Quake Watch 2013

M4.5 - 103km WSW of Craig, Alaska

Event Time
2013-01-05 09:32:08 UTC
2013-01-05 00:32:08 UTC-09:00 at epicenter
2013-01-05 04:32:08 UTC-05:00 system time
Location
55.102°N 134.634°W depth=9.2km (5.7mi)

Nearby Cities
103km (64mi) WSW of Craig, Alaska
291km (181mi) WNW of Prince Rupert, Canada
356km (221mi) S of Juneau, Alaska
393km (244mi) WNW of Terrace, Canada
625km (388mi) S of Whitehorse, Canada

January 5, 2013 --

Updated 0953 GMT (1753 HKT)

There were no initial reports of damage but the Pacific Tsunami Warning Center warned that a "tsunami with significant widespread inundation of is land is expected."

edition.cnn.com...

tsunami.jrc.it...

wcatwc.arh.noaa.gov...

ptwc.weather.gov...

Revised (7.7 -> 7.5): 7.5 earthquake, 106km WSW of Craig, Alaska. Jan 4 23:58 at epicenter (56m ago, depth 9.9km)

interactive version here

Originally posted by gemdog

Originally posted by Char-Lee
reply to post by TrueAmerican

 

Three days ago I saw weird clouds here on the West Coast of Ca unlike any I normally see it lasted most of the day.

Looking online I found people were calling the same type clouds "earthquake clouds" and that they according to one scientist can portend an earthquake from days to average of 30 days to a few months.

I am waiting to see.

Interesting description here can't be copy pasted

Notice they show China actually predicted a quake by these clouds.

www.terraresearch.net...

Clouds were toward the So end of the plate at the CA/Or border, there were very weird clouds again yesterday but not like the first "snake" cloud>

edit on 5-1-2013 by Char-Lee because: (no reason given)

edit on 5-1-2013 by Char-Lee because: (no reason given)

Im in the SF bay area, right on the Hayward fault, and I saw the same clouds, it kinda freaked me out. Ive only seen them a few times in several years, and last week they started in the morning and lasted all day, all over the sky, right above the faultline. I thought "oh, pretty!" then I thought "earthquake clouds, oh, sh*t."
/

I have been running my fingers(mouth) about the potential for a big quake in the Frisco area based on quite a bit of little shakers in the general area of the bay.

Now I know these 'earthquake cloud' sources are rumored to be potentially pseudo-science; However, deep down I think there is a lot of merit to this theory.

Having said all that jazz....Here's an observation made by a member in the Frisco area.

Originally posted by phoenixlights321
Cascadia, we're in for a bumpy ride! Let's go 2013!

^^^^^^
Oh boy, here we go! Kicking off to an exciting start for Cascadia.

That 7.5 was right on queue.

Average Magnitude of Mag 7 quakes: 7.435928672
Average number of days between M7 quakes: 24.33
Number of days elapsed since last M7: 25

An average quake at exactly the average interval.

Pretty average really!

reply to post by PuterMan


Why don't you post the averages for this size quake in the Cascadia Subduction Zone?

reply to post by Rezlooper


That will take a little working out but I will see if I can come up with it tomorrow. Off the top of my head however in the subduction zone the average is around every 15 years for quakes above M6.5 - but I need to check that.

ETA: This is the M6.5+ equivalents from my Cascadia stress project but this includes the Alaska plate boundary as well as the subduction zone. I will dig out the subduction zone ones as soon as I can.



You probably are aware of this chart for Mag 8 to Mag 9?

reply to post by PuterMan


Yeah, last 9.0 was in 1700 I think. Thanks for the info. I know they are having these tremors over recent months, but how average is this and were any of those over 7.0?

@ phoenixlights321 and Rezlooper

do you have any evidence that earthquakes on this section ( Queen Charlotte-Fairweather Transform Fault System) affect tthe Alsaka subuction zone to the north or the Cascadia subduction zone, below the Triple Junction to the south

i.e neither this quake nor the Queen Charlotte Is. 7.7 last year are/were within the Cascadia zone, which is below the Triple Junction.

reply to post by muzzy


Sorry, these two 7.7's in Canada were on the Queen Charlotte fault. Interesting to note that these are the largest quakes that Canada has seen since 1958 when a 7.9 struck 500 miles northeast of the Queen Charlotte Islands. So, two in just over two months is significant.

Originally posted by Rezlooper
reply to post by muzzy

 

Sorry, these two 7.7's in Canada were on the Queen Charlotte fault. Interesting to note that these are the largest quakes that Canada has seen since 1958 when a 7.9 struck 500 miles northeast of the Queen Charlotte Islands. So, two in just over two months is significant.

I agree!!

And the fact that the aftershocks over 2.5 have all but ceased over the past 30 hours is a bit concerning.

Maybe the giant monster has let off all the pressure needed to prevent the mega-quake.

But only time will tell.

earthquake.usgs.gov/earthquakes/eventpage/usc000eku#summaryI tried to give a link to usgs, but I keep screwing it up.

reply to post by crappiekat

Were you by chance trying to link the event page for the 4.4 west of Tofino, B.C?

I just spotted it myself. I hope it's just a lone event and not signalling anything worrisome.

reply to post by Nyiah


Yes thank you. I've been practicing my linking and I thought I was doing really good. Thats what I get for thinking

I did one of these for the SE Alaska quake, I quite like the idea of recording/archiving the 5+ quakes like this.
Readers can make an informed decision as to the magnitude themselves.
And maybe we can work out how they convert between the different mag types.




NIED didn't catch that Taiwan one on their preliminary data, probably show up later on the reviewed data in a few days
GCMT a bit slow too.

a felt one

Magnitude ML 3.0
Region GREECE
Date time 2013-01-07 18:24:18.8 UTC
Location 38.11 N ; 23.70 E
Depth 5 km
Distances 15 km NW Athens (pop 729,137 ; local time 20:24:18.8 2013-01-07)
10 km N Peristérion (pop 137,659 ; local time 20:24:18.8 2013-01-07)
3 km N Áno liósia (pop 28,529 ; local time 20:24:18.8 2013-01-07)

EMSC

Events in the PNW

Mag Time (Local) Depth (Km)
4.4 44988/05/25 21:27:20 PDT 10.0
1.3 2013/01/07 09:59:10 PST 2.2
0.8 2013/01/07 05:21:03 PST 5.2
1.0 2013/01/06 06:16:18 PST 5.2
1.6 2013/01/06 00:48:48 PST 16.9
1.9 2013/01/05 22:31:09 PST 25.9
1.7 2013/01/05 20:50:08 PST 24.9
2.4 2013/01/05 10:12:43 PST 0.0
1.0 2013/01/05 08:16:00 PST 24.7
1.1 2013/01/04 12:51:59 PST 6.0
1.2 2013/01/04 11:51:51 PST 0.0
1.7 2013/01/03 18:26:51 PST 8.1
1.0 2013/01/03 12:07:02 PST 0.0
0.8 2013/01/03 11:59:24 PST 0.0
0.7 2013/01/03 06:09:17 PST 10.1
2.2 2013/01/03 05:14:25 PST 47.7
-0.3 2013/01/02 22:07:54 PST 4.0
0.8 2013/01/02 17:48:02 PST 10.1
0.4 2013/01/02 14:53:44 PST 1.5
1.7 2013/01/02 14:38:44 PST 10.0
1.7 2013/01/02 13:28:11 PST 9.0
-0.4 2013/01/02 01:54:53 PST 0.3
0.9 2013/01/02 01:38:50 PST 22.0
0.6 2013/01/01 23:01:23 PST 10.6
0.8 2013/01/01 22:37:05 PST 26.0
0.4 2013/01/01 19:32:35 PST 9.8
2.7 2013/01/01 17:54:21 PST 0.0
1.1 2013/01/01 17:21:30 PST 3.5
2.5 2013/01/01 14:13:14 PST 0.0
0.8 2013/01/01 04:37:38 PST 6.8
2.1 2013/01/01 02:41:49 PST 3.9

Originally posted by violet


Events in the PNW

Mag Time (Local) Depth (Km)
4.4 44988/05/25 21:27:20 PDT 10.0
1.3 2013/01/07 09:59:10 PST 2.2
0.8 2013/01/07 05:21:03 PST 5.2
1.0 2013/01/06 06:16:18 PST 5.2
1.6 2013/01/06 00:48:48 PST 16.9
1.9 2013/01/05 22:31:09 PST 25.9
1.7 2013/01/05 20:50:08 PST 24.9
2.4 2013/01/05 10:12:43 PST 0.0
1.0 2013/01/05 08:16:00 PST 24.7
1.1 2013/01/04 12:51:59 PST 6.0
1.2 2013/01/04 11:51:51 PST 0.0
1.7 2013/01/03 18:26:51 PST 8.1
1.0 2013/01/03 12:07:02 PST 0.0
0.8 2013/01/03 11:59:24 PST 0.0
0.7 2013/01/03 06:09:17 PST 10.1
2.2 2013/01/03 05:14:25 PST 47.7
-0.3 2013/01/02 22:07:54 PST 4.0
0.8 2013/01/02 17:48:02 PST 10.1
0.4 2013/01/02 14:53:44 PST 1.5
1.7 2013/01/02 14:38:44 PST 10.0
1.7 2013/01/02 13:28:11 PST 9.0
-0.4 2013/01/02 01:54:53 PST 0.3
0.9 2013/01/02 01:38:50 PST 22.0
0.6 2013/01/01 23:01:23 PST 10.6
0.8 2013/01/01 22:37:05 PST 26.0
0.4 2013/01/01 19:32:35 PST 9.8
2.7 2013/01/01 17:54:21 PST 0.0
1.1 2013/01/01 17:21:30 PST 3.5
2.5 2013/01/01 14:13:14 PST 0.0
0.8 2013/01/01 04:37:38 PST 6.8
2.1 2013/01/01 02:41:49 PST 3.9

Where did that 4.4 mag at the top of your list come from. It isn't even formatted like the rest.