# Weak mag. 2.6 earthquake - Aserri, 19 km southwest of San Jose, San José, Costa Rica, on Sunday, Oct 24, 2021 1:49 am (GMT -6) - writeAge(1635061740)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 24 Oct 2021 07:49:00 UTC -
Local time at epicenter: Sunday, Oct 24, 2021 1:49 am (GMT -6)
Magnitude: 2.6
Depth: 6 km
Epicenter latitude / longitude: 9.775°N / 84.152°W (Aserri, Provincia de San José, Costa Rica)
Antipode latitude / longitude: 9.775°S / 95.848°E (Cocos (Keeling) Islands)
Primary data source: RSN
Show interactive Map
[smaller] [bigger]

## Quakes within 30 degrees from seismic antipode up to 3 days after the quake

The area around the antipode is marked with the big circle on the map.
The total number of quakes that occurred within 3 days around the antipode of the quake was 19. This is compared to the average number of 0.08 quakes during preceding intervals of 3 days with a standard deviation (σ) of 2.1, calculated by analzing all 100 preceding intervals of 3 days for the same region.
Interpretation:
Note: At a magnitude of 2.6, it is unlikely that this quake could affect areas around its antipode. If an increase or decrease of quake is detected, it is likely caused by other factors.
There is a weak increase in detected quakes around the antipode during the following 3 days.
 Mag class Total # Average σ Observed deviation 6+ 0 0 0 n/a 5+ 1 0 0.1 1 (7σ) 4+ 9 0 0.9 9 (9.9σ) 3+ 9 0.1 1.1 8.9 (8.3σ) Total 19 0.08 2.1 18.9 (9.2σ)
Explanation:
BLACK = Number of quakes within normal statistical range
RED = Significantly lower than normal number of quakes
GREEN = Significantly higher than normal number of quakes

## List of quakes

Filter by magnitude:
all
3.0+
4.0+
5.0+
Showing quakes magnitude 3.0 or higher (total: 19).
 Date and time MagDepth Location Details 24 Oct 2021 09:43:58 GMT(1 hour and 55 minutes after quake) 4.310 km South of Java, Indonesia [Show on map] More 24 Oct 2021 09:47:24 GMT(1 hour and 58 minutes after quake) 4.710 km 276km SSE of Portblair, Andaman And Nicobar Island, India [Show on map] More 24 Oct 2021 11:56:34 GMT(4 hours after quake) 3.871 km South of Java, Indonesia [Show on map] More 24 Oct 2021 14:11:26 GMT(6 hours after quake) 3.210 km Java, Indonesia [Show on map] More 24 Oct 2021 18:30:54 GMT(11 hours after quake) 3.130 km South of Bali, Indonesia [Show on map] More 25 Oct 2021 06:52:08 GMT(23 hours after quake) 5.144 km South of Java, Indonesia [Show on map] More 25 Oct 2021 10:43:10 GMT(1 day 3 hours after quake) 3.515 km Northern Sumatra, Indonesia [Show on map] More 25 Oct 2021 14:39:11 GMT(1 day 7 hours after quake) 4.610 km Indonesia: Off West Coast of Northern Sumatra [Show on map] More 25 Oct 2021 23:19:41 GMT(1 day 16 hours after quake) 3.210 km Java, Indonesia [Show on map] More 25 Oct 2021 23:31:39 GMT(1 day 16 hours after quake) 4.747 km Off West Coast of Northern Sumatra [Show on map] More 26 Oct 2021 10:02:29 GMT(2 days after quake) 4.118 km Northern Sumatra, Indonesia [Show on map] More 26 Oct 2021 10:22:05 GMT(2 days after quake) 4.4250 km Indonesia: Flores Sea [Show on map] More 26 Oct 2021 17:25:38 GMT(2 days after quake) 4.210 km Southern Sumatra, Indonesia [Show on map] More 26 Oct 2021 23:26:37 GMT(3 days after quake) 4.080 km India: Andaman Islands [Show on map] More 27 Oct 2021 00:34:58 GMT(3 days after quake) 3.310 km WESTERN AUSTRALIA [Show on map] More 27 Oct 2021 01:34:29 GMT(3 days after quake) 3.510 km Java, Indonesia [Show on map] More 27 Oct 2021 04:17:35 GMT(3 days after quake) 4.610 km Java, Indonesia [Show on map] More 27 Oct 2021 07:03:44 GMT(3 days after quake) 3.1113 km Sumbawa Region, Indonesia [Show on map] More 27 Oct 2021 07:44:03 GMT(3 days after quake) 3.1159 km Sumbawa Region, Indonesia [Show on map] More
Try our free app!
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
• Improved multilanguage support