We see her in the gym and she started in boot camp for us. So i will come out. Reporter she says she keeps a keen eye on her clients for the signs the sheet getting to them, got advice for anyone out in it. Feeling dizzy, winded, you know, just stop. Reporter while staying hydrate old the inside is extremely important in this extreme heat, a lot of little ones were just as thrilled to get water on their outsides. At the turkey thicket recreation center, the splash park was a big attraction part of the cooling plan for the day for this family. Hitting the park early, right, and then we are going to go to ikea. Reporter the district opened up a series of cooling centers when the heat index reaches 95 degrees. Go to our website or the channel four mobile app for map of their location. Derrick ward news4. A second biker dies from a horrible crash in north carolina. News4s Darcy Spencer joins us from the newsroom with the virginia mans name and the new details about the wreck. Darcy . Reporter erika the second victim has been identified as Kenneth Jefferson of chesterfield, virginia. There was a Prayer Service held today in richmond in his people rained today, we are hearing for the first time from the leader of that Motorcycle Club about this tragedy. The bikers were on their way to a motorcycle rally when the driver of a tractor trailer apparently fell asleep at the wheel and slammed into six motorcycle riders. They were all part of that club. They had stopped along the shoulder of the highway because one of the bike also a mechanical problem. That crash happened about 6 30 friday morning on i85 in the greensboro area of north carolina. The victims were members of the black eagle riders club. They were on their way to a bikers rally in atlanta. Police there say daniel serna, pictured here, play is fallen asleep behind the wheel of his big rig when he crashed into the bikers and kept going. Police previously announced that arnie morris of woodbridge died in the crash. Jefferson was remembered by the leaders of the club today as a very outgoing person. He loved riding motorcycles. That was his favorite thing to do out here. We called him networker, he loved meeting people, he loved just being out there, his personality. Reporter the latest on this investigation, police say the truck driver was not under the influence of any alcohol or drugs. He has been charged with felony hit and run. Back to you, erika. Thanks, darcy. Another deadly accident took the life of a motorcyclist in gaithersburg. The cyclist along frederick road when the car made a uturn and ran right into him last night. The biker died at the hospital this morning. Two people in the car were not hurt. Montgomery county police are still investigating this crash. They have not charged anybody in this incident yet. A dom mix assault call in Prince Georges County he is scam lates to a shooting that puts a suspect and Police Officer into the hospital. Police say a bladensburg officer tried to arrest the suspect outside a house on kennel worth avenue early this morning but the suspect reportedly jumped in his car and pinned the officer to another vehicle. The officer fired his weapon. Both men were hurt but survived their injuries. No word yet on any charges. A mother says half her heart is left following the fifth Service Member death in that attack on a military recruiting center in tennessee. The mother of navy pet at this time officer Randall Smith visited a makeshift memorial today at the site of thursdays deadly shootings in chattanooga. Four marines died that day. Randall died from his injuries yesterday. Now, all their families are preparing for funerals. He has been my hero since the day ic gave birth to him. He is my life. He is my world. My son is a hero. He died doing what he loved. He would have it no other watch investigators are interviewing those who knew the accused gunman killed in the attack. Tracking his reported ties to radical islam, tennessees governor wants a review of safety procedures the other military installations in the state. Donald trump still catching heat over his explosive comments about senator john mccains military service. Find out how the real estate mogul is answering his critics. Tomorrow morning, the cuban flag rise again at what will become the Cuban Embassy here in d. C. How crews are getting ready for the historic day. I was just, like kicking and screaming. And see what happened when a shark attacked a professional su iran keeps their nuclear facilities. Military sites can go uninspected. Restrictions end after 10 years. Then iran could build a Nuclear Weapon in two months. Iran has violated 20 International Agreements and is the leading state sponsor of terrorism. 20 seconds of absolute terror playing out on live tv as a surfer gets attacked by a shark. The attack happened during a competition in south africa today and you can see the shark thrashing violently in the water while the surfer struggles to stay on his board. He manages to get in a few punches. Mir rack cuiously he is not hurt but he says it is likely he will never compete again. It was dragging me. I felt like it was just dragging me under water and all of a sudden, my leg wrap broke and all of a sudden stated swimming and screaming. Yeah, im totally fine. I got nothing wrong with me just, like, a small depression in my board and line burnt and totally tripping out. Yeah, i would be too. Rescuers got there quickly and pulled them to safely. They canceled the final round of the competition. You can go to our nbc washington Facebook Page to hear more from the surfer and watch that video again. Tomorrow will be another weather alert day because of the heat and the humidity and the increased levels of ozone. Amelias going to show us how hot its going to feel in our neighborhoods. And dramatic video shows the dangers of driving on flooded from splash to crash. These are the dangerous conditions a news photographer caught on camera today following heavy thunderstorms in north carolina. The camera sum around in time to catch this car hydroplane and skid sideways into a ditch. The photographer said the three people in that car were able to climb out through the drivers side window. No word on the extent of their injuries. Donald trump is not backing down on his comments that have now inflamed the republican president ial race. On abcs this week today trump says he will continue to say what he wants. During a gop Forum Saturday trump dismissed senator john mccains reputation as a war hero. Several republican president ial candidates quickly condemned the disparaging remarks. Trump released a statement this morning saying he has always supported veterans. Theres been a small explosion at the National Institute of standards and technology in gaithersburg. We confirmed this happened on the campus around 7 30 saturday evening. A spokesperson tells us that a member of their Security Force was, in fact hurt. He was taken to a local trauma center. We are told he is expected to survive those injuries. Montgomery county police are investigating this explosion. Nist is a Government Agency responsible for National Standards such as length, volume and mass. Tomorrow the cuban flag will once again fly in d. C. Thats when the u. S. Intersection becomes the Cuban Embassy. A flag pole is up outside the building on 16th street and we saw workers making lastminute preps today ahead of the formal ceremony tomorrow. Cubas flag will also be added in the lobby of the u. S. State department, which has the flags of 150 nations. Boy, what a day. It is oppressive out there. And really the thing to keep in mind is that its dangerous if youre out there for a long period of time. Yeah definitely one of the days, tomorrow as well, you need to be drinking plenty of water, limiting your Time Outdoors you have an elderly neighbor, especially if you know they dont have erining can, you want to check in on them. Because of the heat, humidity and increased levels of ozone once again, tomorrow will be a storm team4 weather alert day. Tomorrow will be in tomorrow morning, tracking the conditions across the area and updating exactly how hot its going to feel in your neighborhood. Heat and humidity continue on tuesday. Not as bad, but still up there. By wednesday lower humidity, really nice day shaping up. Here is the latest on the air quality alert in affect for tomorrow. All of the counties in gray, this includes the d. C. Metro area as well as Prince William county, southern maryland, loudoun and frederick counties. In is a code orange air quality alert. And its due to increased levels of ozone at the surface. You need to be especially aware of children, elderly and if you have respiratory or heart issues you shall want to limit your Time Outdoors. Tomorrow, your weather impact for tomorrow having a moderate to high impact on your day. Not only will it be hot and humid again, but thunderstorms are also possible, mainly during the afternoon hours. Here is a look at current temperatures across the area. We are still in the low to middle 90s, 95 in washington, 91 gaithersburg, 95 in leesburg. Our official High Temperature today at Regan National 98 you were watching news4 today, i was talking about how today is going to be the hottest day so far this year. And it was. When you factored in the humidity, it felt close to 110 degrees in many locations this afternoon. So, we are dealing with the heat and humidity through tuesday. And right now, on the satellite and radar, also keeping a close eye on this line of thunderstorms thats leaving ohio now and making its way into west virginia. If this holds together it could bring us some heavy rain overnight tonight around 2 a. M. You can keep up with me on facebook and twitter this evening as i continue to give updates on that line and track the exact timing, cause it is so humid, we could see some heavy rain and some areas of flash flooding because of how much rain we have had fall so far. Lows tonight, only in the 70s, walks, around 80 a high tomorrow of 95 degrees. When you factor in the humidity this is what it if will feel like throughout the day 2 p. M. Feeling like 103 in washington, 101, leesburg, 5 00, much of the same. Still feeling about 103 in walks. So another day, you need to take it easy. Again thats why it is a weather alert e9n tuesday, 92. Better chance of thunderstorms mainly later in the day. Wednesday, thursday, friday, and saturday erika looking great, low humidity, High Temperatures around 90 degrees. Thanks, amelia. Ice cream lovers rejoice. Today is National Ice Cream day. Lots of places are doing promotions, including baskinrobbins, Cold Stone Creamery and friendlys. Couldnt come at a better time, right. If you are not sure what flavor to pick, a special media study by net base says chocolate is by far, the most popular. You can open our app to find some of the best ice cream shops in our area and tell us your gave roipt our nbc washington Facebook Page. The power outage continues at nats park, but this time, oh, no we are not talking about the geico has sent me to old town, alexandria to ask folks some questions about the area. Lets go. What common snack was first grown right here in virginia . Grapes . Peanuts peanuts fresh roasted peanuts man laughs peanuts did that surprise you . That was very surprising you know what else might surprise you . Geico is the number one auto insurer in the d. C. Metropolitan area. Call or click today to see how much you could save with geico. What a gay to be at nats park. Number one its hot. It is hot. And then on top of that, it is Star Wars Day . Weres the costume q . I was dressed up as chewbacca early on. The heat and humidity im telling, the heat and humidity got to me, i had to take off the chewbacca costume put on the polo, so i could be good to o for this sportscast. Sorry, maybe next year i will wear the chewbacca outfit a busy day here at nationals park. Unfortunately the nats unable to win their series against the los angeles dodgers. Give l. A. A lot of credit they threw some great pitchers on the mound this weekend here at the ballpark. Take you to the action right now and show you how this game went down. Rubber match between the nationals and dodgers. Plenty of interesting costumes to see at nats park today with the star wars theme. Early on, max scherzer using the top of the first a bases loaded jam here. Yasiel pugh down streaking, one of eight strikeouts on date for mad max. Top of the fourth man on third, scherzer still on the mound. This ball gets away from his catcher, wilson aramos. Andre ethier coming home from third. Ramos throw off the mark. Dodgers score on the wild pitch, six innings eight strikeout, just that one allowed for scherzer today. Right or wrong zack greinke pretty much unhittable in the fourth. Escobar to go down. Bryce harper strikes out in the seventh, he is not happy about t later it is wilson aramos. Ramos goes down swinging. Excuse me, pugh puig in the top of the ninth. Two runs come in to score, dodgers, they beat the nat buys a final score of 50. They take the series thanks to a dominant appearance this weekend. I love facing the best, right now he is the best started the allstar game i always enjoyed facing the best. You want to go out there and compete with him and compete as hard as you can, i enter went out there and gave everything i got. I got beat today. Give him a a lot of credit. Last two guys a lot of good pitchers, swung out of the strike zone, made good pitches as well. You know, the results are the results. Look forward to tomorrow. Anything from the bench, guys. Orioles visiting the tigers. Everybody loving National Ice Cream day. Os facing cy young Award Winners much yesterday, david price. Today, justin verlander, top of the fourth bases loaded for jj hardee, the shortstop takes verlander right to the wall two runs come in to score easy, chris davis being sent, here is the relay throw and davis, he is out at the plate. Either way, tworun double for jj hardy. The os go up 31. More trouble with verlander men on the concern. Jonathan scope tees off. But that ball is fair a threerun blast. The birds chase ver lander after 3 2 3rds innings seven runs allowed, orioles win their first series since june 28th, beat the tigers by a final score of 93. Good baseball being played this weekend, lets move over to golf now the british open taking place, a lot of talk about the conditions, the weather the wind, the rain, the play of the greens. Now we are finally talking about some good golf being played. The leader board at st. A drews, a fulltime job these days. Lots of movement. One of the guys moving was Louis Oosthuizen oosthuizen. This is going to land right next to the cup. Woe tap in for birdie. Tied for the lead at 12 under, oosthuizen. Surprise of the day had to be the amateur, paul dunn from ireland. Here on 7, his putt up the hill, its gonna roll right in for the birdie. He was making up some ground and up on that leader board. Then later on 15, looking for his sixth bird down the day he gets that to drop, put dunn at 12 under. Joins oosthuizen and day for a threeway tie for first meeting final round tomorrow. Turning to nascar now, packed house at the New Hampshire motor speedway. On board with kyle busch as he goes for his third win, last four race. 97th lapp drama on pit row, pitting for a front right tire that caught on fire. The crew gets it changed. He is out. The number 7 car gets sent back in. The fire reignites, engulf the front of his car. The crew calling bowman back. He gets the stop and climb out uninjured. Didnt get back in the race. Finished 42nd. Kyle Busch Holding off a late surge today from brad keselowski. Busch captures his third victory of the season. Also his third in the last four races. Lets head back to nats park for a quick moment now. Despite the loss fans having a great time on Star Wars Day, costumes everywhere. Storm troopers, jedis, even the racing president s got in on the action. Unfortunately, in the end, darth vader may have used the force against the nationals. They were unable to beat the dodgers. Erika, back to you. Thanks so much, jason. Greet see you. See you later. Just a reminder that tomorrow is a weather alert day. Its because of the heat humidity, temperatures feeling like they are between 100 and iran keeps their nuclear facilities. Military sites can go uninspected. Restrictions end after 10 years. Then iran could build a Nuclear Weapon in two months. Iran has violated 20 International Agreements and is the leading state sponsor of terrorism. On this sunday night, the cosby scandal. Sex, drugs and hush money. New details from Court Documents on how the comedian admitted to buying drugs to seduce women. No apologyies, donald trump after slamming senator john mccains war record as a new candidate seeks to change the conversation. A killers past. Inside the troubled mind of the chattanooga shooter. What his family has revealed about his life. And jaw dropping moment. A pro surfer is forced to fight back after a shark knocks him off his board broadcast on live tv. Nightly news begins now. From nbc news World Headquarters in new york this is