Magnitude 8.9 - NEAR THE EAST COAST OF HONSHU, JAPAN 2011 March 11 05:46:23 UTC

Earthquake Details

• This is a computer-generated message -- this event has not yet been reviewed by a seismologist.

Magnitude	8.9
Date-Time	Friday, March 11, 2011 at 05:46:23 UTC Friday, March 11, 2011 at 02:46:23 PM at epicenter Time of Earthquake in other Time Zones
Location	38.322°N, 142.369°E
Depth	24.4 km (15.2 miles) set by location program
Region	NEAR THE EAST COAST OF HONSHU, JAPAN
Distances	130 km (80 miles) E of Sendai, Honshu, Japan 178 km (110 miles) E of Yamagata, Honshu, Japan 178 km (110 miles) ENE of Fukushima, Honshu, Japan 373 km (231 miles) NE of TOKYO, Japan
Location Uncertainty	horizontal +/- 13.5 km (8.4 miles); depth fixed by location program
Parameters	NST=350, Nph=351, Dmin=416.3 km, Rmss=1.46 sec, Gp= 29°, M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=A
Source	USGS NEIC (WDCS-D)
Event ID	usc0001xgp Message hawaii.2011.03.11.073148 Tsunami Information Earthquake Information Message Time: 10 Mar 2011 09:31 pm HST Message Num: 3 Message Text: click to read Message Type: Tsunami Warning Warning: Hawaii Watch: none ETAs / Obs: measurements Preliminary (PTWC) Official (USGS) Origin Time: 10 Mar 2011 7:46 pm HST 10 Mar 2011 7:46 pm HST Magnitude: 8.8 Mwp (reviewed by PTWC) 7.9 Latitude: 38.2° N 38.3° N Longitude: 142.5° E 142.4° E Depth: 24.4 km (15.2 mi) Location: Near East Coast of Honshu Japan More Info.: updated earthquake information from the USGS NEIC