5.8 Earthquake Aleutian Trench, Quickly followed up by 4.8 Southern End of the Cascadia Subduction.

Added: 2026-05-10

[00:00:01]All right, what's going on there folks?

[00:00:02]Welcome back here to a Friday night.

[00:00:04]It's just about 10:00 p.m. here California time, May 8th, 2026. Latest activity here shows some interesting movement across Alaska right now. Also some activity following that. Looks like just a few minutes after the 5.8, we got a 4.4 just shy of the Cascadia subduction zone right now.

[00:00:24]That is a legit earthquake as you can see on the size graph station here on Petrolia. I'm thinking that's going to be uh Ooh, what [clears throat] do we got going on here?

[00:00:39]>> [cough] >> Excuse me. [clears throat] I just had some indigestion come up there. Not good.

[00:00:45]Right as I'm doing the update.

[00:00:47]Um that's interesting. That's a legit earthquake here. That follows a 5.8 over here um along the Aleutian Trench about 10 minutes, 15 minutes ago or so. Uh 5.8 looks like they may have had some uh negative effect here on the Cascadia uh where that 4.4 earthquake is coming in right now.

[00:01:09]5 mi deep, it is just shy here of the Cascadia subduction zone out there in the uh in the Pacific. Let's see if they reviewed this earthquake or not. It's underneath automatic status.

[00:01:19]So, this possibly could get reviewed here and updated into a different location.

[00:01:26]Uh the origins here of these magnitudes, of course, no stations there contributed, so that doesn't help us out, but I can see here that that is indeed a legit earthquake.

[00:01:37]Now, what I'm trying to figure out here is this reading right here on Mount St. Helens. Now, let me see here.

[00:01:49]>> [clears throat] >> It's possible maybe this 4.4 is a little bit bigger than that magnitude cuz it's I mean, I guess it could be showing up there on Mount St. Helens, but that's a considerable distance.

[00:02:04]It did show up here on Anza.

[00:02:07]So, we got some movement going on out here across California right now. I didn't feel any shaking out here. It's a ways out there.

[00:02:21]There we go. They just updated it a little bit there to a 4.6.

[00:02:25]Um very close. Closer to the Cascadia subduction zone and more shallow right now. This is at the southern end of the Cascadia subduction zone.

[00:02:36]Um so that's not good.

[00:02:39]And that follows that 5.8 up here that struck at 21:42 about 15 minutes later.

[00:02:46]You get that 4.6. See, I I could tell that it's a little bit larger quake here.

[00:02:53]Uh it definitely flatlined the station, but it's possible that showed that's showing up there on the uh Mount St. Helens station uh with that magnitude. And it still may even get revised here even higher.

[00:03:04]Um but for now a uh 4.6 outside of Crescent City. It's again just shy of the southern end of the Cascadia subduction zone.

[00:03:23]I don't see anything up at Mount St. Helens uh as far as a local earthquake coming in. This hard to tell.

[00:03:29]Um but I the 5.8 that struck in Alaska, I believe is this reading right here. Let me get rid of that. That's the 5.8 over there along the Aleutian Trench, a ways away from Mount St. Helens. So, this activity is the four-pointer, 4.6 in northern California, which also showed up here uh in the uh southern California area.

[00:03:51]That's the 4.6 reading.

[00:03:55]Uh but this could get revised even more, uh possibly even to a little bit higher magnitude. Still underneath automatic status, so I'm thinking maybe it's a little bit closer to a five-pointer.

[00:04:06]Um I did not feel any shaking here.

[00:04:10]Some of the station uh details are coming in right now. We got 172 stations here uh reporting a 4.7 with magnitudes potentially up in the lower five range. There's a mid-five coming in.

[00:04:24]Mid-five, there's almost an upper five.

[00:04:27]I don't know if it's going to go that high or not, but we'll have to watch and see here. Anyone in the uh in the chat room feel this earthquake here? Let's see.

[00:04:37]Felt that earthquake in Eureka. Thanks there, Tyler.

[00:04:43]Didn't feel it. Um a good light jolt, 6.1 downgraded. Wow, what a surprise.

[00:04:51]Yeah, quite a few folks here. Looks like we just jumped up here in the uh the viewers.

[00:04:55]Um let me know if you felt this earthquake here. I'm thinking this may get revised here. I'm just kind of looking at the uh you know, these readings on the uh graph for it to show up like that on Mount St. Helens and down in Southern California, that may be a little bit bigger than the 4.6, but we'll uh we'll check that. Look at that. I'm not liking that one bit right there, right just shy of the Cascadia Subduction Zone.

[00:05:19]I know we I get it. We get earthquake activity out here, but one of these could trigger the um uh the southern end. Let's check out the tremor counts here. See what we got for the uh Cascadia tremor, which are slow slip events. 114 Northern California. That could explain why we're seeing elevated stress back towards the southern end of the Cascadia, right? This is occurring down into the deeper area of the Cascadia Subduction Zone. I'm just going to show this for reference once again. Uh the locked area is in the red. It does sit offshore.

[00:05:54]Uh the earthquake itself, the 4.6 that's coming in sits it's sitting right about here. This is a cross-section of the Cascadia. This goes for Northern California, Oregon, and Washington. This is pretty much going to cover the same cross-section of the Cascadia.

[00:06:10]Um but the tremor counts occur right about here, deeper into the you know, the deeper region here of the Cascadia.

[00:06:17]And that adds further stress upstream across the locked area. We got a pretty good number there of 114 tremors deep underneath Northern California. And that is pretty much due west directly west of where the tremor counts are uh occurring.

[00:06:36]You guys see that? So, here's the tremor counts underneath Northern California.

[00:06:41]And directly due west uh we're getting that strain effect. Uh the build-up of pressure uh where that 4.6 struck here. So, this area we got to watch this region closely here, folks. I've been talking about the Cascadia. And I I I've been saying that I do believe that we're going to probably see a partial rupture here soon, if not a uh a com- a complete rupture.

[00:07:06]So, that's uh you know, rather interesting here. And and the reason why I say I think we'll see a partial rupture is because in between major events, we'll see a uh a um a partial rupture. Let me go back here and see where my This is uh survivingcascadia.com.

[00:07:25]It's um uh For those that are new, or maybe I have they haven't heard me say this. Um the last 10,000 years of Cascadia earthquakes here are on this graph.

[00:07:38]And 9,000 years ago, 8,000 years ago, 7,000 years ago, it took longer for the stress to build on the Cascadia. In fact, some of those events were up in the 5, 600 year range. It's only until recently here in the last 4,000 years where the intervals are getting shorter and shorter in between major events. So, here we are in the last 4,000 years and we've gone 100% longer than known times between earthquakes in the last 4,000 years, Cascadia ruptures, until now, right? We're We've gone longer than any known event.

[00:08:14]The last one was 291 years until now, so um we are getting close, I believe. I firmly believe we're getting close to a big earthquake out here along the Cascadia.

[00:08:24]Um if if not a complete rupture, you know, 326 years of uh built-up stress out here is uh a little concerning. I I see no reason for this to go 500 years, 4 500 years like 9,000 years ago, 8,000 years ago.

[00:08:42]Uh even in the last 6,000 years, there was only two intervals that lasted 325 years or uh were longer than 325 years.

[00:08:51]Uh the majority of those were under 325 years. And I say 325 years because that's how long uh it's been. Well, technically 326 years because 1,700 was that long ago and that's when the last big earthquake struck here. But, we do have partial ruptures out here. That means northern California, southern coast of Oregon, uh 8.1, 8.2 magnitude is what uh we could be looking at, potentially a little bit larger.

[00:09:18]Uh so, I do want to point that out. We have to watch it very closely here, folks.

[00:09:24]Literally right just shy of the Cascadia.

[00:09:28]Here's the Cascadia subduction zone.

[00:09:30]It's out in the Gorda. This is the Gorda plate. But, you know, the the interesting point here is where the tremor is occurring.

[00:09:38]That's a sign that the Juan de Fuca plate or the Gorda plate is being further shoved underneath this area in this direction here.

[00:09:48]Diving down underneath the North American plate. Juan de Fuca plate is.

[00:09:53]And when those tremor counts are elevated, that means that this region back here is further receiving stress.

[00:10:00]And that is due west.

[00:10:02]Directly west of where that tremor count is occurring.

[00:10:06]Watch the southern end here closely. Uh let's see if they've updated this.

[00:10:12]It has been reviewed, but you know how we you know how it is. Sometimes a seismologist will review it and then another uh reviewer will come about and raise it up or lower it. I don't think they'll lower it um with that reading showing up on Mount St. Helens that far away.

[00:10:29]Um it's they'll probably if anything raise it up a little bit.

[00:10:34]But there it is showing up quite nicely.

[00:10:36]And that uh man, that just that occurred literally minutes following that 5.8. So it looks like the adjustment over here uh is doing something back over here across the Cascadia. It's a little concerning.

[00:10:51]I am going to screen capture that real quick.

[00:10:56]Keep that updated right there.

[00:11:02]So we'll save that. All right.

[00:11:05]Yeah, the 5.8 struck first. Okay, so that's a decent size event and I believe that's the largest one so far today. 5.

[00:11:12]Actually, the 5.9 way down into the southeast Indian ridges, but that's the second largest earthquake and the most recent one.

[00:11:21]And that magnitude is it can happen quite a bit here along the Aleutian Trench, but it looks like it's coming to that region where the earthquake wall is. Actually, it's a little bit east. Let me see here.

[00:11:35]Yeah, there's a Almost seems like there's an invisible wall here that's keeping the earthquakes halted right at this level here with very minimal earthquake activity across this region of the Aleutian Trench. And this area is very well primed for some large earthquake activity. Uh but it just hasn't happened yet. Uh there's been very minimal earthquake activity while everything else adjusts around it. But uh I'm watching that. So, from the Cascadia right now.

[00:12:02]Here's the last 30 days of earthquakes 2.5 and above. You can see, you know, we've had several swarms out here along the um This is the um um Blanco Fracture Zone down here. This is the Juan de Fuca Ridge. This is a uh there's some spreading seafloor centers out here in strike-slip boundary. That adds further stress here across the entirety of the Cascadia. What goes on down here across the strike-slip boundary here, the um Blanco Fracture Zone, adds further stress down here across the southern end of the Cascadia. And what goes on here across the Gorda Ridges, see the spreading seafloor center, it's creating new uh oceanic crust out here.

[00:12:42]That's even further adding stress down here across the southern end of the Cascadia. And that's uh yee That's where we got our our uh a 4.8 today. I just upgraded it.

[00:12:54]I'm telling you, folks.

[00:12:56]>> [sighs and gasps] >> Didn't I just say that somebody else is going to come along and and review it and upgrade it? Sure enough, 4.8. There we go. Goodness, goodness.

[00:13:14]Yeah, I don't know if they're going to bump it up to a five or not, but a 4.8 there, that's uh you know, the definitely more stronger than the uh 4.6 there.

[00:13:25]Uh Uh, knows? I mean, they could. But there's no way they're going to downgrade that. They shouldn't anyway without showing up across Mount St. Helens like that. So, it looks like Southern California is starting to get a little adjustment down here as well right now.

[00:13:37]This is a 4.8 reading down in Southern California.

[00:13:42]Uh, does look like there's a little aftershock right here.

[00:13:46]See that little spike?

[00:13:47]Nothing big, just a little bitty one cuz that 4.8 completely squashed line squashed that uh seismograph reading there across Petrolia.

[00:13:57]But, uh goodness, we do have to be on guard, folks. I'm showing you.

[00:14:11]Ooh, all right. I'm kind of getting some chills in my bones right now because when this when it goes out here, even a partial rupture is going to be quite damaging for the coastline and inland.

[00:14:20]Um, nothing like a 9.1 or a 9.0 is going to do, but you know, an 8-pointer, that's a significant event. That's something that we haven't experienced out here as as um as, you know, civilization society.

[00:14:34]The last one of uh the big rupture was, you know, 326 years ago. The Native Americans out here definitely experienced it, but uh us in the uh civilized world, so to speak, we uh will experience the we'll definitely experience it. The question is when.

[00:14:51]Uh we got to watch this. Got to watch these little events here.

[00:14:55]Uh the way the way the tremor counts have behaving out here in the last several months, I've been watching and noticing a trend here is that whenever tremor counts occur underneath the southern end specifically, it doesn't happen up here in northern northern end, but something about the southern end right now when we get these elevated tremor counts, it almost immediately causes stress and earthquakes up there across the the locked area or a little bit further upstream from where the tremor counts are occurring. So more shallower across this area. So this region is man, it is looking like it's about ready to pop.

[00:15:32]So just watch that closely folks. Let's go ahead and check out the world view of things here real quick.

[00:15:37]See what else we got Southern California. Yes, they had another three-pointer down here this afternoon outside of Redlands which is east of Riverside.

[00:15:47]Now, you know, one could say Southern California gets three-pointers. Yes, they do. But something about this area is swarming. It's definitely kicking up a lot of activity here. Here's the last 7 days of earthquake activity. 56 earthquakes down there in Southern California.

[00:16:04]Uh in this area three three-pointers with today's event a 3.4 being the largest.

[00:16:11]If you go back the last 30 days uh they've actually had 1 2 3 4 5 three-pointers with today's being the largest here. So something's brewing. Uh we did check out the historical model here for the San Jacinto fault zone in this morning's update and there's earthquakes here of large magnitudes that can occur. Uh and they've been over a hundred years since we've had any here along the San Jacinto fault zone. So that in itself is concerning.

[00:16:41]Uh but the more concerning factor is the stress that's being produced here on the San Andreas fault right now the southern end.

[00:16:49]Uh so we are you know, looking like maybe even seeing some larger activity down here in Southern California. It could this whole thing could go.

[00:16:58]And I'm sure you guys been seeing it there on social media where the Cascadia has been known to trigger the San Andreas fault.

[00:17:05]They pretty much all go at once or within hours of each other.

[00:17:09]So it's man.

[00:17:12]You know, I know a lot of people don't want to hear it. You know, you can't really go bury your head your head in the sand. You got to pay attention to what's going on out here. A lot of time has passed.

[00:17:21]We don't live on a planet that's dead tectonically. We live along a major plate boundary here that's been building up stress and strain on the Cascadia for 326 years.

[00:17:33]Uh the San Andreas Fault here uh has a lot of uh um a time as well built up on it.

[00:17:43]Lots of time.

[00:17:46]So, we're starting to light up out here across Bakersfield.

[00:17:49]Little earthquake there in Los Angeles area.

[00:17:53]Bay Area, I know it's quiet for now, but uh that's another area of concern.

[00:18:02]Let's see if we got anything else globally here.

[00:18:06]Little quiet across Japan right now.

[00:18:08]There's some deeper activity across the Tonga Trench with 4.5. Big old cluster of activity trying to wake it make its way down through New Zealand, South Island area, but it There's like a block going on there across North Island.

[00:18:22]Quite a few threes, even some fours making its way trying to make its way down here across the plate boundary. I I am watching that area closely as well.

[00:18:31]Uh the rest of the planet just some minimal activity across the typical regions, but the West Coast here lighting up. Look at that. We are lighting up out here, folks.

[00:18:41]Be on guard.

[00:18:46]Let's check out space weather real quick. We'll do a real quick recap there of the earthquake activity. Bunch of C-flare activity stirring up it looks like getting that instability here on the sun. That's coming off of a far-side sunspot.

[00:18:59]Uh don't really can't really see the entire area out here, but that is flaring a little bit.

[00:19:06]Does look like this region back over here starting to flare.

[00:19:09]Uh uh some C-flare activity.

[00:19:12]So, let's see. That's 4432 back over here.

[00:19:15]Uh that is Oh, yeah, that's starting to grow here in the middle area.

[00:19:20]That one's growing rapidly, it looks like.

[00:19:23]Looks like one of those like a severe storm, you know, thunderstorm there on the radar map is just really gearing up. This thing's starting to get uh quite a bit of complexity really quick.

[00:19:33]Um but that is off to the western side of the sun.

[00:19:36]Uh but we'll continue to watch that.

[00:19:38]This other area back over here massive area in terms of magnetic structure, it looks decent as well.

[00:19:44]Uh we'll have to watch these sunspots uh in the days ahead. 10% chance there for X-flare. It is increasing. M-flare at 45% chance. C-flare at 95, it looks like, but almost certain there we're going to see a C-flare. No major wars in the forecast for now, folks.

[00:20:01]All right, real quick glance here at the uh wea- or the um earthquake map once again.

[00:20:08]Yeah, no coincidence here that that earthquake struck like 10 minutes following that. The general Uh I don't even know if I have my general plate map here.

[00:20:21]But the Pacific Plate moves off here to the west-northwest. So, it looks like this earthquake here made just enou- enough adjustment here to kind of create a domino effect back here across the Cascadia area.

[00:20:37]You know, that's That's not a coincidence here. That is Those are definitely related. Thousands of miles apart, but related, for sure.

[00:20:46]You got to remember when you move around one area of the jigsaw puzzle, it can definitely have an effect uh locally and also at a distance. That's how the uh plate plate tectonic world works.

[00:20:59]Anyway, folks, I'm going to jump on uh YouTube here and upload this video.

[00:21:04]I I it's important we watch the Cascadia here very closely.

[00:21:09]Uh and more specifically the southern end.

[00:21:13]We'll chat at you guys here in the morning unless something happens overnight. Uh you guys would know about it, I'm sure. I live out here in northern California myself, so just outside of Chico.

[00:21:23]Um which will definitely be feeling the uh partial rupture and a full rupture.

[00:21:29]We're within that zone here.

[00:21:31]If well, not if, but when that does happen out here.

[00:21:35]Let me know, folks, if you did feel that earthquake where you're at, the 4.8.

[00:21:39]Um if you're in Oregon, uh northern California there. No tsunami with this, you know, it it's going to take the partial rupture or the full rupture out here to produce that tsunami, which will be a factor as well uh when it comes to the um the Cascadia subduction zone.

[00:21:58]We'll catch you guys out here in the morning. Have a good night.