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Did You Feel It? FAQs - 12 Found

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Why isn't my zip code on the Did You Feel It? map?

The maps are automatically generated to cover a preset distance from the epicenter of the earthquake. If you felt an earthquake but were some distance from the epicenter, your zip code may be off the border of the map (although still counted in the total number of responses). If the earthquake is felt by a sizable number of people outside the original map range, a zoomed-out map may be made manually.

Also, our zip code database is always slightly out of date, even though it is periodically updated. It is possible that you may be in a zip code close to the epicenter, but it may not appear in our database. Please realize that updating the database with the newest zip code boundaries is not as simple as going to the US Postal Service. We have to go through a commercial source to get the coordinates of the zip code boundaries.

Tags: Seismology, Liquefaction, Tsunamis, Earthquakes, Faults, Tectonics, Magnitude, Prediction