Did I just feel an earthquake? Check here USGS Earthquakes and report it to USGS.

Be Ready for More Earthquakes

• Damaging earthquakes can occur in the future, so remember to: Drop, Cover, and Hold On
• More earthquakes than usual (called aftershocks) will continue to occur near the mainshock.  The mainshock is the largest earthquake in a sequence (a series of earthquakes related to each other).
• When there are more earthquakes, the chance of a large earthquake is greater which means that the cance of damage is greater.
• No one can predict the exact time or place of any earthquake, including aftershocks.  Following a quake, the USGS provides aftershock forecasts with percentages of probability of more earthquakes occurring within a given time period in the affected area.