Shallow M4.1 Earthquake struck on Wednesday Afternoon near Corona in The United States.

Written by Earthquakelist.org on May 1st, 2024. Last updated May 19th, 2024.

Under land 6 miles from Corona in The United States, a shallow Magnitude 4.1 earthquake occurred in the early afternoon of Wednesday May 1st, 2024. The earthquake struck near a very densely populated region. The USGS has indicated there is a potential risk at tsunami's following this earthquake. Mexico is also near its epicenter.

Earthquake Summary

The earthquake struck on land in The United States, 6 miles (10 km) southwest of Corona in California. The center of this earthquake had a very shallow depth of 3 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	May 1, 2024 01:49PM (Los Angeles Time) - May 1, 2024 20:49 Universal Time.
Location:	6 mi SW of Corona, California, The United States. Coordinates 33°48'40"N 117°38'40"W.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 4.1 Detected by 137 stations. Maximum Error Range ±0.2 .
Depth:	3 mi (5 km) A very shallow depth.
Max. Intensity:	V Moderate On the Modified Mercalli Scale.
Tsunami Risk:	Potential tsunami risk The USGS has indicated there is a potential risk at tsunami's following this earthquake. Always stay cautious - More info here.

Potential 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.

There is a potential tsunami risk in the aftermath of this earthquake, immediately evacuate to higher grounds away from coastal areas and monitor advice from local authorities. The US Geographic Survey organization has indicated a potential risk for tsunami's following this earthquake.

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	Not this earthquake. This earthquake appears to have struck on land far from any coast.	Not this earthquake. This earthquake had a magnitude of 4.1. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 3 mi (5 km). Earthquakes this shallow could trigger a tsunami.

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 19 million people exposed to shaking

This earthquake may have been felt by around 19 million people. That is the expected population size of the area exposed to a level of shaking of II or higher on the Modified Mercalli scale according to the USGS.

The highest earthquake impact level for this earthquake is V, which corresponds with moderate shaking and very light damage. Roughly 1,300 people are expected to be exposed to this level. The majority of people (roughly 11 million) live in an area exposed to level II, where very weak shaking and no damage is expected. All exposure to shaking was within the borders of Mexico .

People	MMI Level	Shaking	Damage
8,075,000	I	Not noticable	None
11,290,000	II	Very weak	None
7,090,000	III	Weak	Probably none
363,900	IV	Light	Likely none
1,300	V	Moderate	Very light
0	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 struck within proximity of multiple countries. The United States and Mexico are both within 300km distance of its epicenter.

The closest significant population center near the earthquake is Corona in California, The United States. Corona is located 6 miles (10 km) southwest of the epicenter. The intensity of shaking and damage in Corona 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. Los Angeles is located 38 mi to the west-northwest and experienced an intensity of II (very weak shaking, no damage). Corona is located 6 mi to the north-east and experienced an intensity of IV (light shaking, likely no damage). Santa Ana is located 14 mi to the west-southwest and experienced an intensity of III (weak shaking, probably no damage).

An overview of nearby towns and cities is available in the overview below. If places don't have intensity data available, it likely means the experienced impact in those places was fairly small.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place	Intensity (MMI)
6 mi (10 km) NE from epicenter	Corona California, The United States.	IV Light
9 mi (15 km) WSW from epicenter	North Tustin California, The United States.	IV Light
10 mi (16 km) NNE from epicenter	Norco California, The United States.	IV Light
11 mi (18 km) WNW from epicenter	Yorba Linda California, The United States.	IV Light
11 mi (18 km) WSW from epicenter	Tustin California, The United States.	III Weak
11 mi (18 km) NNE from epicenter	Eastvale California, The United States.	IV Light
12 mi (19 km) W from epicenter	Orange California, The United States.	III Weak
12 mi (19 km) SSE from epicenter	Rancho Santa Margarita California, The United States.	III Weak
12 mi (19 km) SSW from epicenter	Lake Forest California, The United States.	III Weak
14 mi (22 km) WSW from epicenter	Santa Ana California, The United States.	III Weak
14 mi (22 km) WNW from epicenter	Placentia California, The United States.	III Weak
14 mi (23 km) N from epicenter	Chino California, The United States.	III Weak
14 mi (23 km) SW from epicenter	Irvine California, The United States.	III Weak
14 mi (23 km) SSW from epicenter	Laguna Hills California, The United States.	III Weak
14 mi (23 km) NNW from epicenter	Chino Hills California, The United States.	III Weak
15 mi (24 km) S from epicenter	Mission Viejo California, The United States.	III Weak
16 mi (25 km) W from epicenter	Anaheim California, The United States.	III Weak
16 mi (26 km) WNW from epicenter	Brea California, The United States.	III Weak
17 mi (27 km) WNW from epicenter	Fullerton California, The United States.	III Weak
17 mi (28 km) NE from epicenter	Riverside California, The United States.	III Weak
17 mi (28 km) SSW from epicenter	Aliso Viejo California, The United States.	III Weak
17 mi (28 km) N from epicenter	Ontario California, The United States.	III Weak
17 mi (28 km) W from epicenter	Garden Grove California, The United States.	III Weak
18 mi (29 km) NNW from epicenter	Pomona California, The United States.	III Weak
18 mi (29 km) NNW from epicenter	Diamond Bar California, The United States.	III Weak
19 mi (30 km) NW from epicenter	Rowland Heights California, The United States.	III Weak
19 mi (31 km) WNW from epicenter	La Habra California, The United States.	III Weak
19 mi (31 km) WSW from epicenter	Fountain Valley California, The United States.	III Weak
20 mi (32 km) N from epicenter	Upland California, The United States.	III Weak
20 mi (32 km) SW from epicenter	Costa Mesa California, The United States.	III Weak
21 mi (33 km) S from epicenter	Laguna Niguel California, The United States.	III Weak
21 mi (33 km) ESE from epicenter	Lake Elsinore California, The United States.	II Weak
21 mi (33 km) W from epicenter	Buena Park California, The United States.	III Weak
21 mi (33 km) N from epicenter	Rancho Cucamonga California, The United States.	III Weak
21 mi (34 km) W from epicenter	Westminster California, The United States.	III Weak
21 mi (34 km) SW from epicenter	Newport Beach California, The United States.	III Weak
23 mi (37 km) WSW from epicenter	Huntington Beach California, The United States.	III Weak
23 mi (37 km) NNE from epicenter	Fontana California, The United States.	III Weak
24 mi (39 km) E from epicenter	Perris California, The United States.	II Weak
24 mi (39 km) NW from epicenter	West Covina California, The United States.	III Weak
25 mi (40 km) WNW from epicenter	Whittier California, The United States.	II Weak
25 mi (41 km) ENE from epicenter	Moreno Valley California, The United States.	III Weak
25 mi (41 km) NE from epicenter	Rialto California, The United States.	III Weak
26 mi (42 km) WNW from epicenter	Norwalk California, The United States.	III Weak
28 mi (45 km) NW from epicenter	El Monte California, The United States.	II Weak
29 mi (47 km) NE from epicenter	San Bernardino California, The United States.	III Weak
29 mi (47 km) WNW from epicenter	Downey California, The United States.	II Weak
30 mi (49 km) SE from epicenter	Murrieta California, The United States.	III Weak
32 mi (51 km) W from epicenter	Long Beach California, The United States.	II Weak
38 mi (61 km) WNW from epicenter	Los Angeles California, The United States.	II Weak
42 mi (67 km) WNW from epicenter	Glendale California, The United States.	II Weak
157 km (98 mi) SSE from epicenter	Tijuana Baja California, Mexico.	I Not felt

Earthquake Intensity Map

The graph below overlays a map of the region around the epicenter with earthquake intensity data provided by the US Geographic Survey. The highest intensity level detected for this earthquake is V.

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 1 person

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 1 person has reported shaking in one place in Mexico.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

San Felipe, Baja California, Mexico: 1 person.

Aftershocks detected

After this earthquake struck, 1 smaller aftershock occurred. At a distance of 0.6 mi (0.9 km) east of this earthquake, an aftershock struck 4 hrs later. It measured a magnitude of 2.5

Before this earthquake struck, 3 smaller foreshocks occurred. A 2.8 magnitude earthquake hit 18 hrs earlier nearby.

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
Foreshock	M 2.7	2 days earlier Apr 29, 2024 06:40AM (Los Angeles Time)	51 mi (81 km) ESE from Main Shock.
Foreshock	M 2.8	18 hrs earlier Apr 30, 2024 07:26PM (Los Angeles Time)	0.5 mi (0.8 km) NE from Main Shock.
Foreshock	M 2.6	18 hrs earlier Apr 30, 2024 07:41PM (Los Angeles Time)	0.4 mi (0.7 km) ENE from Main Shock.
Main Shock This Earthquake	M 4.1	May 1, 2024 01:49PM (Los Angeles Time)	-
Aftershock	M 2.5	4 hrs later May 1, 2024 05:52PM (Los Angeles Time)	0.6 mi (0.9 km) E from Main Shock.

More earthquakes coming?

Earthquakes can create aftershocks. These are generally at least 1 magnitude lower than any main shock, and as time passes the chance and strength of aftershocks decreases.

The chance that a significant earthquake like this one is followed by an even larger earthquake is not so large. On average, scientists estimate a 94% chance that a major earthquake will not be followed by an even larger one. It is still adviced to be aware of this risk

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

Earthquakes like this happen often in the region

Earthquakes of this strength are very common in the region. This is the strongest earthquake to hit since April 18th, 2024, when a 4.3 magnitude earthquake hit 126 mi (203 km) further north-northwest. An even stronger magnitude 7.1 earthquake struck on July 6th, 2019.

In total, 150 earthquakes with a magnitude of 4.1 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 24 days.

Sources

Last updated 19/05/24 00:48 (). As more information on this earthquake becomes available this article will be updated. This article is automatically composed based on data originating from multiple sources.