Moderate mag. 4.4 earthquake - South Pacific Ocean, 190 km southwest of Arequipa, Peru, on Sunday, Feb 28, 2021 at 8:40 pm (GMT -5) -
This quake was likely an aftershock of the 5.5 quake South Pacific Ocean, 78 km southwest of Mollendo, Peru, Feb 27, 2021 9:16 pm (GMT -5), which had occurred 23 hours earlier.
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Moderate magnitude 4.4 earthquake at 10 km depth
1 Mar 01:51 UTC: First to report: EMSC after 10 minutes.
1 Mar 02:28: Magnitude recalculated from 4.3 to 4.4. Hypocenter depth recalculated from 41.0 to 10.0 km (from 25 to 6.2 mi). Epicenter location corrected by 25 km (16 mi) towards SSW.
1 Mar 02:28: Magnitude recalculated from 4.3 to 4.4. Hypocenter depth recalculated from 41.0 to 10.0 km (from 25 to 6.2 mi). Epicenter location corrected by 25 km (16 mi) towards SSW.
Earthquake details
| Date & time | Mar 1, 2021 01:40:51 UTC - |
| Local time at epicenter | Sunday, Feb 28, 2021 at 8:40 pm (GMT -5) |
| Status | Confirmed |
| Magnitude | 4.4 |
| Depth | 10.0 km |
| Epicenter latitude / longitude | 17.74°S / 72.64°W  (South Pacific Ocean, Peru) |
| Antipode | 17.74°N / 107.36°E |
| Shaking intensity | Light shaking near epicenter |
| Felt | 0 reports |
| Primary data source | EMSC (European-Mediterranean Seismological Centre) |
| Nearest volcano | Cerro Nicholson (166 km / 103 mi) |
| Nearby towns and cities | 101 km (63 mi) SW of Islay (pop: 4,820) | Show on map | Quakes nearby 104 km (64 mi) SW of Mollendo (Provincia de Islay) (pop: 29,000) | Show on map | Quakes nearby 124 km (77 mi) S of Camana (Camaná) (pop: 16,400) | Show on map | Quakes nearby 138 km (86 mi) W of Ilo (pop: 53,500) | Show on map | Quakes nearby 185 km (115 mi) SW of Jacobo Hunter (pop: 46,100) | Show on map | Quakes nearby 187 km (116 mi) SW of Ciudad Satelite (pop: 76,400) | Show on map | Quakes nearby 190 km (118 mi) SW of Arequipa (pop: 841,100) | Show on map | Quakes nearby 191 km (118 mi) WSW of Moquegua (pop: 54,500) | Show on map | Quakes nearby 193 km (120 mi) SW of Selva Alegre (pop: 72,700) | Show on map | Quakes nearby 790 km (491 mi) SE of Lima (pop: 7,737,000) | Show on map | Quakes nearby |
| Weather at epicenter at time of quake | Overcast Clouds  23.1°C (74 F), humidity: 73%, wind: 2 m/s (4 kts) from SE |
| Estimated seismic energy released | 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) | about seismic energy |
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Mag. | Depth | Location | Source |
| 4.4 | 10 km | NEAR COAST OF SOUTHERN PERU | EMSC |
| 4.5 | 10 km | 98 Km SSW of Islay (Matarani), Peru | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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