Alaskan Earthquake Jan 5, 2013

Earlier, around 3:58 AM EST (11:58 PM AST, yesterday) a 7.5 magnitude earthquake struck off the coast of Alaska, about 63 miles west of the town of Craig, and about 200 miles south of the capital, Juneau.  There was a resulting tsunami warning issued for portions of southeastern Alaska and British Columbia, Canada after the quake, but they were taken down within a few hours.  The highest measured wave heights were about 6″ above normal sea level.

Folks waited out in a high school in Sitka, Alaska, on the island of Baranof, which lies just south of Juneau.  This image is from the AP.

Several smaller quakes, aftershocks occurred just north of the original earthquake.  This image from the USGS.gov, lists the quakes in order from when they occurred.  For about seven hours, the small quakes shook the ground, with most of a magnitude in the 4.0 range.  So far, no damage has been reported.This was a strike-slip faulting event that occurred near the plate boundaries of the Pacific and North American Plate.   That boundary between the two plates commonly sees seismic activity as it is part of the famous, Ring of Fire.  Below is the image, from www.geology.com, of the plates of the world.  The Ring of Fire is around the Pacific Plate, where numerous volcanoes and fault zones are located.

From Wikipedia.org, this image shows the Ring of Fire, and how it impacts so many nations, over such a large distance.  A couple of volcanoes are listed along the ring, along with some of the deepest trenches.  Trenches are where two plates are moving towards each other and one plate goes under another one, creating subduction zones.  The Marianas Trench, just east of the Philippines, is the deepest of the trenches, and goes down as far as 6.85 miles at its southern point, Challenger Deep.

File:Pacific Ring of Fire.svg

Take care and have a pleasant weekend.

Addison Green

@agreenWNTV

One response to “Alaskan Earthquake

Leave a comment

Your email address will not be published. Required fields are marked *

Tweets

Emergency officials had to #rescue some residents of Evansville, Indiana who were caught off-guard by flash… https://t.co/HZrDMZzidQ

8 minutes ago by WeatherNation

An overnight light show! #Severestorms blew through the central US bringing major #lightning and #flooding. The thr… https://t.co/TbqVXQvmtq

1 hour ago by WeatherNation

Our Field Correspondents have been on the scene as #flooding and #severeweather continued into Saturday. WATCH HERE: https://t.co/BI9P4hf7GD

2 hours ago by WeatherNation

Wow! Check out the size of these #hail stones in Cameron, #Oklahoma Friday evening. Photo: rubyjewelstudio/Instagra… https://t.co/F1PeMxP9xK

6 hours ago by WeatherNation

WeatherNation is LIVE this evening tracking the #severe weather threat across the country. Watch live:… https://t.co/jFF3KCS6Ry

6 hours ago by WeatherNation

Strong storms created flash flooding in Columbus, #Indiana Friday evening. 🎥: wild_dandelion_farm/Instagram #INwx https://t.co/j3P6sePSgp

7 hours ago by WeatherNation

Strong to #severe storms are impacting portions of #Ohio this evening. 🎥: Melissa.rosemc #OHwx https://t.co/n1VMZZoVCf

7 hours ago by WeatherNation

New Severe Thunderstorm Watch box issued for eastern Oklahoma-southern Illinois 'til 5 a.m. Have a way of getting w… https://t.co/zfFoBVSYqr

9 hours ago by WeatherNation

Going to be in the 90's tomorrow in D.C. while many other locations in the East will likely tie or set a new record… https://t.co/InaYUE5Ews

10 hours ago by WeatherNation

Thundersnow! Some convective components to this storm stick around as snow starts to fall in Colorado. #COwx https://t.co/iNiGgAWrBG

11 hours ago by WeatherNation

St. Louis has already gotten stormy, hail hitting earlier today. The greater #STL area could get up to 5-7 inches o… https://t.co/HXlpZpconw

12 hours ago by WeatherNation

Dr. Ariel Cohen and Lead Forecaster Rich Thompson of @NWSSPC work on today's severe weather forecast during intervi… https://t.co/BYvZXiO4li

13 hours ago by WeatherNation

The concern for flooding is growing from the Southern Plains into the Great Lakes for this weekend:… https://t.co/m7NSC5D6DB

14 hours ago by WeatherNation

Winter storm warnings stretch all the way down to Texas! Tonight and through the day Saturday will be cold/snowy/wi… https://t.co/wVL8Ea6jj9

15 hours ago by WeatherNation

A look at the severe weather threat in the nation from tonight into this weekend - https://t.co/pDTlJy65XC https://t.co/15pwG1j7xJ

16 hours ago by WeatherNation

Video in Colorado earlier today shows a mix of what appears to be snow & graupel falling from the sky. Winter isn't… https://t.co/DRbh5cjnm3

17 hours ago by WeatherNation

A skier's delight continues in the West with more snow ahead for the Rockies and Tetons - https://t.co/bJnGagV8x5 https://t.co/EOGhFe6rko

20 hours ago by WeatherNation

There's a little bit of everything in this timelapse from the Puget Sound region....#clouds, #sun, waves, wind, and… https://t.co/rmedBVIiAV

23 hours ago by WeatherNation
Follow Us