# Moderate mag. 4.5 earthquake - Flores Sea, 35 km northwest of Sumbawa Besar, Indonesia, on Thursday, Sep 16, 2021 3:00 am (GMT +8) - writeAge(1631732444)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 15 Sep 2021 19:00:44 UTC -
Local time at epicenter: Thursday, Sep 16, 2021 3:00 am (GMT +8)
Magnitude: 4.5
Depth: 10 km
Epicenter latitude / longitude: 8.26°S / 117.2°E (Flores Sea, Indonesia)
Antipode latitude / longitude: 8.26°N / 62.8°W (Venezuela)
Primary data source: BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)
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## 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 32. This is compared to the average number of 45.18 quakes during preceding intervals of 3 days with a standard deviation (σ) of 24.4, calculated by analzing all 100 preceding intervals of 3 days for the same region.
Interpretation:
Note: At a magnitude of 4.5, 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 no significant variation in the number of quakes that occurred around the antipode within 3 days.
 Mag class Total # Average σ Observed deviation 6+ 0 0.1 0.2 -0.1 (-0.2σ) 5+ 1 0.8 1.3 0.2 (0.1σ) 4+ 5 8.3 5.8 -3.3 (-0.6σ) 3+ 26 36 19 -10 (-0.5σ) Total 32 45.18 24.4 -13.2 (-0.5σ)
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:
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5.0+
Showing quakes magnitude 3.0 or higher (total: 32).
 Date and time MagDepth Location Details 15 Sep 2021 20:42:30 GMT(1 hour and 42 minutes after quake) 3.919 km PANAMA-COSTA RICA BORDER REGION [Show on map] More 16 Sep 2021 05:13:59 GMT(10 hours after quake) 3.918 km CENTRAL PERU [Show on map] More 16 Sep 2021 06:28:00 GMT(11 hours after quake) 3.757 km Costa Rica: 6 Km Al Este De Curubande, Liberia. [Show on map] More 16 Sep 2021 06:48:25 GMT(12 hours after quake) 3.00 km Guyana [Show on map] More 16 Sep 2021 08:51:41 GMT(14 hours after quake) 3.414 km 60 Km Al Sur De La Libertad, El Salvador [Show on map] More 16 Sep 2021 09:23:20 GMT(14 hours after quake) 3.28 km NEAR COAST OF NICARAGUA [Show on map] More 16 Sep 2021 09:51:18 GMT(15 hours after quake) 3.010 km PANAMA-COSTA RICA BORDER REGION [Show on map] More 16 Sep 2021 10:14:00 GMT(15 hours after quake) 4.228 km PERU-ECUADOR BORDER REGION [Show on map] More 16 Sep 2021 12:06:50 GMT(17 hours after quake) 4.525 km Peru-Ecuador Border Region, A 20.25 Km De Zarumilla [Show on map] More 16 Sep 2021 12:37:56 GMT(18 hours after quake) 3.714 km SOUTHERN PERU [Show on map] More 16 Sep 2021 18:58:24 GMT(24 hours after quake) 4.150 km OFF COAST OF NORTHERN PERU [Show on map] More 16 Sep 2021 21:47:34 GMT(1 day 3 hours after quake) 3.25 km 26 Km Al Norte De Tres De Junio, Costa Rica [Show on map] More 17 Sep 2021 00:12:20 GMT(1 day 5 hours after quake) 3.618 km Colombia: 165 Km Al Sureste De La Palma, Panamá [Show on map] More 17 Sep 2021 02:55:35 GMT(1 day 8 hours after quake) 4.026 km Colombia: 164 Km Al Sureste De La Palma, Panamá [Show on map] More 17 Sep 2021 07:56:31 GMT(1 day 13 hours after quake) 3.410 km HAITI REGION [Show on map] More 17 Sep 2021 10:07:51 GMT(1 day 15 hours after quake) 3.510 km HAITI REGION [Show on map] More 17 Sep 2021 10:10:37 GMT(1 day 15 hours after quake) 3.322 km 12 Km Al Suroeste De Puerto Quepos, Costa Rica [Show on map] More 17 Sep 2021 10:20:41 GMT(1 day 15 hours after quake) 3.410 km HAITI REGION [Show on map] More 17 Sep 2021 11:05:00 GMT(1 day 16 hours after quake) 3.83 km Costa Rica: 98 Km Al Oeste De San Juan Del Sur, Nicaragua. [Show on map] More 17 Sep 2021 11:05:37 GMT(1 day 16 hours after quake) 3.210 km 69 Km Al Noroeste De Rosario, Costa Rica [Show on map] More 17 Sep 2021 20:35:37 GMT(2 days after quake) 3.56 km NICARAGUA [Show on map] More 17 Sep 2021 20:39:00 GMT(2 days after quake) 3.35 km Venezuela: 17 Km Al Noreste De Aguasay [Show on map] More 17 Sep 2021 21:35:01 GMT(2 days after quake) 3.426 km NEAR COAST OF NICARAGUA [Show on map] More 17 Sep 2021 22:26:35 GMT(2 days after quake) 4.030 km PERU-ECUADOR BORDER REGION [Show on map] More 18 Sep 2021 02:30:59 GMT(2 days after quake) 3.412 km 22 Km NNE of Isabela, Puerto Rico [Show on map] More 18 Sep 2021 03:39:26 GMT(2 days after quake) 3.610 km SOUTHERN PERU [Show on map] More 18 Sep 2021 06:25:32 GMT(2 days after quake) 3.926 km SOUTHERN PERU [Show on map] More 18 Sep 2021 09:09:05 GMT(3 days after quake) 3.55 km Ecuador - Morona Santiago, A 20.5 Km De Macas [Show on map] More 18 Sep 2021 12:13:27 GMT(3 days after quake) 3.128 km 35 Km Al Sur De Delta Del Rio Lempa, El Salvador [Show on map] More 18 Sep 2021 14:43:55 GMT(3 days after quake) 5.062 km El Salvador [Show on map] More 18 Sep 2021 15:04:26 GMT(3 days after quake) 3.213 km DOMINICAN REPUBLIC REGION [Show on map] More 18 Sep 2021 15:24:00 GMT(3 days after quake) 3.24 km Costa Rica: 10 Km Al Noroeste De Rivas De Perez Zeledon. [Show on map] More
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