Very strong aftershock with recorded magnitude 6.0 hit Alaska region

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.

Magnitude	6.0
Date-Time	Thursday, January 31, 2013 at 09:53:43 UTC Thursday, January 31, 2013 at 12:53:43 AM at epicenter
Location	55.584°N, 134.745°W
Depth	9.7 km (6.0 miles)
Region	SOUTHEASTERN ALASKA
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
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc000ez52

 

Magnitude 6.0 SOUTHEASTERN ALASKA – January 31, 2013