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Your report helps USGS map how strongly this earthquake was felt in your area.
Quick report
Urgent earthquake reported
USGS LIVE FEED6.6
Significant magnitude
Río Grande, Panama
Tectonic earthquake
1d ago 10 km deep
Aftershock activity
28 nearby events in this sequence
This quake is event 8 of 28.
28 total
Main event
M7.7
Aftershocks
27
Strongest aftershock
M6.6
Nearby USGS events grouped by distance and time. Sequence labels are contextual, not a formal USGS aftershock determination.
Event intelligence
What we know right now
Earthquake Alert separates measured facts, model estimates and public reports so magnitude is not confused with shaking or impact.
ObservedEstimatedReportedForecast
Magnitude + depth
M6.6 · 10 km
Significant magnitude event. Location: Río Grande, Panama.
Instrumental shaking
Extreme
USGS MMI 8.1. This describes shaking intensity, not earthquake magnitude.
Public experience
Severe
Community intensity CDI 7.2 from felt reports.
Impact context
YELLOW
USGS PAGER alert level when available. Impact depends on shaking, exposed population and vulnerability.
Scientific products attached
ShakeMapPAGERDYFIGround failureMoment tensor
A ground-failure product is available for landslide/liquefaction context.
Official hazard status
No correlated tsunami alert
No active correlated tsunami warning/advisory/watch is attached to this event in Earthquake Alert.
Stress Zone · Highly active
Local seismic activity context
Oct 10, 11:48 PM
24h activity
9
M1.5+ · 50 mi
6h burst
0
nearby events
Strongest 24h
M4.8
inside zone
9 M1.5+ events in 24 hours · about 4.2× the previous 6-day daily rate
Nearby seismic activity is concentrated above the recent local rate. This can occur in aftershock sequences, earthquake swarms, or short-lived regional clustering.
What Stress Zone is: Stress Zone is an Earthquake Alert activity-context label. It does not measure tectonic stress, identify a fault as ready to rupture, or predict a larger earthquake.
What experts would say
Plain-language interpretation of current USGS data — not a direct expert quote or earthquake prediction.
Local earthquake activity is elevated compared with the recent catalog around this event. Clustering alone does not show that a larger earthquake is imminent.
This is a significant earthquake. The most useful impact indicators are measured or modeled shaking, official hazard products and reports from affected communities.
USGS instrumental intensity is currently MMI 8.1, indicating strong or stronger modeled shaking in the affected area.
Felt reports
31
USGS Did You Feel It? reports
Reported intensity
Severe
CDI 7.2 · community reports
Instrumental intensity
Extreme
MMI 8.1 · estimated shaking
USGS status
reviewed
Reviewed by USGS
USGS impact
YELLOW
PAGER alert level when available
Follow this event
Follow this event for magnitude revisions, significant updates and related seismic developments.
Official source
Earthquake Alert organizes authoritative seismic and hazard information for rapid understanding. Always follow official emergency guidance for safety decisions.
Open USGS event page