*USGS Earthquake Early Warning*Seismic Warning Systems*Earthquake Early Warning at Caltech*Italian and Japan Seismic Early Warning System*Seismic Alert System of Mexico (In Spanish)*CREWS: Coachella Valley Regional Earthquake Warning System*European-Mediterranean Sismological Center, real-time earthquake information website.
==See also==*Earthquake engineering*Earthquake preparedness*Hayward fault – a typical slip-strike fault within a highly urbanized region*P-wave*Seismic retrofit==References====External links==*USGS Earthquake Early Warning*Seismic Warning Systems*Earthquake Early Warning at Caltech*Italian and Japan Seismic Early Warning System*Seismic Alert System of Mexico (In Spanish)*CREWS: Coachella Valley Regional Earthquake Warning System*European-Mediterranean Sismological Center, real-time earthquake information website.