Josh rubenstein is a meteorologist at kcbs in los angeles. Were looking at about an inch to two inches of rain in the l. A. Basin, and right on its heels, heres that third system thats moving in on wednesday. The rain from that could linger all the way into friday. Reporter el nino is an intense warming of the Pacific Ocean near the equator that changes weather patterns around the world. This is one of the largest on record. In glendora, california, eric erby was stocking up on sandbags. It could happen any time anywhere. It depends on how much. Either way, ill make sure im prepared. Reporter los angeles is designed to prevent flooding, which is why the Los Angeles River is encased in all of this concrete. It may look like a pathetic little stream tonight, but, scott, later this week you could have ten to 20 feet of water filling this channel. Ben tracy, thanks. Well, it was a wave of worry that swept world Financial Markets today after stocks in china plunged. The dow was down as much as 467 points, but it recovered, ending with a loss of 276 or 1. 6 . It is the worst start to a year since the great recession. The markets were also rattled by saudi arabia and iran. The two are rivals because the saudis represent the sunni branch of islam and iran is home to the shiite branch. Over the weekend, the saudis executed a shiite cleric. After a furious iranian reaction, countries in the gulf are choosing sides. Heres holly williams. Reporter in iran today, angry protesters denounced saudi arabias execution of the shiite muslim cleric nimr alnimr. His death has opened a 1,400 yearold wound, enflaming tensions between sunni and shiite muslims. In the sunniled kingdom of saudi arabia, alnimr dared to demand equality for shiites and was shot and then arrested in 2012. It was in shiitedominated iran that Saudi Arabias Embassy was ransacked and burned on saturday. Around 40 people were later arrested, but iran made its feelings clear by renaming this street in honor of the executed cleric. Saudi arabia and iran are already fighting two deadly proxy wars against each other in syria and yemen, taking sides along religious lines. Now there are fears that al nimrs execution will fuel even more violence in the middle east. Shiite muslims also clashed with police in bahrain. They used tear gas and rubber bullets against the protesters. Blaming iran for the escalation, saudi arabia has severed diplomatic ties with tehran. Its ally, bahrain, has followed suit, while the United Arab Emirates has recalled its ambassador. With many countries in the middle east already torn apart by religious differences, these tensions could destabilize the region even more, especially, scott, if saudi arabia and iran try to use those religious divisions to further their own interests. Holly williams reporting for us tonight in istanbul. Holly, thank you. Is man creating earthquakes in oklahoma . And theyve discovered the wreck of el faro, the worst u. S. And theyve discovered the wreck of el faro, the worst u. S. Maritime disaster in 30 years. Oh no. under his breath hey man hey peter. unenthusiastic oh. Ha ha ha joanne . Is that you . Its me. You dont look a day over 70. Am i right . Jingle jingle. If youre peter pan, you stay young forever. Its what you do. If you want to save fifteen percent or more on car insurance, you switch to geico. You make me feel so young. Its what you do. You make me feel so spring has sprung. Dayquil liquid gels and go. Hey buddy, lets get these but these liquid gels are new. Mucinex fast max. Its the same difference. These are multisymptom. Well so are these. This one is max strength and fights mucus. That one doesnt. Uh. Think fast you dropped something. Oh. Ill put it back on the shelf. New from mucinex fast max. The only cold and flu liquid gel thats maxstrength and fights mucus. Start the relief. Ditch the misery. Lets end this. After a swarm of small earthquakes in oklahoma, the state has ordered oil drillers today to reduce the amount of wastewater they inject into the ground during a process known as fracking. Heres mark strassmann. Reporter oklahoma, not california, is now americas earthquake capital. Who do you call if you feel an earthquake . Reporter until 2008, the state averaged one or two a year. Now its almost three a day. It was a big boom. And everything started shaking. Reporter including you . Including me. Reporter a 4. 5 magnitude earthquake hit crescent, oklahoma, last july. Grocery clerk Lois Gillette hugged a coworker. I thought i was going to fall. There was a lot of stuff fell off the shelves. Reporter oklahoma keeps breaking records for earthquakes with a magnitude of 3. 0 or higher. More than 900 last year alone. But why . Most geologists connect the spike in earthquakes to the states oil and gas industry and its disposal of massive amounts of water into underground caverns. Geologist todd halihan teaches at oklahoma state. Unfortunately there is a side effect and now we are generating seismicity due to the injection wells, theyre startling when you feel them, and there are now a lot of people experiencing them on a pretty broad scale. Reporter Lois Gillette isnt taking sides. I dont know if its manmade. I dont have any idea. Reporter you would just like it to stop . I want it to stop. Please. Reporter one geologist we talked to said no question something has reactivated fault lines here, fault lines that had been dormant for 300 million years. Mark strassmann, thanks. And well be right back. Today the National Transportation safety board said that it may press for more evidence in the sinking of the american cargo ship el faro, lost this past october in hurricane joaquin. All 33 crew were killed. Recently on assignment with 60 minutes, we sailed with the ntsbs investigator, tom rothroffy as el faro was discovered 15,000 feet under the atlantic. This is where el faro came to rest, upright, hull largely intact, her name mangled on the stern. Her depth markings reported that this, the bow, had sunk 15 feet into the mud. Her autopsy revealed a body that had been savagely beaten, steel crushed, equipment collapsed. There was no sign of the 33 crew members. Equipment and cargo litter the seabed. Thats a microwave oven, and on the right, thats a printer. Here is the top of a car with a sunroof, part of the cargo. At the top of that white line there is the most surprising part of our video surveys. Theres nothing above there. What should be there . There should be two decks above that. The lower navigation bridge deck and the bridge deck. The two top decks had sheered off, including the bridge, where captain davidson would have been fighting the storm. They were nowhere near the ship. Also missing, the voyage data recorder, like a socalled black box on an airplane. The safety board says it may search again for that data recorder, which would have captured conversations on the bridge. Our final story coming up next. [music] i love my sister. My heart doesnt see race. Love is love. The government says we need 75 minutes of vigorous exercise a week. Dr. Jon lapook has one way to get it. Reporter this is considered vigorous . Right. Reporter dr. Carol ewing garber teaches the science of exercise at columbias teachers college. How many calories a minute do you burn procrastinating . Because im really good at that. I dont think you burn too many at all. Reporter for those who get tired just thinking about strenuous exercise without rest, theres a fitness approach called high intensity interval training or h. I. T. Short bursts of high intensity exertion, say a minute or two of running as fast as you can, followed by a slow period of recovery, maybe a slow jog for a few minutes. So ill row for 100 meters. So thats a short row. It will be high intensity. Im going to try to bring the power up. Reporter h. I. T. Is the mantra at orange theory fitness where eddie diaz is a coach. This will be a Recovery Period here. Get those nice deep breaths in, and after youre done with your ten seconds, you get back the work. Reporter the h. I. T. Regimen varies from place the place. Here the goal is to work out in what they call the orange zone, at a high intensity level for 12 to 20 minutes of an hourlong class. I felt completely out of shape. Reporter 36yearold shelly ramsammy has asthma and used to be afraid of vigorous exertion. She tolerated the interval training well and last summer she had added incentive. I was trying to get fit for a trip. Im going to be in a bikini. I have to get fit. Reporter after building up slowly, exercise experts recommend, she now runs twice as fast as before. Research shows highintensity training stimulates the muscles to burn fat and sugar more effectively. Why is it hot now . I think because research has been showing that it can be pretty powerful in improving peoples risk factors for Heart Disease and diabetes. Reporter powerful, too, in getting some people off the couch. Because at the end of the day, exercise works best if you actually do it. Dr. Jon lapook, cbs news, new york. Thats the overnight news for this tuesday. For some of you, the news will continue. For others, check back with us a little bit later for the morning news and cbs this morning. From the Broadcast Center in new york city, im scott pelley. Captions by vitac www. Vitac. Com this is the cbs overnight news. Welcome to the overnight news. Im elaine quijano. President obama fired the opening shot in the latest battle over gun control. He met with attorney general Loretta Lynch and fbi director james comey to come up with a strategy to reign in gun violence. The president plans a series of executive actions to make it more difficult for some people to purchase weapons. And hell do it without going through congress. We have tens of thousands of people every single year who are killed by guns. We have suicides that are committed by firearms at a rate that far exceeds other countries. We have a frequency of Mass Shootings that far exceeds other countries in frequency. And although it is my strong belief that for us to get our complete arms around the problem, Congress Needs to act. What i asked my team to do is see what more we could do to strengthen our enforcement and prevent guns from falling into the wrong hands, to make sure that criminals and people who are mentally unstable, those who could pose a danger to themselves or others are less likely to get a gun. And i have just received back a report from attorney general lynch, director comey, as well as Deputy Director brandon, about some of the ideas and initiatives they think could make a difference. And the good news is, these are not only recommendations that are well within my legal authority, and the executive branch, but theyre also ones that the overwhelming majority of the american people, including gun owners, support and believe. So over the next several days, well be rolling out these initiatives. Well be making sure that people have a very clear understanding of what can make a difference and what we can do. And although we have to be very clear this is not going to solve every Violent Crime in this country, its not going to prevent every mass shooting, its not going to keep every gun out of the hands of criminals, it will potentially save lives in this country. And spare families the pain and the extraordinary loss that theyve suffered as a consequence of a firearm being in the hands of the wrong people. Im also confident that the recommendations that are being made by my team here are ones that are entirely consistent with the second amendment, and peoples lawful right to bear arms. Reporter already it has a lot of people on capitol hill fired up. Jan crawford reports. Reporter the president is going to be holding a series of events, then hes going to sign those executive actions he hopes will help curb some of this gun violence. But before we know the details, opponents are sharpening their attacks. My new years resolution is to move forward on our unfinished business. Reporter president obama teased this latest round of executive actions over the weekend. We know we cant stop every act of violence. But what if we tried to stop even one . Reporter he signalled a november last month in an interview with norah odonnell, after 14 people were killed in San Bernardino by terrorists using legally purchased firearms. Theres some steps we could take not to eliminate every one of these Mass Shootings, but to improve the odds that they dont happen as frequently. Reporter nearly three years after the president side stepped congress with 23 executive actions on gun control, advocates are urging him to do more. The white house is now considering several steps to clarify existing laws, forcing more gun sellers to conduct background checks on potential buyers, and makes it more difficult for convicted domestic abusers to acquire firearms. Democratic candidates for president were quick to praise the president s upcoming action. Most gun owners in this country understand that people who should not own guns should not be able to buy them. What if its republican that walks into the white house . Within the first day, the executive orders will be reversed. Reporter the republicans immediately objected. On my first day behind that desk, those orders are gone. The new president comes in, boom, first hour, first minute, you can rescind that. Reporter and they attacked the president for going around congress. This topdown driven approach doesnt create freedom or safety, it doesnt create security. Reporter now with all these legal questions swirling around whether the president even has the authority to do this, to do an endrun around congress, one thing is almost certain, this all is probably going to end up in court. In the wilds of oregon, a group of selfstyled militiamen continue to occupy several buildings in a federal wildlife refuge. The group calls itself citizens for constitutional freedom. Members are apparently armed and are protesting the way the government runs federal lands. Theres no visible Law Enforcement presence in the area, and the fbi insists its seeking a peaceful resolution. John blackstone reports. Reporter while the American Flag is draped over the sign here, thats the protesters signal that they are in charge here, theyre calling on supporters from across the country to come and join them here. They say theyll stay here as long as it takes, until their demands are met. At the occupied compound, protesters are setting up camp and settling in for the long haul. Ammon bundy is leading the occupation. He says theyre fighting back against the governments expansion of the over 100yearold federal wildlife refuge at the expense of local ranchers. This refuge here is rightfully owned by the people, and we intend to use it. Reporter back in 2014, bundys father, cliven, was embroiled in a dispute with federal officials over grazing rights on federal land. That escalated into an armed confrontation. This group says up camp saturday after a march in a nearby town in support of two ranchers. Dwight hammond and his son steven were convicted of setting fires on federal land in 2001 and served jail time. They say it wasnt arson, but controlled burns to protect their property. In october, a judge added four more years to their sentence. 73yearold hammond says this could be a death sentence for him. This makes it over for me. It just seems like a little overreach for having burned 127 acres. Reporter in a statement, the hammonds attorney reports theyre not associated with bundys group, saying reporter but protesters say they plan to stay put until all local ranchers reclaim land they allege was stolen by the u. S. Government years ago. Well be here as long as it takes, and being as gentle as possible. But this is important. Reporter here outside the compound, armed guards are standing by to monitor those entering the property. Meanwhile, dwight and steven seriously . Where do you think youre going . To work, with you. Its taco tuesday. Youre not coming. I took mucinex to help get rid of my mucusy congestion. Oh, right then ill swing by in like 4 hours. Forget the tacos one pill lasts 12 hours. Im good all day. Wait your loss. I was going to wear a sombrero. Only mucinex has a bilayer tablet that starts fast, and keeps working. Not 4, not 6, but 12 full hours. Start the relief. Ditch the misery. Lets end this. Forget the saggy diaper cowboy walk dance freely in new pampers cruisers with three extra absorb channels. It doesnt sag and stays dryer so dance, however you want in new pampers cruisers the ntsb has released underwater video of whats left of the cargo ship el faro. It took on water and sank in a hurricane last october. The el faro sits in water deeper than the titanic in the heart of the bermuda triangle. All 33 crew members were lost at sea. The worst american shipping disaster in 35 years. The exact cause of the wreck remains a mystery. Scott pelley has the story for 60 minutes. Reporter september 29th, el faro left jacksonville, florida. Captain michael davidson, who had a long career, intended to steer 65 miles south of the storms predicted path. Even in a hurricane, the ship could likely survive by using its turbine engine to keep the bow pointed directly into the waves. A ships most survivable angle. But in 18 hours, joaquin spun into a category 3 and slid southwest toward el faro. David made an emergency call to the ships owner, tote maritime. What do we know from the captains last report . We know that he had lost propulsion, that the engineers were unable to restart the main engine. The vessel was listing about 15 degrees and one of the hatches had popped or come open. Reporter he was taking on watter . Correct. Reporter if the ship lost power as the captain reported, you would expect her to turn sideway to the waves, and that is her most vulnerable position . Thats correct. Reporter the ship was approximately here, miles from the eye of the storm. The forecast predicted gusts of 150 miles an hour, and seas of 30 feet. Three weeks later, apache arrived in a search area of 198 scale miles. Charles kapeka towed a side scan sonar for five days, when he spotted something you dont see in nature, a right angle. Its very straight with a shadow. At this point im calling over saying i think theres something coming up you want to seechlt reporter as the sonar scan unfurled, the sound waves reflected the shape of a shift, about 800 feet long. At that point, we talked to the ntsb and said we believe we have found it. We then put our curve in the water and did a survey of the hull with moving and still photography. Reporter the cable controlled underwater recovery vehicle can reach 20,000 feet. And these are the cameras . Correct. So heres a