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Sat Jan 5, 2013, 11:02 AM

Major quake Alaska

7.7 Mwp - SOUTHEASTERN ALASKA

Preliminary Earthquake Report
Magnitude 7.7 Mwp
Date-Time
5 Jan 2013 08:58:19 UTC
4 Jan 2013 23:58:19 near epicenter
5 Jan 2013 00:58:19 standard time in your timezone
Location 55.292N 134.728W
Depth 9 km
Distances
101 km (63 miles) SW (221 degrees) of Edna Bay, AK
102 km (64 miles) W (259 degrees) of Craig, AK
106 km (66 miles) S (182 degrees) of Port Alexander, AK
1032 km (641 miles) NW (315 degrees) of Vancouver, British Columbia, Canada
Location Uncertainty Horizontal: 12.3 km; Vertical 4.4 km
Parameters Nph = 362; Dmin = 103.8 km; Rmss = 1.14 seconds; Gp = 129°
M-type = Mwp; Version = 7
Event ID us c000ejqv
For updates, maps, and technical information, s

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14 replies, 1178 views

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Replies to this discussion thread
Arrow 14 replies Author Time Post
Reply Major quake Alaska (Original post)
nadinbrzezinski Jan 2013 OP
Viva_La_Revolution Jan 2013 #1
nadinbrzezinski Jan 2013 #2
Blue_In_AK Jan 2013 #8
Mrs. Overall Jan 2013 #3
Viva_La_Revolution Jan 2013 #4
Mrs. Overall Jan 2013 #5
Viva_La_Revolution Jan 2013 #6
Blue_In_AK Jan 2013 #7
nadinbrzezinski Jan 2013 #9
malaise Jan 2013 #10
nadinbrzezinski Jan 2013 #11
Blue_In_AK Jan 2013 #12
nadinbrzezinski Jan 2013 #13
malaise Jan 2013 #14

Response to nadinbrzezinski (Original post)

Sat Jan 5, 2013, 11:34 AM

1. short article here, 5 quakes total last night

LOS ANGELES (LALATE) – A strong Alaska earthquake today 2013 has been felt in Canada. The Alaska earthquake today Saturday, January 05, 2013 has prompted a series of major quakes, the most recent shortly after 3:28 am local time. No injures have yet to be reported by local news.

Officials tell news that a 5.1 magnitude Alaska earthquake today struck in the predawn morning hours. The quake, however, had virtually no depth. USGS indicates to news that the quake was only fifty-six miles west of Craig. The quake as also one hundred seventy-nine miles west of Prince Rupert, Canada. Officials tell news that the quake was two hundred eleven miles south of Juneau, Alaska and roughly the same distance from Terrace, Canada.

This is the latest in a series of strong Alaska earthquakes since last night. A 4.5 magnitude quake struck False Pass over night. A 4.5 and 4.7 magnitude quake struck Craig and Port Alexander this morning as well, USGS indicates to news.

But the strongest quake was a 7.5 magnitude quake. That quake erupted minutes before midnight. Officials tell news that the quake had virtually no depth. With nearly the same epicenter, the quake was only six miles below the earth’s surface. The quake was sixty-three miles west of Craig, one hundred eighty-eighty miles west of Prince Rupet and roughly two hundred miles from Juneau and Terrace.

http://news.lalate.com/2013/01/05/alaska-earthquake-today-2013-strikes-canada/

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Response to Viva_La_Revolution (Reply #1)

Sat Jan 5, 2013, 11:38 AM

2. I subscribe to the usgs service

Above a threshold I get 'em. It's a free service.

Blue and Dave live in Alaska, that is a significant quake.

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Response to nadinbrzezinski (Reply #2)

Sat Jan 5, 2013, 02:43 PM

8. Ken Burch lives in Juneau.

I imagine he felt it. All was quiet up here...we're too far away to feel anything.

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Response to Viva_La_Revolution (Reply #1)

Sat Jan 5, 2013, 11:45 AM

3. What does it mean when an earthquake has "virtually no depth"?

I understand that means close to the surface, but I guess I'm wondering what that indicates geologically. Underwater volcano?

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Response to Mrs. Overall (Reply #3)

Sat Jan 5, 2013, 12:11 PM

4. subduction zone quake

Volcanic quakes are not very big and don't cause Tsunamis.

I think this one was on the Explorer ridge http://en.wikipedia.org/wiki/Explorer_Ridge
which connects to the Juan de Fuca off WA and OR coasts. I'll be watching the reports for the next few days and keeping my fingers crossed that it doesn't jiggle something loose here too.

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Response to Viva_La_Revolution (Reply #4)

Sat Jan 5, 2013, 12:17 PM

5. Thanks for the info--I'm in WA State so am always interested about the subduction zone

and I have watched some of those TV shows predicting what would happen if there were a massive quake off the Northwest coast. Scary.
I went through the 1989 quake in SF and don't really want to be part of a massive event again, but darn, I love the West coast and wouldn't live anywhere else.

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Response to Mrs. Overall (Reply #5)

Sat Jan 5, 2013, 12:42 PM

6. I'm in Oregon, and I wouldn't live anywhere else either! nt

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Response to nadinbrzezinski (Original post)

Sat Jan 5, 2013, 02:41 PM

7. We didn't feel it up here at all,

but apparently the area around Sitka shook pretty hard and tsunami evacuations were enforced. I think the warnings have been lifted now.

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Response to Blue_In_AK (Reply #7)

Sat Jan 5, 2013, 02:47 PM

9. Good...

High, nothing like opening an email and going oh shit!!!!

I know AK is actually larger than CA...but still.

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Response to nadinbrzezinski (Reply #9)

Sat Jan 5, 2013, 02:50 PM

10. We had a small thead on the tsunami warning early this morning

and the warning was called off shortly after I started the thead. That's a big quake but as they said the worst of it was off shore and not many people were in that area.

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Response to malaise (Reply #10)

Sat Jan 5, 2013, 02:57 PM

11. I missed it, living in west coast time



And fighting a lovely something.

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Response to malaise (Reply #10)

Sat Jan 5, 2013, 03:01 PM

12. I didn't know about it until checking my Facebook feed this morning.

I have friends down there who were posting pictures from the evacuation centers. I think this is pretty close to where that earlier 7+ earthquake happened last year.

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Response to Blue_In_AK (Reply #12)

Sat Jan 5, 2013, 03:03 PM

13. Yeah it is

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Response to Blue_In_AK (Reply #12)

Sat Jan 5, 2013, 04:53 PM

14. Was on CNN as breaking at 6.00am ET

That's where I saw a report

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