Shallow M6.1 AFTERSHOCK hit in the South Pacific Ocean 326km from Arequipa (Peru) on Saturday Night.

Written by Earthquakelist.org on June 29th, 2024. Last updated July 5th, 2024.

In the night of Saturday June 29th, 2024, a shallow and strong MAG-6.1 aftershock hit in the South Pacific Ocean 326 kilometer from Arequipa, Peru. Shaking may have been felt by a total of 320 thousand people.

Earthquake Summary

This earthquake hit under water in the South Pacific Ocean, 38 kilometers (24 mi) off the coast of Peru, 326 kilometer west of Arequipa. The center of this earthquake had a very shallow depth of 19 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Jun 29, 2024 02:05 (Lima Time) - Jun 29, 2024 07:05 Universal Time.
Location:	326 km west of Arequipa, Peru. Coordinates 16°7'19"S 74°34'45"W.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 6.1 Detected by 28 stations. Maximum Error Range ±0.059 .
Depth:	19 km (12 mi) A very shallow depth.
Max. Intensity:	VI Strong On the Modified Mercalli Scale.
Tsunami Risk:	Low tsunami risk Earthquakes under MAG-6.5 do not usually cause tsunami's. Always stay cautious - More info here.

Minimal impact predicted

Based on scientific estimates by the US Geographic Survey (USGS), the risk of high fatalities for this earthquake is classified at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 fatalities, and a 96% chance that the number of fatalities falls no higher than 10.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 million US Dollars in economic damage and impact, and a 96% chance that the economic impact of this earthquake falls no higher than 10 million USD.

Roughly 320 thousand people exposed to shaking

The USGS has published a report estimating the number of people exposed to this earthquake. Acoording to their analysis, roughly 320 thousand have been exposed to shaking at an MMI level of II or higher.

The highest earthquake impact level for this earthquake is VI, which corresponds with strong shaking and probably light damage. Roughly 340 people are expected to be exposed to this level. Intensity level IV was experienced by the majority of people (around 210 thousand). In their region, light shaking and likely no damage can be expected. All exposure to shaking was within the borders of Peru .

People	MMI Level	Shaking	Damage
0	I	Not noticable	None
0	II	Very weak	None
86,510	III	Weak	Probably none
206,300	IV	Light	Likely none
23,160	V	Moderate	Very light
340	VI	Strong	Light
0	VII	Very Strong	Moderate
0	VIII	Severe	Moderate to heavy
0	IX	Violent	Heavy
0	X	Extreme	Very heavy

Nearby towns and cities

This earthquake may have been felt in Peru . Located 116 kilometer (72 mi) south-southeast of the epicenter of this earthquake, Minas de Marcona (Ica, Peru) is the nearest significant population center. The intensity of shaking and damage in Minas de Marcona is estimated to be around level IV on the Modified Mercalli Intensity scale (light shaking, likely no damage).

Multiple major population centers exist within 300km of the earthquake that struck today. Arequipa is located 326 km to the east (intensity unknown, possibly low). Ica is located 260 km to the north-northwest (intensity unknown, possibly low). Chincha Alta is located 345 km to the north-northwest (intensity unknown, possibly low).

The table below provides an overview of all places in proximity of today's earthquake. Where available, the estimated intensity on the Modified Mercalli Intensity Scale in each place is included. Places where this information is omitted likely experienced little impact.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place	Intensity (MMI)
116 km (72 mi) NNW from epicenter	Minas de Marcona Ica, Peru.	IV Light
149 km (93 mi) NNW from epicenter	Nazca Ica, Peru.	IV Light
207 km (129 mi) ESE from epicenter	Camaná Arequipa, Peru.	IV Light
256 km (159 mi) E from epicenter	El Pedregal Arequipa, Peru.
260 km (162 mi) NNW from epicenter	Ica Ica, Peru.
291 km (181 mi) ESE from epicenter	Mollendo Arequipa, Peru.
303 km (188 mi) NNE from epicenter	Andahuaylas Apurímac, Peru.
320 km (199 mi) NW from epicenter	Pisco Ica, Peru.
321 km (199 mi) NNW from epicenter	San Clemente Ica, Peru.
321 km (199 mi) E from epicenter	Cono Norte Arequipa, Peru.
325 km (202 mi) E from epicenter	Jacobo Hunter Arequipa, Peru.
326 km (203 mi) E from epicenter	Arequipa Arequipa, Peru.
327 km (203 mi) E from epicenter	Ciudad Satelite Arequipa, Peru.
327 km (203 mi) E from epicenter	Selva Alegre Arequipa, Peru.
331 km (206 mi) NNE from epicenter	Abancay Apurímac, Peru.
332 km (206 mi) N from epicenter	Ayacucho Ayacucho, Peru.
345 km (214 mi) NNW from epicenter	Chincha Alta Ica, Peru.
356 km (221 mi) N from epicenter	Huanta Ayacucho, Peru.
370 km (230 mi) ENE from epicenter	Yauri Cusco, Peru.
374 km (232 mi) N from epicenter	Huancavelica Huancavelica, Peru.
383 km (238 mi) ESE from epicenter	Ilo Moquegua, Peru.
387 km (240 mi) NNW from epicenter	Nuevo Imperial Lima Region, Peru.
390 km (242 mi) NNW from epicenter	Imperial Lima Region, Peru.
391 km (243 mi) NNW from epicenter	San Vicente de Cañete Lima Region, Peru.

Earthquake Intensity Map

The intensity in shaking and damage by this earthquake is illustrated through the map below. The highest intensity measured for this earthquake is VI.

I Not felt

II Weak

III Weak

IV Light

V Moderate

VI Strong

VII Very Strong

VIII Severe

IX Violent

X Extreme

Earthquake Intensity Map based on Shakemap Data provided by USGS.

Shaking reported by 10 people in 2 countries

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 10 people have reported shaking in 6 places in 2 countries (Chile, Peru).We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

Acarí, Arequipa, Peru: 5 people.
Vicuña, Coquimbo, Chile: 1 person.
Arequipa, Arequipa, Peru: 1 person.
Lima, Lima Provincias, Peru: 1 person.
Ica, Ica, Peru: 1 person.
Vista Alegre, Ica, Peru: 1 person.

This is likely an aftershock

Approximately 1 day before this earthquake hit, a larger 7.2 magnitude earthquake struck 37 km (23 mi) north-northeast of this one. For that reason, we classify the Mag. 6.1 earthquake as an aftershock.

Overview of foreshocks and aftershocks

Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.
Classification	Magnitude	When	Where
Main Shock	M 7.2	Jun 28, 2024 00:36 (Lima Time)	-
Aftershock	M 4.7	16 mins later Jun 28, 2024 00:52 (Lima Time)	41 km (25 mi) WSW from Main Shock.
Aftershock	M 4.7	33 mins later Jun 28, 2024 01:10 (Lima Time)	48 km (30 mi) WSW from Main Shock.
Aftershock	M 4.0	50 mins later Jun 28, 2024 01:26 (Lima Time)	28 km (18 mi) SW from Main Shock.
Aftershock	M 4.4	1 hr later Jun 28, 2024 02:05 (Lima Time)	41 km (26 mi) WSW from Main Shock.
Aftershock	M 4.4	2 hrs later Jun 28, 2024 02:26 (Lima Time)	36 km (22 mi) SW from Main Shock.
Aftershock	M 4.3	7 hrs later Jun 28, 2024 07:07 (Lima Time)	32 km (20 mi) W from Main Shock.
Aftershock	M 4.5	8 hrs later Jun 28, 2024 08:26 (Lima Time)	38 km (24 mi) SW from Main Shock.
Aftershock	M 4.0	19 hrs later Jun 28, 2024 19:22 (Lima Time)	17 km (10 mi) W from Main Shock.
Aftershock	M 4.2	1 day later Jun 29, 2024 01:46 (Lima Time)	22 km (14 mi) WSW from Main Shock.
Aftershock This Earthquake	M 6.1	1 day later Jun 29, 2024 02:05 (Lima Time)	38 km (23 mi) SSW from Main Shock.
Aftershock	M 5.3	1 day later Jun 29, 2024 02:22 (Lima Time)	41 km (26 mi) SSE from Main Shock.
Aftershock	M 4.3	1 day later Jun 29, 2024 04:54 (Lima Time)	24 km (15 mi) SW from Main Shock.
Aftershock	M 4.2	1 day later Jun 29, 2024 05:09 (Lima Time)	27 km (17 mi) S from Main Shock.
Aftershock	M 4.1	1 day later Jun 29, 2024 06:18 (Lima Time)	23 km (15 mi) SSE from Main Shock.
Aftershock	M 4.1	3 days later Jul 1, 2024 04:23 (Lima Time)	86 km (53 mi) W from Main Shock.
Aftershock	M 4.0	3 days later Jul 1, 2024 07:36 (Lima Time)	12 km (8 mi) WSW from Main Shock.
Aftershock	M 4.3	4 days later Jul 1, 2024 21:45 (Lima Time)	48 km (30 mi) WSW from Main Shock.

More earthquakes coming?

The risk of aftershocks decreases rapidly over time. Usually, aftershocks are at least one order of magnitude lower than a main shock.

It's always adviced to be cautious of the risk of a larger shock following any significant earthquake, however this risk is fairly small. There is a roughly 94 percent change that no larger main shock will follow in the days following this earthquake.

Read: How to Stay Safe during an Earthquake (cdc.gov).

Earthquakes like this are common in the region

Earthquakes of this strength occur quite regularly in the region. In total, 5 earthquakes with a magnitude of 6.1 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every 2 years.

Low tsunami risk

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

Based on early data it appears this earthquake was not strong enough (lower than MAG-6.5) to be likely to cause destructive tsunami's. However this earthquake appeared to have hit at a shallow depth under sea, so stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Factor	Under Sea?	MAG-6.5 or stronger?	Shallow depth?
Explanation	Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami.	Under MAG 6.5: Very unlikely to cause a tsunami. MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes. MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's.	Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor.
This Earthquake	This earthquake appears to have struck under the sea.	Not this earthquake. This earthquake had a magnitude of 6.1. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 19 km (12 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 05/07/24 00:18 (). This article is automatically generated based on available data. We keep checking multiple sources for additional information. This article gets updated as new details on this earthquake become available.