a little alberta clipper system races down from the great lakes in our direction. current temperatures to start off your saturday morning have not budged hardly a degree in about the last four, five hours. i don't think they're going to move much. upper 30s to near 40s right now. nothing showing up on doppler just yet. there are some snow showers across parts of pennsylvania, h ho and indiana that's for the of a weak alberta clipper zipping by. it could bring a little bit of light snow and snow flurries out west of the blue ridge into the mountains of west virginia. we'll call it a partly sunny/mostly cloudy day. cold, breezy as well and a northwest wind 12 to 24 miles per hour will keep windchills in the 30s although air temperatures will sneak in the 40s. tomorrow more of the same. i think the clouds will be front loaded in the beginning of the day. by tomorrow afternoon we'll see a little bit in the way of clearing skies and sunshine. full sunshine doesn't come back until monday. we'll be a little sunshine challenged for your weekend. >> thank you, chuck. >> you

that alberta clipper comes in from canada it will compete with the low will dry air and that means it will be academic test whether we generate any snow flurries with those conditions there are lots of wind gusts early this morning in kankakee and along the southern indiana suburban areas ... before the cool air hit it was 57 degrees at 3:00 this morning ... one year ago everyday with the exception of two days was below normal temperatures that month in december the headline of a little flurry is that after coming had tonight and tomorrow we expect 37 degrees the high temperature today by sunday we will warm to 46 degrees with a rain system here monday and tuesday ... here is the forecast we have lake effect snow flurries blowing and to michigan and indiana ... there will likely be a. tomorrow where the snow flurries will ease up. tomorrow morning flurries. later in the day more flurries. there is a load of miles pacific air coming across the area late saturday through sunday bringing the moisture on monday and tuesday showers during the day are expected monday. tomorrow afternoon exp

that's the leading edge of an alberta clipper. it should come through here dry. it's going to reenforce the cool for the weekend. into saturday and sunday, temperatures are going to get a chance to cool down again. up near 50 today. and saturday and sunday, guess what -- >> sun or -- >> no, sunshine. temperatures only in the low 40s. today the daytime high of 51 in washington, d.c. and lighter winds with sunshine. >> so alberta clipper up there. >> yeah, north and west, not here. >> okay. all right. we'll check in in a few. >>> tragedy strikes virginia tech once again. the campus put on lockdown after a police officer is shot ask killed. we have reaction from a stunned campus this morning. police released the photo of the officer killed yesterday afternoon. apparently ambushed during a traffic stop. we are live in the news room with more on this. good morning. >> reporter: good morning. police are trying to figure out what drove the gunman to kill the officer and then turn the gun on himself. the attack stunned the campus nearly five years after the campus suffer

there is an alberta clipper bringing some light snow showers to chicagoland.ouds coming back our way late tonight and western facing parts of the mountain might see the best chance for some light snow accumulations. little weak weather front off to our east will keep the cold air coming on in. that quick clipper zipping on by here late tonight into the early morning hours tomorrow morning. by tomorrow afternoon time, plain old cold air settling in. most of the snow showers dying away very quickly after the sun comes up tomorrow. probably not more than muff to barely whiten the ground. that cold, dry pattern sticks around into early next week. for today a mix of clouds and sunshine. partly sunny the further north and west you go the more cloud cover. the further south a little bit more sunshine. highs today upper 30s to low 40s. windchills in the 30s all day. for tomorrow plenty of clouds maybe a flurry out to the west of d.c. early on in the day tomorrow, then the sunshine comes back tomorrow afternoon staying pretty much on the chilly side around here all wee

there is an alberta clipper that may bring us some snow flurries on saturday but the prospects for ahristmas made depend on elements that may produce more rain and snow >>there are gale force warnings on like michigan many counties along the lake on the michigan side are under wind advisory this storm is tracking to the west south of james spader right now the powerful back side wingsnds is making things a lot cooler ... another storm is developing passing to the self outh we may see a couple of snowflakes by saturday but the milder pacific air will be following a cold front and by sunday for the bears game we should be a bit warmer. the forecast is for all this winter to be continuing at 30 m.p.h. it will come down quickly tonight and will be wendy again when the sun shine returns tomorrow ... it may also get windy saturday afternoon and that will continue sunday ... >> the arctic air continues to bottle up to the north of us. we are 14.5 degrees warmer this december than we were last december so far. what we have is a return to more seasonable temperatures but looking at the next t

it's an alberta clippers' that has come across the area.he visibility is one half a mile at bartlett. it started out here in the west and has been pressing eastward. it's created a mass of in wisconsin. there been traffic accidents on the icy roads. these are high wind advisories. they're already in effect out west as the system comes in in their winter storm warnings in the mountains with big wins south of us today. you can kind of see how it's happening and why it is raining here because these powerful winds cause air to pile up and start to rise. you get rain clouds forming. the big picture here ... this band of clouds across the pacific parallels a 200 mi. per hour just to dreamjet stream that brings masses of mild air with each one. each little buckle in this jet stream that comes in off the pacific makes a rain system so here is the one today but look what happens over the weekend. we say this is an amplified pattern because the jets buckle and pull the arctic air down. this is the forecast by sunday night and monday and that is why w

this disturbance coming out across and this is what we call the alberta clippers, this is stronger than anticipated and that held light snow with it in a few places, north and west and a bit of a dusting and that will continue to pass through the next few hours and that is out of here by midnight or so and that is's chance, 9, 10:00 and something like. that 42 in the city, gaithersburg, 34; dulles, 40 and on to i-81, their temperatures are in the 30s. seven:00, 40 degrees, flurries north and west, cloudy overnight and not as cold as where we were this morning. a nice the warm-up is coming our way. we'll talk about that and there is some cold stuff. shawn? >> was enjoying the warm-up, gary. >> and should have stopped there, right? >> yes, yes, yes. >> i get it wrong every time. i'll work on that. >> see you in a few. thank you. >>> coming up, the video goes viral after a teenager loses his battle with a lifelong heart condition. >>> and also ahead, a local connection revealed after a little girl becomes the victim of a heinous crime. me. >> and it was an automatic. >> and a tremendous sh

we may even have alberta clipper track across the area most of the snow passing north but we could beuesday. clouds under today and this tells the story here, a temperature change the chart 20 degrees colder than 24 hours ago and that not all alone virtually the entire heartland of the country cold air plunging down to the gulf coast as you can see. look at the wind finally starting to let up. blank signs down a grand rapids cost at this hour still going 40 mi. per hour 38 mi. per hour gusts at marquette. where we stand right now gusts earlier in the day at 40 mi. per hour come down. 42 degrees the daytime high temperature today. and the big reservoir of cold air h.l. spending it to the midwest. 34 degrees 23 degrees and minneapolis and 70 degrees alexandria could be a lot worse. factor in the wind and wind chill looks like this across the midwest. 11 degrees in the twin cities and wind chill close and the chicago area. if you factor in the big chill the drop in temperatures between early this morning and this afternoon made it feel like a drop of almost 35 degrees. the gale warnings

thinks the next system, the cold front, the alberta clipper, not a lot of oomph with it.ight, a cloud deck in here tonight and behind the cooler air. i don't think there is too much way in the way of precipitation around here. should be a desent afternoon. a nice little front. should -- here is a look at the surface map. high pressure builds into the weekend. so it will be a cool saturday, cool sunday but a lot of sunshine, should not be too bad for you for december. we are in december now. lots of sunshine, a little warmer than yesterday, about 5 degrees warmer at about five to ten miles per hour. chilly to. 36 the overnight low. cloud cove will hold the temperatures up just a little bit. here is the weekend forecast. you have a football game you are going to, army, navy, lots of sunshine expected both days. a little bit of warmup. notice, we're going to be dry next five days. all right. that will do it with weather. allison, i have a question for you. >> all right, tucker, thank you. >> time to answer ask allison question. >> one viewer writes in, i was watching my frie

there's your alberta clipper, white front that's moving across the great lakes and that's about it. take that after what we've endured the past two weeks. temperatures, it's december. so right around where we should be this time of year, maybe a little chillier than average in chicago. 29 degrees. 16. bring the scarf and the hat, wool hat, if you're traveling to minneapolis. it is winter after all. back to you. >> that's true. there's a lot of options out there because, you know, it's christmas shopping season. there are a lot of options for hat, scarves and gloves out there. >> that's right. you know. i'm sure you look cute -- >> i might buy some. >> get you some. >>> deliberate air strike. that's what two pakistani lawmakers are calling the nato attack that killed 24 of their troops last month. they say no other explanation makes any sense, but the united states still insists it was an accident. so let's bring in zain verjee live in london. any way to definitively determine who's right? >> no, not really. it's pakistan's word against the u.s. now what's happened is, is that this i

crossing into an alberta clipper out of alberta, canada. not a lot of moisture.s over the warm waters of the great lakes, this is where the lake-effect snow season has been slow to start, but is now coming. 6 to inches of snow expected in spots south of buffalo and across the tughill plateau north of watertown. 8 to 12 of snow. the storm that rolled through the northeast yesterday, a lot of rain across areas like d.c. and new york, records shat frerd hartford through philly, louisville and d.c., for rain totals for the year, and the more rain yesterday. a dry day today. traveling to chicago, cleveland or detroit, you'll see the wind and snow. traveling to hawaii, the big island is what you might see this happening. this is the royal -- just outside the royal gardens subdivision, which sounds really nice, and, whew, you get a little too close to that and you're going to burn your toenail there's. amazing video coming out of big island as the multan lava pours down into the pacific ocean. shows that last hour. probably show it again next hour. i never get tired of

we start with a clipper that comes out of -- an alberta clipper out of the midwest.ally be a snowmaker. but this year, it's a rainmaker. look at the numbers, from boston, all the way, well, to washington, d.c. nice and mild. a quick look at the big board so you know what's going on. by the way, want to show you we decorated our maps for new year's with a little burst >> if you're in new york city, you might as well get here. we're getting the party started. josh, you're back there. you're back inside there. >> way back in here, sam. we'll see you in just a bit. >>> now, just in time for new year's eve, there's a new push to make the roads safer and reduce one of the most deadly kind of accidents. those that happen when drivers run red lights. you're seeing footage here of drivers doing just that. as abc's lisa stark reports, one company now says their video could save lives. >> reporter: it is not a pretty picture. and that's the point. the nation's largest supplier of red light cameras, now posting video online, of cars caught by the cameras as they blow through red

this is a moisture-starved alberta clipper coming on by. it's not going to have a big impact. there's the clear skies out to our east. there's the cloud cover across central virginia. that will be burning away as we go through the day. sunshine is coming back, although it will be a fairly cold afternoon to be outside. another cold night with most everybody well below freezing. tomorrow, the sunshine comes back out. milder tomorrow. that won't last long. chilly and damp weather returns for tuesday night and wednesday. so for today, clouds this morning. sunshine this afternoon. back to work and school on your monday. mostly sunny. a little bit milder tomorrow. breezy at times. tomorrow's highs up close to 50 degrees. the clouds will be back on tuesday with a chance for light showers probably tuesday afternoon. tuesday night, wednesday, the bulk of the moisture gets here. it will be a rainstorm not a snowstorm. and cooler weather heading into christmas weekend of all things. who knew it was coming so fast. stay ahead of the weather on nbcwashington.com/weather. or follow me on tw

a little alberta clipper moving out of chicagoland early this morning could bring a few passing snowflakesvirginia. locations west of the blue ridge out towards i-81 might get just enough snow late tonight to coat the ground. nothing major in and around washington. for today partly sunny, cold and breezy. highs in the low to mid 40s. tomorrow plenty of clouds early on. a few breaks of sunshine late in the day. it's going to stay chilly today and tomorrow. with highs in the low to mid 40s. back near 50 tomorrow and tuesday. some more chances for rain not snow coming in wednesday and friday. back to you. >> thank you, chuck. and we'll have another news and weather update in 25 minutes. before we go back to kwlt today" show, we want to remind you to download our new nbc washington >>> welcome back to "today" on a saturday morning, the 17th day of december, 2011. i'm lester holt. >> and there was dramatic testimony this week by assistant penn state football coach mike mcqueary. he testified on friday that he saw jerry sandusky allegedly molesting a young boy in the shower. where does the case

we have a new clipper system moving in and out of canada appeared they come from alberta and the move quickly and they don't have a lot of moisture. if you're traveling, minneapolis or upper michigan, you may run into some delays because of the light snow. it is called. 13 in denver. 18 in kansas city. 25 in chicago. cold air is moving down to the southeast. into the 40's for the mid atlantic. we will continue to see these temperatures drop down. a busy travel day today. no major problems out of b.w.i. marshall. down to dulles and reagan, they are drying out. snow showers a problem in the upper midwest. 51 at the inner harbor. we will see those temperatures stay steady and then drop down to the evening. 32ight now in oakland. 52 at best for baltimore. that will come through the midday point. then the temperatures will fall. 30's at best for the mountains. 60 degrees in ocean city with mostly cloudy skies. we will have some strong winds across the area. clearing skies tonight. down near the freezing mark. colder conditions into the holiday weekend. dry for the ravens game. that storm w

pipeline that the obama administration permitted back in 2009 that was called the alberto clipper and comes from alberta and heads to the refineries in the midwest. and similar sorts of cross- border pipelines and infrastructure that have been built and put into place. host: let us get the chamber perspective. we have the background and we will share some of the thoughts of those opposed to this. but why do we need this? guest: for a number of reasons. the u.s. will need about 21% more energy in 2025 then it has, according to the eia. here is an opportunity to bring in 500,000 to 700,000 barrels of oil. it is important for our economy, for job security, energy supporting -- industry. and it will displace oil from parts of the world that cannot have our interests in mind when it is important to look to our neighbor to the north who has been a good partner, and a stable economy, and we have an opportunity to utilize this resource. host: an object of question because our audience may not be familiar. what is sand oil? guest: deposits of oil trapped in massive deposits on what might have been an ocean thous

pipeline that the obama administration permitted back in 2009 that was called the alberto clipper and comes from alberta and heads to the refineries in the midwest. and similar sorts of cross- border pipelines and infrastructure that have been built and put into place. host: let us get the chamber perspective. we have the background and we will share some of the thoughts from friends of the earth and others of those opposed to this. why do we need this? guest: for a number of reasons. the u.s. will need about 21% more energy in 2025 than it has, according to the eia. here is an opportunity to bring in 500,000 to 700,000 barrels of oil. it is important for our economy, for job security, energy industry. and it will displace oil from parts of the world that do not have our interests in mind when it is important to look to our neighbor to the north who has been a good partner, and a stable economy, and we have an opportunity to utilize this resource. host: an objective question because our audience may not be familiar. what is sand oil? guest: deposits of oil trapped in massive deposits on what might have