Live earthquake check
Earthquakes near San Marcos today
Updated
No M2.5+ earthquake within 100 km of San Marcos in the last 24 hours 2 smaller quakes (largest M1.8) were recorded within 100 km; the latest 5 hours ago.
Recent earthquakes near San Marcos
No earthquake of magnitude 2.5 or more was located within 100 km of San Marcos in the past 30 days.
USGS also lists 2 smaller quakes (below M2.5) within 100 km in the last 24 hours; these are rarely felt.
M2.5+ within 150 km, past 30 days, newest first. Times in America/Los_Angeles.
Was there an earthquake in San Marcos just now? This page checks the live USGS catalogue for quakes around San Marcos, California, United States and updates every few minutes.
- Last 24 hours
- 0 M2.5+ within 100 km
- Last 7 days
- 0 M2.5+ within 100 km
- Last 30 days
- 0 M2.5+ within 100 km
- Largest in 30 days
- — none within 100 km
- Largest in past year
- — none within 150 km
- Past year count
- 150 M2.5+ within 150 km
- Nearest in 30 days
- —
Largest earthquakes near San Marcos in the past year
USGS has no M2.5+ earthquake within 150 km of San Marcos in the past 12 months, so the area is seismically quiet by global standards. Small quakes below the reporting threshold can still happen.
Was it felt in San Marcos?
None of the quakes listed has "Did You Feel It?" reports in the USGS feed, which usually means shaking at the surface was weak or the area has few reporters.
If you felt shaking, you can report it to USGS; reports refine the intensity map within minutes.
Tsunami warning status
None of the earthquakes near San Marcos in the past year carried the USGS tsunami flag, which USGS sets for large quakes in oceanic regions where the tsunami warning centres issue messages.
Official tsunami warnings come from the NOAA tsunami warning centres (tsunami.gov) and national agencies; follow local authorities if you are on a coast after strong shaking.
Earthquakes around the world today
Worldwide, USGS listed 171 earthquakes of M1+ in the last 24 hours; the largest was M6.1 Fiji region.
USGS lists every magnitude in the United States but outside it coverage is complete only from about M4–4.5, so smaller local quakes reported by national agencies may be missing. Magnitudes and locations are revised for hours after an event.
Earthquakes near other cities in United States and nearby
Earthquake pages
More live data for San Marcos
Data: USGS Earthquake Hazards Program (ComCat), GeoNames (cities, CC BY 4.0).