La Message Board Archives

Re: SISMO! - latest from UNAM and USGS

Posted by Bret B on January 21, 2012, 7:09 pm, in reply to "Re: SISMO!"

Here's the 3rd update from the Mexican university (UNAM) site ( They changed it back to the original data (I don't know where the 2nd update came from: a foul-up by some grad student?)

Magnitude 4.7, 10km deep, 27km SW of Cihuatlan (about 20km S of Barra de Navidad.)

Meanwhile the USGS finally listed it (

They show it as a magnitude 4.4, 20km deep, about 50km SSW of La Manzanilla.

So take your pick. Obviously there is quite a bit of uncertainty in locating these epicenters. To us, it felt pretty strong for a 4.4 or 4.7.

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