in this particular instance, we saw that the alert went out instead of at 10:19 pacific time, 10:19 utc time. there's a seven-hour difference between there. so you can do the math. instead of the later time, it came out at 3:19 in the morning, very early. >> so some people actually, doctor, got an alert yesterday. but then they didn't get one this morning. what happened there? why is that? >> well, anyone who got the alert with myshake should have received the test alert today. some people may have received an alert through wea yesterday. yesterday was a different ball game. yesterday there was in fact a real earthquake. there was a magnitude 4.2 earthquake out in alton. for that particular event, the shake alert system, which shake alert is the part of the system that detects the earthquake and estimates the magnitude. shake alert overestimated the magnitude for that event, and because of that, it did send out an alert. what may have happened is if someone received the alert either via the android alerting system on their phone or the wea alerts, if they don't have the myshake app, the

utc, not pacific time. >> reporter: robert says the glitch has been fixed, and adds that some people still may not have got the correct test alert. >> it is possible some people may not get the alert right at 10:19, it may be a bit earlier or later. but i think you might be asking if some people did not get it at all. that is a very important thing to resolve. there are a number of factors that could be because of that. it could be that perhaps it was not installed correctly, or the cell phone reception was not as good as it was supposed to be. >> reporter: you further explain why the original magnitude reported was higher and then later downgraded. >> it was estimated magnitude 5.7 because the first seismic stations that picked up the earthquake were very close to the epicenter. that gave the impression the quake was bigger than it really was. after sometime, the magnitude was lowered to 4.2. >> reporter: it is important to remember, you will only get the test alert if you have the myshake app downloaded. for now, when it comes to the app,

of irgc aerospace force, said: this divorce took place on october 25 at 5 am tehran time and 1:30 am utc over the indian ocean. in this event , satellites are evaluated relative to each other's positions . irans.com internet website, which was recently launched by a group of iranian space science and astronomy activists, shows the position of iranian satellites at any moment. those interested can visit this website for more information. using artificial intelligence, scientists were able to discover the first supernova. this new system, which was developed with international cooperation led by northern university , automatically searches for new supernovae in the night sky, according to reuters. in addition to increasing the speed of analysis and classification, the system also reduces the ansari error. in this method, a set of robots and artificial intelligence structures communicate with telesk to finally confirm the discovery of a supernova. this finding helps scientists to better understand the life cycle of stars and the origin of elements such as carbon, iron and uranium that creat

utc and not pacific time. >> i hate when that happens. my shake reported a higher than accurate magnitude because of soft soil around the detector. the survey hopes people will stick with the app as they work out the kinks. >>> in tonight's project earth. a oyster can do more than turn a grain of sand into a pearl. a california native may play a role in curving the impacts of climate change. elizabeth cook reports on an olympian quest. >> reporter: at swan oyster depot in san francisco the line forms early. if you are lucky to get a seat you are in for a treat. >> we just had the olympia oysters, they were phenomenal, phenomenal. >> as small as a silver dollar but big in flavor. they are the only oyster native to the west coast. >> it is good. i grew up eating oysters. i think they are just fantastic. >> reporter: they are not endangered but their numbers have dramatically declined. largely due to over harvesting during the gold rush as well as pollution and loss of habitat. now, scientists researchers and volunteers are working to restor

aerospace force, said: this divorce took place on the 25th of mehr at 5:00 am tehran time and 1:30 am utc time.

or 1019 utc time, which is kind of a universal time, which is essentially seven hours different fromare here in the pacific. my shake app shared this message, blaming the error on a configuration glitch that they assure will not be repeated for next year's safety drill. while some were woken up at 3 a.m. and others received the alert on time at 1019, we were told by dozens of people that they didn't receive an alert at all. today, i think it has potential, but i didn't get the alert today. >> so i'm like, is it does it really work? >> unlike the real alert that came during the 4.2 quake in sacramento county, robert degroot with usgs told us thursday's test alert required prior download of the myshake app errors during the great shakeout have some questioning the early warning system, but degroot says it's still an important tool in earthquake safety and preparedness to keep your faith in it. >> we're making it better every day. it's there to protect people. our priority is, is public safety. so we just want people to understand that this is all being done in the name of keeping peopl

or 1019 utc time, which is kind of a universal time, which is essentially seven hours different from where we are here in the pacific. >> my shake app shared this message, blaming the error on a configuration glitch that they assure will not be repeated for next year's safety drill. while some were woken up at 3 a.m. and others received the alert on time at 1019, we were told by dozens of people that they didn't receive an alert at all. today, i think it has potential, but i didn't get the alert today. >> so i'm like, is it does it really work? >> unlike the real alert that came during the 4.2 quake in sacramento county, robert degroot with usgs told us thursday's test alert required prior download of the myshake app errors during the great shakeout have some questioning the early warning system. but degroot says it's still an important tool in earthquake safety and preparedness. >> keep your faith in it. we're making it better every day. hey, it's there to protect people. our priority is, is public safety. so we just want people to understand that this is all being done in the name

so this error occurred because the warning was set for 10:19am, utc, which is coordinated universal time's also known as the greenwich mean time. the alert was supposed to go out and or pacific time, but someone they admit messed up. it's not known how many people actually got that early morning message. but overall, the idea was, you know, an earthquake could happen at any time. so got to be ready. one person is dead after being hit by a muni bus in san francisco. it happened on van ness avenue near the tenderloin district. we know that the pedestrian involved killed in this accident and then that's avenue was closed for several hours. this is some video now of the scene. and you can see that the driver side of the wind chill that the muni bus was shattered. there's also police tape blocking off both sides of an. the accident happened around 1 o'clock this morning. and here's a map that's right. near the corner of van ness avenue and o'farrell street just west of the tenderloin area. there. san francisco police have not given any details on the person who died or what may have caused th