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the second perjury trial for roger clemens is scheduled to begin tomorrow in the district. federal prosecutors slipped up last july when they showed jurors evidence that wasn't allowed in court, forcing a mistrial. the department of justice is not taking any chances during this trial. they've added three new lawyers to the case. clemens is charged with perjury and obstruction of congress for lying about using performance-enhancing drugs. he could face up to 30 years in jail if he's convicted. in april 1862, d.c. was ahead of the curve on an issue that would lead this country to war within itself. and eventually freedom for millions of enslaved africans.

monday will mark the 150th anniversary of the d.c. emancipation day. nbc's derrick ward has more. >> in fort greble park, more discussion for the d.c. emancipation day. why here? this was the spot during the civil war. they built the labor works that still survive. >> they helped build some of them, they set up camps around the area. they were called contraband camps. >> then d.c. slaves were freed nine months before the broader emancipation. >> you don't have to look far to realize the historical emancipation and what it was to free the slaves here in washington, d.c. >> there's so much history here in d.c. >> the history behind the proclamation that freed slaves

150 years ago is where people came to observe the anniversary. >> it's history, and everyone should record their history. this is part of american history. >> reporter: the proclamation declared the d.c. slaveholders be compensated. the federal government paid more than a million dollars, no small amount in 1862 dollars. >> he wrote an announcement of the proclamation. >> it paved the way for who i am today. >> we are a people that came out of a very, very critical struggle and we're trying. and still we rise. >> derrick ward, news4. >> tomorrow marks the anniversary of the actual d.c. emancipation proclamation. chuck, what kind of day are they going to get? >> near record warmth for tomorrow. we'll easily be back in the 80s

tomorrow, so a lot of mild weather. nearly 20 degrees warmer than average around here. not typical for april standards for sure, but i didn't hear a single complaint outside today. good day to get outside and row up and down the potomac or maybe just sit out on your favorite lawn chair. these folks are working hard, and in warm weather like this breaking a sweat, no doubt about it. this guy right here, you know, that looks fun. i like it. it looks like he's chained to the board. i guess to keep it from floating away. my colleague, tom curine, is an active kayaker. i'm sure he was out in ms. boat today. 83 degrees for a high temperature today. now we're back to a bone-chilling 75. it's mild up and down the eastern seaboard. 79 here, 63 in minneapolis. a hint of a bay breeze along the

coastline. the bay is still a little bit on the cold side from a swimming perspective. no rain around here with all the sunshine we've been enjoying. the closest raindrops to us along the warm front, those are the same sprinkly thing we had to deal with. tomorrow they're running the boston marathon. it's going to be in the 80s in massachusetts tomorrow. middle of the country, powerhouse thunderstorms again today. this time it's in the twin cities the western side of wisconsin and just a chilly rain across parts of nebraska. further down to the south, st. louis to little rock, showers and thunderstorms. some of them quite severe down here, but unlike yesterday, just straight hard winds and damaging hail. no bargain, but nothing compared to yesterday. for us, what a mild evening and mild overnight we're in store for. holding to the upper 50s and low

60s. we'll start out with a beautiful work week, no doubt about it. a weather front is going to try to sneak its way in here. it will bring some cooler air in for tuesday, but i think any shower chances hold off in the metro area, at least until we get to wednesday. so this evening, partly cloudy, mild and dry. evening temperatures, mid-70s now, into the upper 60s by 11:00. partly cloudy, nowhere near chilly. tomorrow back to work, back to school, everybody. outdoor recess tomorrow for sure. the record tomorrow is 92. so i don't think we're going to get there, but we might be within four or five degrees of it. as i say, about 85 here in town, but i think somewhere in central virginia may still make it to about 90 degrees tomorrow. scattered shower chances west of the metro area tuesday. everybody has at least a chance for showers on wednesday. beautiful april weather thursday-friday. as you get into friday night, saturday, next weekend, maybe a little on the stormy side around

here. we'll keep you co-host odd on that all week. coming up in sports tonight, the nationals get defensive, but another extra inning affair what makes the sleep number store different? the sleep number bed. the magic of this bed is that you're sleeping on something that conforms to your individual shape. wow! that feels really good. you can adjust it to whatever your needs are. so whatever you feel like, the sleep number bed's going to provide it for you. now, sleep number redefines memory foam, combining coolfit gel foam with sleep number adjustability! during our white sale, receive $400 in free bedding. only at the sleep number store, where queen mattresses start at just $699.

we're hoping to sweep this

poor game series. >> unfortunately, you can't win every single game you play. the nationals were playing so well, i think everybody thought they were going to win for a while. the nationals are scored for the game of baseball. they had a major league best era of 1.75. the bullpen era, 1.98 was the third best in the majors, but nobody is perfect, and today the nationals pitcher struggled a bit. jackie robinson day today in baseball. all players wearing his number 42. in trouble with the bases loaded. ryan ludwig just gets into one, launches at the center field and that's over the fence for a grand slam. cincy up 4-0. detweiler only gives up one major run. ian desmond up with a man on, already has two hits in the game. how about three? sends one up the middle.

he has wheels. beats the thrower, tied at 5, and this one is going to extra innings. still tied in the 11th. tyler clipper facing william valdez. robbed by ryan zimmerman, great diving catch there. clipper facing joey vado. vado going opposite field, over the head of mike verosa. clippers take the loss and the nationals fall 8-5. back at it tomorrow against houston as steven straussberg makes his third start of the year. the orioles taking on the bluejays. top six tied at 1. kyle dravac and jones just punishing this one. a solo home run.

he has a nine-game hitting streak, does james. brian matis starring for them today. gives toronto a 2-3 lead to the jaz. they go on to route the orioles 9-2. the o's dropped 5-4 on the season. boston all tied up thanks to nick backstrom's game-winning goal. the goalie has been outstanding, stopping 72 of 74 shots. dale hunter squashed any controversy that could arrive when his other two goalies are healthy, saying today, opi is our guy. he gets the save right here. he had a career high 43, kept his team in the game.

and then in double overtime, backstrom loses the face up. the rest is good. caps win it 2-1. game 3 in d.c. tomorrow night. the kapt tocapitols hoping for the same from their rookie goalie. >> obviously there is a lot of talk of the first two games, though not low scoring, especially goal tending, but my game really didn't change too much. it was basically the way we played, it was the way the game was played as a whole. that's why i was successful. i want to work on some things, i want to be better for -- get better throughout the series, and right now we just got game 3. >> he came in skpeez playing like a veteran. it's comforting for us to see as players and just to see how comfortable he is back there. >> cindy crosby and the penguins

down 0-3. game 3 in philly and this one was chippy to say the least. fighting ensues. this game was crazy. just punishing people. the theme throughout this one, gloves and helmets were flying. he knocks away the helmet with his stick. he doesn't like it and the two go at it. you don't see cyd the kid getting at it too often. while that's going in, chris letang going at it. this was absolute mayhem and people were loving it. brady shinn makes a hard hit. 72 penalty minutes assessed in the first period alone. in the third, scott hartnell and craig adams fighting. adams gets hartnell's hair. apparently you're not supposed to pull hair in hockey.

unless the penns flew off at the red sox titans' comeback, this series is all but over. >> you can't pull the man's hair. >> fighting. come on. >> that's our news for now. >> that's our news for now. we'll be back here news4 at

captions paid for by nbc-universal television good evening. on the heels of last night's massive and deadly midwest tornado outbreak, all the ingredients are in place for more dangerous weather this evening. this afternoon possible severe thunderstorms and tornadoes, in areas stretching from arkansas, northward to parts of minnesota. yesterday through dawn this morning, experts counted at least 122 reported tornadoes across four states. including one that killed five people in northwestern oklahoma, and injured more than two dozen. so potent was this system, government forecasters took the unusual step of warning of life-threatening conditions, more than 24 hours in advance, a warning that may have saved countless lives. nbc's jay gray has our report from the hard-hit town of

woodward, oklahoma. >> coming right across the highway here. >> reporter: more than 100 tornadoes sliced through the central and southern plains. at one time, two funnels dropping from the clouds in oklahoma. the violent system blasted through nebraska, iowa and kansas, tearing away anything in its path. >> everything is gone. everything we've worked for all of our lives. >> reporter: the intensity of the storms was evident when it moved into oklahoma, tossing an suv. >> call it like it is. this is now becoming a killer tornado. >> reporter: as the afternoon gave way tonight, the assault continued. tough to see in the dark, sometimes the tornado revealed by a flash of lightning. the damage left behind is clear and overwhelming in the light of day. >> just a devastating, frustrating thing. oh, my. i'm almost at no words over it. it's -- i've never dealt with

anything like it before. >> reporter: few in woodward, oklahoma, have. >> you could hear people screaming. down the road there. you could hear stuff crashing and breaking. it sounded horrible. >> reporter: five people in woodward were killed in the storm. including a father and his two young children who tried to ride it out in their mobile home. this is all that's left of their neighborhood. the loss is overwhelming this tight-knit community. adding to the grief that warning sirens did not sound. >> i thought about that ever since i found out that we lost five people. so i would think it would have helped, yes. >> reporter: help is something so many across the midwest need tonight. their lives splintered and scattered for miles. survivors left to search for hope and answers in all of this mess. the view from their front doors

forever changed. let's get back to the young family, the single dad and two children who died in the storm. there was a toddler who was rushed to a texas hospital with life-threatening injuries. there's been no update tonight on her condition. ground teams are here in woodward, and across the region, assessing the damage. they've rated it on the ef scale, the tornado spawned in this storm, 1 to 4, which means in some remote areas winds were within 200 miles an hour. in the last few minutes the national weather system said it was an ef-3 storm in woodward. >> thank you, jay gray. a big story that prostitution scandal involving agents and officers of the u.s. secret service. and members of the u.s. military. who were part of the advance team for president obama's trip to the summit of the americas in colombia. tonight there is new fallout and president obama is weighing in for the first time. our white house correspondent

kristen welker is in cartegena tonight with the details. >> reporter: president obama for the first time addressing the secret service scandal that has embarrassed the agency and the administration. >> if it turns out that some of the allegations that have been made in the press are confirmed, then of course i'll be angry. >> reporter: it happened on wednesday night here at the hotel caribe. 11 special agents and uniformed officers, including two supervisors allegedly brought prostitutes back to the hotel where guests have to leave their i.d.s at the front desk. thursday morning hotel managers realized one woman hadn't picked up her i.d. by checkout time, and found her in a room with an agent, fighting after he failed to pay her. the hotel called local police, who alerted the u.s. embassy. ultimately it went all the way to the white house. the secret service members were

sent home before the president arrived friday. five u.s. military members also assigned to protect the president during the trip who may have also been involved have been confined to their quarters in cartegena. prostitution is legal in parts of colombia, but it is a violation of the secret service rules of conduct. in a statement the agency said, the secret service demands more from its employees and these expectations are met and exceeded every day by the vast majority of our work force. members of congress say they will launch their own investigation. >> my committee, we're going to look into all the details of what happened here, to see whether there should be changes in procedures, to see whether or not something should have been noticed before. >> this is really the biggest scandal in the history of the secret service. >> reporter: ron wrote "in the president's secret service" echoed the calls for change in the agency. >> there's a culture in the secret service that's fostered by the management of just

nodding, winking, favoritism, corner cutting. >> reporter: now, the secret service has launched an internal investigation and placed all 11 personnel on administrative leave. lester? >> kristen welker, thank you. we're back in a moment with late breaking developments tonight after a violent day in afghanistan. [ male announcer ] strip away the styling. strip away the rearview monitors, tv screens, bluetooth... and even the cup holders. you know what's left? the only suv's with american-built f-alpha truck frames. the ruggedly capable pathfinder, xterra, armada. ♪ receive up to twenty-five hundred dollars cash back on select nissan suv's. ♪ nighttime is the worst. i can't breathe and forget sleeping. good mornings? not likely! i've tried the pills the sprays even some home remedies.

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once again about the afghan security forces as they have seen greater responsibility for keeping this country safe. they were the most spectacular attacks in kabul since last december. the taliban said this was the beginning of the spring offensive. the american, british and german embassy along with nato headquarters, a hotel, a supermarket and the parliament building just a short distance away. large explosions were heard outside parliament with reports of rockets being fired at the building. there were also attacks in three prove ipss surrounding kabul. the taliban said today's violence was in retaliation of the burning of the koran and other incidents involving u.s. military. afghan forces did fight back. the interior ministry said 17 insurgents were killed. one policeman was also killed and 17 wounded. and lester, the state department called today's attacks cowardly. it's alarming how coordinated

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it was 100 years ago on this day that the "titanic" met its fate striking an iceberg in the north atlantic on its first and last voyage. a century later the fascination only grows. today the spot where the "titanic" went down and where more than 1,500 people were lost wreaths were cast into the water from a ship that traced titanic's voyage. a monument was unvalged in northern ireland where the "titanic" was built. for the first time the names of the victims were listed al betticly without regard to their passenger class on the ship. that will do it for us. that's "nbc nightly news" for this sunday. join me shortly for "dateline." brian williams will be here