Hi Redflare,

Keeping an eye on the local lost pets section of the newspaper (more lost pets = higher chance of an earthquake) in conjunction with exceptional high and low tides (spring and neap tides) is a good way to predict an earthquake.

Apparently there is also a correlation between large local transistions in ionospheric electron density and ionospheric temperatures a few days prior to an earthquake.

The RTCM SC104 error correction data used in the differential error correction for GPS could therefore also have a predictive signal for earthquakes within the local datasets produced by locally based 300KHz beacon transmitters. Many of the SC104 datasets produced by the beacon transmitters are available on the internet.