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M 2.8 earthquake – 12 km S of Indios, Puerto Rico

·
Local time: Dec 30, 2019 · 15:59 (UTC-4)

MicroShallow · 11 km Reviewed by a seismologist
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Magnitude
2.8duration magnitude (md)
Depth
11 kmShallow earthquake
Epicenter
17.880, -66.82518 km from Yauco
Energy released
0.2 tons of TNTless than one Hiroshima bomb
Felt reports
—"Did You Feel It?" responses
Shaking intensity
—not estimated
Aftershocks
500M2.5+ within 30 km, up to 60 days
Significance
116USGS score, 0–1,000+
Not rare around here

An earthquake at least as strong struck within 300 km on Dec 30, 2019.

How strong was it?

Micro earthquake. It released 0.2 tons of TNT, 1,995 times less than a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.

Chile 1960 M 9.5
Japan 2011 M 9.1
San Francisco 1906 M 7.9
Turkey 2023 M 7.8
Haiti 2010 M 7.0
Northridge 1994 M 6.7
This earthquake M 2.8

Aftershocks

500 earthquakes of M2.5+ within 30 km in the 60 days after.

The strongest earthquakes within 300 km

Since 1900, around Puerto Rico.

In the week before

Earthquakes within 30 km in the 7 days before this one: possible foreshocks.