A very strong earthquake/aftershock with recorded magnitude of 6.0 hit Alaska region on January 31, 2013 at 09:53 UTC. Epicenter was located 101 km (62 miles) W of Craig, Alaska and 316 km (196 miles) WNW of Prince Rupert, Canada at coordinates 55.584°N, 134.745°W. USGS reported depth of 9.7 km (6.0 miles). EMSC shows slightly different data, at this time they are reporting Mw 5.9 and depth of only 2 km.
This is the same region that was hit by a massive 7.5 magnitude earthquake on January 5, 2013. Read that report here: Massive earthquake M 7.5 struck near Alaska – Tsunami warning was in effect for Alaska and British Columbia coasts. Coordinates of that one were just slightly different: today's earthquake coordinates are 55.584°N, 134.745°W vs. January 5th earthquake 55.292°N, 134.728°W.
GDACS reported that this earthquake can have a low humanitarian impact based on the magnitude and the affected population and their vulnerability. Only few people are living within 100 km.
No tsunami is expected.
|Depth||9.7 km (6.0 miles)|
|Distances||101 km (62 miles) W of Craig, Alaska|
303 km (188 miles) S of Juneau, Alaska
316 km (196 miles) WNW of Prince Rupert, Canada
409 km (254 miles) WNW of Terrace, Canada
|Location Uncertainty||horizontal +/- 13.5 km (8.4 miles); depth +/- 4.1 km (2.5 miles)|
|Parameters||NST=487, Nph=489, Dmin=103.5 km, Rmss=0.88 sec, Gp= 65°,|
M-type=teleseismic moment magnitude (Mw), Version=6