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A moderate magnitude 5.3 earthquake struck 15km SSW of Progreso, B.C., Mexico on Sunday, April 4, 2010 at 10:43:00 PM UTC. This shallow crustal event (10.0 km depth) released energy equivalent to approximately 1.2 kt of TNT. Here is the verified CI telemetry, live epicenter map, and ground shaking assessment.
(15km SSW of)5.3ML
Moderate Seismic Class
10.0km
Crustal Layer
32.453° N, 115.632° W
GPS Coordinates
1.2 kt
TNT Equivalent Power
CI
USGS Real-time Feed
A magnitude 5.3 event is classified as a moderate earthquake. Can cause slight to moderate damage to poorly constructed buildings. Felt widely across nearby communities within dozens of kilometers.
Difficult to stand. Damage negligible in good buildings; slight to moderate in ordinary structures.
Felt indoors. Hanging objects swing slightly. Vibration like a passing light truck.
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Earthquake strength is measured on a logarithmic scale. Compare this event with the full seismic scale:
Because seismic scales are logarithmic, each whole integer increase represents:
Southern and central Mexico lies directly above the Middle America Trench, where the oceanic Cocos and Rivera plates subduct beneath the North American Plate. This active subduction margin produces frequent intermediate and megathrust seismic events.
Originating at a depth of 10.0 km (Earth's Crust (0–70 km)), this rupture occurred occurred within the brittle upper crust. shallow earthquakes produce the highest peak ground acceleration and the sharpest surface shaking.
Following an earthquake of magnitude 5.3, an active aftershock sequence is expected over the coming days and weeks. In accordance with Omori's Law and Båth's Law of seismology, secondary tremors decrease in frequency over time, with the largest expected aftershock historically averaging approximately 1.0 to 1.2 magnitude units below the mainshock. Local residents should remain vigilant for secondary shaking, particularly when inspecting older structures or unreinforced masonry.
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