Page 38 - Back Half News Today

Like a hot air balloon. when the sun comes out, heats the ground, the ground warms up and the air wants to rise. as the air rises into space, it goes up higher and higher and gets into colder and colder air so the particles congeal, the humidity comes in and goes straight up into the air and you see the towering cumulus clouds, like everything in the northern hemisphere that spins to the right and everything in the southern hemisphere that spin to the left. if you move this stuff long enough on ...

Hemisphere that spins to the right and everything in the southern hemisphere that spins to the left. if you move this stuff long enough on the way up, literally, 60,000 feet in the sky, 12 miles from the surface to the top, you will get this spin. eventually, the whole storm spins and then the back half we call it the mesocyclone, the conservation of angular momentum, like an ice skater bringing her arms in. she skates and skates faster. the more -- the closer her arms are in and at the bottom o...

That makes a jet stream thats faster than normal. when you get a jet stream moving faster, you get the potential for more sheer. more difference between what the air is doing down here and what the air is doing up here. a faster jet can make and does make bigger tornadoes i. >> i mean, how does a tornado form? >> this is cool stuff. particles on the ground, humidity on the ground starts to rise. like a hot air balloon. when the sun comes out, heats the ground, the ground warms up and the air wan...

that is a monster tornado. >> reporter: battle hardened storm chasers in awe of natures power. >> oh, my gosh. this is awful. dude, the trees. the trees are debarked! >> reporter: residents running for cover anywhere they could. >> in a crowded convenience store some 20 people hunkering down in a darkened commercial refrigerator. >> can we go in the cooler? [ screaming ] >> go! >> oh, dear heaven. >> god! >> reporter: at the same time a security camera in a nearby frozen yogurt shop ca...

>> reporter: battle hardened storm chasers in awe of natures power. >> oh, my gosh. this is awful. dude, the trees. the trees are debarked! >> reporter: residents running for cover anywhere they could. >> in a crowded convenience store some 20 people hunkering down in a darkened commercial refrigerator. >> can we go in the cooler? [ screaming ] >> go! >> oh, dear heaven. >> god! >> reporter: at the same time a security camera in a nearby frozen yogurt shop catches the chaos. workers mo...

Like a hot-air baa log. the sun comes out to warm the ground and the air wants to rise. as the air rises into space it goes up higher and higher and gets into colder and colder air. so all the particles start to congeal down here. all the humidity comes in and then it goes straight up in the air. you can see the towering cumulus clouds, a lot like everything in the northern hemisphere that spins to the right and everything in the southern hemisphere that spins to the left. eventually if you move...

whats happening. thats ahead. we will have the latest on this developing story in a few minutes from now. president obama is back at the white house of a spending several hours in joplin, missouri. it was exactly a week ago that an f-5 tornado ripped through the city killing people in minutes. 5:41 central time there was a moment of silence marked by the precise instant that tornado hit. our dan traveled with the president to joplin and dan, a tough job for the president to try to li...

rooftops. people were marched to demand the release of political prisoners and the bullets rained down. and sarah palin thundering into d.c. today, but is she ready to roll into the presidential race? the best political team on television is weighing in. im drew griffin. the news starts now. in the headlines tonight president obama went to joplin, missouri, today. it was his first chance to see the unimaginable damage caused by last sundays ef-5 tornado. he spoke at a memorial servic...

On bin ladens compound was the existence of this secret stealth black hawk that no one new xaisexais existed. unlike normal black hawks its not painted olive green but infrared suppression gray and some of the lines are more reminiscent of an f-22. radar waves cant bounce back. finally theres sort of a hub cap on the back of its tail rotor that would help suppress its sound. what happens was when the seal pz were coming coming into the compound it hit, landed on part of the wall. part of it fell...

Extended tarmacs like that one that was experienced on the jfk tarmac. there is a four-hour limit. >> this is ground breaking and even to be noticed by the government is amazing, but the fact that they are passing meaningful regulations to make a big difference for airline passengers is just a miracle. >> okay. jeanne meserve, everyone watching the piece wants to know when the rules go into effect? >> well, not immediately, alas. it will take a little bit of time. the final rule was published to...