Magnitude 4.3 quake near the California-Mexico border

Last updated: 2018-03-26 17:50:55 UTC

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The Anza group at the University of California San Diego operates a broadband seismograph network consisting of 13 (+ 2) three component broadband seismograph stations centered near Anza Californa.

On Thursday, Feb. 18th at approximately 7:03 PST we recorded a moderate quake (ml 4.3) located near the California-Mexico border. 14 minutes later we recorded an aftershock with a calculated magnitde = 3.5. Preliminary source parameters are shown below.

Red star is the estimated epicenter, yellow triangles are Anza stations.

Event Map

Event parameters

Latitude	Longitude	Depth	Origin Time	ml
32.6477	-116.2108	13.8452	2/19/1999 (049) 03:08:32.427	4.23
32.6526	-116.1889	12.7458	2/19/1999 (049) 03:22:38.323	3.49

You may view:

A plot showing the vertical components for all stations

Learn more about the Anza group (including who works here, other networks, nuclear tests in China/India/Pakistan).
Learn more about the ANZA network (includes more station information, research, etc).

URL: http://eqinfo.ucsd.edu/special_events/1999/049/a/index.php [Last updated: 2018-03-26 17:50:55 UTC]