Ben Davidson here from QuakeWatch.net and SpaceWeatherNews.com - there are a number of scientists I work with who are going to begin producing earthquake warnings on large scales for governments and others. One of the things we will use is the Outgoing Longwave Radiation anomalies, which are delivered in data formats similar to those already used on this site.
This graphic will give information about rainfall, tropical development areas, MJO, and ion release as a potential seismic precursor.
Please consider if this is a possible addition to the overlays. Site master please contact me by email if you need the links to the data - but you should be able to find them easily.