Planet Briefing

First published · Last updated

Magnitude 4.8 earthquake in Puerto Rico (18 Sep 2026)

GDACS reports a magnitude 4.8 earthquake at 7 km depth near Puerto Rico on 2026-09-18 13:19 UTC. Approximately 200,000 people experienced shaking assessed at MMI IV (light).

Categories: severe-weather-and-natural-disasters

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence
9/10
Geographic reach
3/10
Global importance
3/10
Impact magnitude
4/10
Positivity
2/10
Urgency
5/10

Why it matters

MMI IV shaking can be widely felt and cause alarm among residents and travelers; shallow depth increases local shaking. While damage is unlikely at this intensity, aftershocks may follow and authorities and responders should monitor for impacts and public safety concerns.

Location

Sources

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