Chris, HB9DFG Posted July 24, 2022 Share Posted July 24, 2022 Hi everybody In present LASCO movies a beautiful full halo CME is visible with a later sidesweep pigtail from another part of the sun (my guess). Here is my 2-image subtraction from 2022-07-23, 20:18UTC and 21:18UTC: Spacewather.com (the always optimistc site) sees a connection from a departing southern filament. Hmmm, really? When I check the seimic backside monitor: farside which is crowded with interesting regions right now, I personally don't believe in such a frontside event. What is your opinion? Regards, Chris Link to comment Share on other sites More sharing options...
Jen Seits Posted July 24, 2022 Share Posted July 24, 2022 (edited) No, it was on the Front. https://www.sidc.be/cactus/out/latestCMEs.html https://www.sidc.be/cactus/out/CME0024/CME.html https://www.swpc.noaa.gov/products/lasco-coronagraph# Edited July 24, 2022 by Jen Seits CME was renamed. Link to comment Share on other sites More sharing options...
Newbie Posted July 24, 2022 Share Posted July 24, 2022 Hi Chris, this from SWPC :Product: Forecast Discussion :Issued: 2022 Jul 24 0030 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # Solar Activity .24 hr Summary... Other activity included an approximate 10 degree filament eruption centered near S13W33 that began at 23/1840 UTC. An associated CME was observed off the SW limb at 23/1912 UTC in SOHO/LASCO C2 imagery. At the same time there was a backsided full halo CME in coronagraph imagery. Analysis is ongoing at this time It appears two events occurred at the same time, Regards, Newbie 2 1 Link to comment Share on other sites More sharing options...
MinYoongi Posted July 24, 2022 Share Posted July 24, 2022 On twitter i read : "The Sun today! A filament erupted creating a bright CME with a lot of structure on late July 23. Seen with combination SOHO/LASCO C2 coronagraph image & SDO 304-angstrom EUV image CME may be Earth-directed. We await further analysis. 🌞🤩🤔" I dont get how this could be earth directed in any way? If it was a frontside event it wasnt from center disc right? Maybe a glancing blow? Link to comment Share on other sites More sharing options...
Newbie Posted July 24, 2022 Share Posted July 24, 2022 (edited) 10 hours ago, MinYoongi said: On twitter i read : "The Sun today! A filament erupted creating a bright CME with a lot of structure on late July 23. Seen with combination SOHO/LASCO C2 coronagraph image & SDO 304-angstrom EUV image CME may be Earth-directed. We await further analysis. 🌞🤩🤔" I dont get how this could be earth directed in any way? If it was a frontside event it wasnt from center disc right? Maybe a glancing blow? People who post are ever hopeful something will be Earth directed aren't they? The filament was centered around S13W33, so not centre disc, a glancing blow perhaps, the associated CME was observed off SW limb. We wait for the data to come in. N. Edited July 24, 2022 by Newbie Link to comment Share on other sites More sharing options...
Solution Sam Warfel Posted July 24, 2022 Solution Share Posted July 24, 2022 The full halo was farside, the SW limb CME was from a prominence near the limb. Neither will impact earth. 2 Link to comment Share on other sites More sharing options...
Newbie Posted July 24, 2022 Share Posted July 24, 2022 (edited) Hello Jen Seits, Firstly welcome to SWL. I notice you edited your original post because you believed the CME had been renamed! Is that correct? The first CME was #25. Infact, another CME was produced close to the same time which was numbered #26. It was this CME that produced a Type IV halo CME. I have checked a number of sites and all agree that #26 was a far sided event and not the Earth facing filament eruption. In addition there have been no reports of Earth side radio bursts since. It can be confusing when almost simultaneous events occur. Latest data suggest no Earth impact from the filament eruption. Regards, Newbie Edited July 24, 2022 by Newbie Link to comment Share on other sites More sharing options...
Sam Warfel Posted July 25, 2022 Share Posted July 25, 2022 @Jen Seits Remain respectful. Link to comment Share on other sites More sharing options...
Yak Posted July 25, 2022 Share Posted July 25, 2022 how powerful is the CME, and could this mean that we could have some interesting spots on the sun in a week or so? Link to comment Share on other sites More sharing options...
Sam Warfel Posted July 25, 2022 Share Posted July 25, 2022 6 minutes ago, Yak said: how powerful is the CME, and could this mean that we could have some interesting spots on the sun in a week or so? It was a pretty strong one, I’m hoping the spots that launched it survive to reach the Earthside! They may, or they may just as likely decay before they get here Link to comment Share on other sites More sharing options...
Newbie Posted July 25, 2022 Share Posted July 25, 2022 5 minutes ago, Yak said: how powerful is the CME, and could this mean that we could have some interesting spots on the sun in a week or There might be something of interest if the activity continues. N. Link to comment Share on other sites More sharing options...
MinYoongi Posted July 25, 2022 Share Posted July 25, 2022 6 hours ago, Orneno said: It was a pretty strong one, I’m hoping the spots that launched it survive to reach the Earthside! They may, or they may just as likely decay before they get here Yep! But the thing is, it couldve been a filament too. We cant know since its backsided. Link to comment Share on other sites More sharing options...
Chris, HB9DFG Posted July 25, 2022 Author Share Posted July 25, 2022 I think it's slowly time for an activity improvement of the sun the next weeks and months to OUR direction. I was not on the forum the last weeks and enjoyed a little more amateur radio during the sporadic-E season where you can contact stations on VHF up to 3000km and more from your location randomly. All those near misses of a lot of CMEs and weak M1 flares in the past have become very disappointing and boring meanwhile. So let's all our fingers and toes crossed for an improvement the next weeks and months! ✌️🤞 Regards, Chris 1 Link to comment Share on other sites More sharing options...
Sam Warfel Posted July 25, 2022 Share Posted July 25, 2022 You can cross your toes? Impressive. 1 Link to comment Share on other sites More sharing options...
Chris, HB9DFG Posted July 25, 2022 Author Share Posted July 25, 2022 ...of course, Orneno - putting one feet over the other one! 😁 Regards, Chris 2 Link to comment Share on other sites More sharing options...
Sam Warfel Posted July 25, 2022 Share Posted July 25, 2022 1 hour ago, Chris, HB9DFG said: ...of course, Orneno - putting one feet over the other one! 😁 Regards, Chris Ya got me there 🤣 Link to comment Share on other sites More sharing options...
MinYoongi Posted July 25, 2022 Share Posted July 25, 2022 I dont know if you're all interested but the big farside CME likely was a big Filament that was spotted a few days ago that is now gone since the big CME. Link to comment Share on other sites More sharing options...
Yak Posted July 25, 2022 Share Posted July 25, 2022 Sorry im new, what is a filiment. Link to comment Share on other sites More sharing options...
Sam Warfel Posted July 25, 2022 Share Posted July 25, 2022 (edited) 2 hours ago, MinYoongi said: I dont know if you're all interested but the big farside CME likely was a big Filament that was spotted a few days ago that is now gone since the big CME. How can you tell? 23 minutes ago, Yak said: Sorry im new, what is a filiment. A long string of plasma like a rope going out of and back into the sun, they are unstable and prone collapsing, which can cause CMEs. https://www.spaceweatherlive.com/en/help/what-is-a-filament.html Edited July 25, 2022 by Orneno Added SWL help page link Link to comment Share on other sites More sharing options...
MinYoongi Posted July 25, 2022 Share Posted July 25, 2022 Just now, Orneno said: How can you tell? Link to comment Share on other sites More sharing options...
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