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Arica (76.6 km SW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Arica / Light shaking (MMI IV) / single lateral shake / 15-20 s
Light mag. 4.7 earthquake - Tacna, 75 km northeast of Arica, Region de Arica y Parinacota, Chile, on Wednesday, May 18, 2022 at 6:27 am (GMT -5) -
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Light magnitude 4.7 earthquake at 139 km depth
18 May 11:32 UTC: First to report: RaspberryShake after 5 minutes.
18 May 11:36: Magnitude recalculated from 4.9 to 4.5. Hypocenter depth recalculated from 130.0 to 123.0 km (from 81 to 76 mi). Epicenter location corrected by 56 km (35 mi) towards E.
18 May 11:40: Now using data updates from USGS
18 May 11:36: Magnitude recalculated from 4.9 to 4.5. Hypocenter depth recalculated from 130.0 to 123.0 km (from 81 to 76 mi). Epicenter location corrected by 56 km (35 mi) towards E.
18 May 11:40: Now using data updates from USGS
Update Wed, 18 May 2022, 11:36
Moderate magnitude 4.9 quake hits 9 km southeast of Tacna, Peru early morning 4.9 quake 8.8 km southeast of Tacna, Peru, May 18, 2022 6:27 am (GMT -5)
An earthquake of magnitude 4.9 occurred only 9 minutes ago 9 km southeast of Tacna, Peru, the citizen-seismograph network of RaspberryShake reported.
The quake hit at an intermediate depth of 130 km beneath the epicenter near Tacna, Provincia de Tacna, Peru, early morning on Wednesday, May 18th, 2022, at 6:27 am local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.8 earthquake. A third agency, the German Research Centre for Geosciences (GFZ), reported the same quake at magnitude 4.5.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Sobraya (pop. 700) located 7 km from the epicenter, Tacna (pop. 280,100) 9 km away, Chipispaya (pop. 1,900) 63 km away, Tarata (pop. 3,100) 67 km away, Totoral (pop. 2,000) 75 km away, Ilabaya (pop. 9,500) 79 km away, Quilahuani (pop. 3,200) 83 km away, Chuquitira (pop. 4,200) 87 km away, and Candarave (pop. 3,400) 89 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
The quake hit at an intermediate depth of 130 km beneath the epicenter near Tacna, Provincia de Tacna, Peru, early morning on Wednesday, May 18th, 2022, at 6:27 am local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.8 earthquake. A third agency, the German Research Centre for Geosciences (GFZ), reported the same quake at magnitude 4.5.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Sobraya (pop. 700) located 7 km from the epicenter, Tacna (pop. 280,100) 9 km away, Chipispaya (pop. 1,900) 63 km away, Tarata (pop. 3,100) 67 km away, Totoral (pop. 2,000) 75 km away, Ilabaya (pop. 9,500) 79 km away, Quilahuani (pop. 3,200) 83 km away, Chuquitira (pop. 4,200) 87 km away, and Candarave (pop. 3,400) 89 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
Earthquake data
Earthquake details
| Date & time | May 18, 2022 11:27:07 UTC - |
| Local time at epicenter | Wednesday, May 18, 2022 at 6:27 am (GMT -5) |
| Status | Confirmed |
| Magnitude | 4.7 |
| Depth | 138.6 km |
| Epicenter latitude / longitude | 17.9676°S / 69.8301°W  (Tacna, Tacna, Chile) |
| Antipode | 17.968°N / 110.17°E |
| Shaking intensity | Light shaking |
| Felt | 2 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Tacora (28 km / 17 mi) |
| Nearby towns and cities | 45 km (28 mi) E of Tacna (Peru) (pop: 280,100) | Show on map | Quakes nearby 59 km (37 mi) SSE of Tarata (Peru) (pop: 3,050) | Show on map | Quakes nearby 66 km (41 mi) SE of Chipispaya (Peru) (pop: 1,930) | Show on map | Quakes nearby 75 km (47 mi) NE of Arica (Arica y Parinacota) (pop: 186,000) | Show on map | Quakes nearby 79 km (49 mi) SSE of Chuquitira (Peru) (pop: 4,220) | Show on map | Quakes nearby 84 km (52 mi) SE of Totoral (Peru) (pop: 1,980) | Show on map | Quakes nearby 85 km (53 mi) SSE of Quilahuani (Peru) (pop: 3,180) | Show on map | Quakes nearby 95 km (59 mi) SE of Ilabaya (Jorge Basadre, Peru) (pop: 9,490) | Show on map | Quakes nearby |
| Weather at epicenter at time of quake | Scattered Clouds  5.3°C (42 F), humidity: 24%, wind: 2 m/s (4 kts) from NE |
| Estimated seismic energy released | 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 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 |
| 4.7 | 139 km | 25 Km SSE of Palca, Peru | USGS |
| 4.5 | 125 km | Northern Chile | GFZ |
| 4.7 | 134 km | TARAPACA, CHILE | EMSC |
| 4.7 | 139 km | Northern Chile | RaspberryShake |
| 4.8 | 10 km | Near Coast of Peru | USP |
User reports for this quake (2)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
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