M6.1 earthquake 99 km WNW of Mantua, Cuba
A magnitude 6.1 earthquake struck 99 km WNW of Mantua, Cuba on Mon, Jun 8, 2026, 2:00 PM GMT-4 (18:00 UTC), 26 km (16 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (mww), strong
- Local time
- UTC
- 2026-06-08 18:00:27 UTC
- Depth
- 26.0 km (16.2 mi), shallow
- Epicenter
- 22.791° N, 85.092° W
- Region
- Cuba
- Felt reports
- 5,777
- Strongest shaking
- V, moderate shaking
- PAGER alert
- Green
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- V, moderate shaking
- Peak ground acceleration
- 6.9% of gravity
- Peak ground velocity
- 5.5 cm/s
- Map
- Automatic
Did you feel it?
5,777 people reported to the USGS what they felt; the strongest reported shaking was VI, strong shaking.
Estimated impact
The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.
- Alert level
- Green: little or no damage or loss of life expected
| Range | Chance |
|---|---|
| Under 1 | 90% |
| 1 to 10 | 9% |
| 10 to 100 | Under 1% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
| Range, million USD | Chance |
|---|---|
| Under 1 | 94% |
| 1 to 10 | 6% |
| 10 to 100 | Under 1% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
Aftershock forecast
The chance of at least one aftershock this large or larger, from the USGS operational aftershock forecast, issued Mon, Sep 28, 2026, 6:00 PM UTC. The USGS updates it as the sequence unfolds.
| Within | M3+ | M4+ | M5+ | M6+ | M7+ |
|---|---|---|---|---|---|
| 1 day | 6% | Under 1% | Under 1% | Under 1% | Under 1% |
| 1 week | 33% | 4% | Under 1% | Under 1% | Under 1% |
| 1 month | 71% | 15% | 2% | Under 1% | Under 1% |
| 1 year | 98% | 57% | 10% | 1% | Under 1% |
In the coming week the USGS expects about 0 aftershocks of magnitude 3 or more, and most likely between 0 and 2.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Reverse (thrust)
- Moment magnitude
- 6.1 Mww
- Nodal plane 1
- Strike 153°, dip 46°, rake 107°
- Nodal plane 2
- Strike 310°, dip 46°, rake 73°
- Landslide alert
- Green
- Liquefaction alert
- Green
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.9 km horizontally, 1.5 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- From modeling of broad-band P waveforms
- Station coverage gap
- 22°
- Stations used
- 264
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.1 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayCuba earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000srjx (also filed as attgbrcr, usauto7000srjx). Read Wed, Sep 30, 2026, 4:36 AM UTC.