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M 4.6 earthquake – 9 km SSW of Tallaboa, Puerto Rico

·
Local time: Jan 7, 2020 · 04:30 (UTC-4)

LightShallow · 10 kmPAGER green Reviewed by a seismologist
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Magnitude
4.6local (Richter) magnitude (ml)
Depth
10 kmShallow earthquake
Epicenter
17.921, -66.76715 km from Yauco
Energy released
120 tons of TNTless than one Hiroshima bomb
Felt reports
1"Did You Feel It?" responses
Shaking intensity
4.3max. instrumental (MMI)
Aftershocks
500M2.5+ within 30 km, up to 60 days
Significance
326USGS score, 0–1,000+
Not rare around here

An earthquake at least as strong struck within 300 km on Jan 7, 2020.

How strong was it?

Light earthquake. It released 120 tons of TNT, 4 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 4.6

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.