Periodically, recorded events are collated and sent to this web page. The amount of data depends on how many earthquakes are recorded, this can range from zero to a few a day.

It should be pointed out that it may be necessary to change your cache settings in your browses preference selector. This will then allow an image to be updated that has the same name as a previous loaded image. When using Netscape you can hold down the shift key and click the reload button to update the image. (Maybe)