quarter today at tableau tv tb.com more than 35 million people are under a severe weather threat today, cnn meteorologist derek van dam is here, so derek, where are where's this threat yeah the threat ranges across much of the nation's midsection and it's all because of this this dynamic between two competing air masses. >> but when we put into what we've been dealing with into context, this has been an extraordinarily active year in terms of tornadoes eclipsing the year to date, average number for of tornadoes, which should be approaching about 800 instead, we've nearly topped 1,100 tornadoes so far. so i had an opportunity to sit down with a scientists as well as a professional storm chaser to talk to them about an unlikely partnership that could solve the mystery behind what drops the most powerful tornadoes on the planet. take a listen determining the precise weather conditions that spawn monster tornadoes is a topic heavily
unfortunately, today is going to be another threat of tornadoes as well as severe weather and just when we thought we would get a break tomorrow, the latest information from the storm prediction center has increased this area and you see across north-eastern texas and in the southern oklahoma, into a slight risks so earlier this morning, it was just a marginal and that would have been if we would have maintained that the first time in over a month where we have not had a slight risk or greater in our severe weather threat toolbox for the day. well, unfortunately, it's this collision of air masses that setting up the ingredients across nations midsection, particularly across the architects region into the southern plains. that's where we'll see a fire thunderstorms through the day today. this is our greatest probability of hail. that's roughly a golf ball falling out of the sky two inch in diameter size hail for portions of nebraska and kansas and then the potential therefore wins and access of 74 miles per hour. that's equivalent to a category one hurricane. really stretching from coast to coast, the border
>> charlie, thank you. let's check in with cbs news meteorologist vanessa murdock for more on the weather threat. good evening to you. >> good evening, weijia. it is a very busy period across the continental u.s. we are watching a massive storm system make its exit. it flooded coastal communities today. behind it, arctic air barrels in, bringing windchill warnings as far south as texas and windchills as cold as 70 below on the northern tier. we will be breaking record cold records through much of the midsection. and then, moving forward, we have got another cross-country storm system. it really begins to ramp up in the tennessee valley tomorrow, bringing snow, and then travels up the east coast tuesday, bringing snow to major cities like new york and boston, and may finally break the storm record here, which is approaching 700 days straight. an inch or more would wrap that record for us. >> vanessa murdock, thanks. this is the last weekend of
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meteorologist rob marciano to time all of this out. hey, rob. >> hi, david. this is winding up. the rain's going to turn back to snow in chicago. blizzard conditions in some areas will continue. what this storm is pulling in its wake is nothing short of jarring. the wind alerts, windchill alerts. that's a huge part of the country. every state but arizona has something going on. the low is going to push across chicago, the back side brings in cold air. heavy rain is going to push up across the northeast with coastal flooding, wind as well. not quite as bad as earlier in the week but certainly the potential for seeing some flooding. then the low continues to amplify as it crosses the great lakes and the wind's going to stream off the great lakes tomorrow. 1 to 3 feet of lake-effect snow through the day tomorrow, through tomorrow night, and does include parts of the buffalo game as well. look at these windchills across the midsection of the country. 20, 30, 40 degrees below zero. those windchills will give you frost bite to exposed skin in 10 minutes. david?
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north carolina, one person was killed at this mobile home park, one of at least four fatalities in the storm zone. the massive system bringing blizzards to the nation's midsection. relentless wind creating whiteout conditions and huge drifts. and in iowa, the heavy snow forcing republican candidates canvassing the state to cancel events. just six days before the iowa caucuses. and now, the i-95 corridor racing to prepare. >> this will be an emergency, it will be serious. and we're urging all new yorkers to exercise extreme caution at this time. >> reporter: david, it's really starting to come down here in connecticut. the winds are gusting, as well. but the heaviest rain and highest winds are yet to come. we could see winds to 60 miles per hour. anybody that lives in the northeast needs to be ready for the potential of their power going out tonight. david? >> david: rob marciano leading us off. rob, thank you. let's get right to ginger zee, she's going to time this out for us right into the overnight hours. hey, ginger. >> reporter: david, hey. these winds are ripping off the
The storm has the potential to bring 8 to 12 inches (20 to 30 centimeters) of snow to a broad area stretching from southeastern Colorado and western Kansas, through eastern Nebraska, large parts of Iowa, northern Missouri and northwestern Illinois, up toward the upper peninsula of Michigan, said Bob Oravec, a forecaster with the National Weather Service in College Park, Maryland.
and the northeast. some of the regions haven't seen any significant snow for almost two years. derek van dam has been tracking it all for us. and i'm personally invested in this forecast. what have we got for the weekend? >> you are not the only one. okay. so here it is. kind of a broad stroke look at the weather forecast that we have for this weekend. this is going to be a central interior of new england snow thump. it will bring the potential for 6 to 12 inches of snow, boston towards worcester and hudson valley. and then you can see it stretches across higher elevations of pennsylvania. but the devil is always in the detail with these nor'easters. what will happen as the storm reaches the coast? here is the storm developing across the nation's midsection. kind of a broad look at how the evolution of the storm will take place through is under. remember this is a saturday night into sunday morning time frame. so timing it out for you at home, the nation's capital, you will get your first bout of