Earthquake · Reviewed by USGS

M3.5 earthquake 70 km NW of San Antonio, Puerto Rico

A magnitude 3.5 earthquake struck 70 km NW of San Antonio, Puerto Rico at Aug 9, 2026, 16:50 UTC, at a depth of 8 km. The epicentre was 72 km (45 mi) NW of Aguadilla.

Details

Magnitude	3.5 md
Time	Aug 9, 2026, 16:50 UTC
Depth	8.0 km
Coordinates	18.951, -67.563
Felt reports	0
Tsunami flag	None
Source	USGS event page

Fig. 1The epicentre and other earthquakes within 100 km, since the day before

01 — Nearby

Nearest cities

02 — Around it

Other earthquakes within 100 km

Other earthquakes within 100 km since the day before this event
Magnitude	Location	Distance	Depth	Time
3.2	57 km NW of San Antonio, Puerto Rico	15 km / 10 mi	depth 37 km	Oct 24, 21:07 UTC
3.2	77 km ENE of Punta Cana, Dominican Republic	23 km / 15 mi	depth 33 km	Oct 23, 00:13 UTC
2.9	25 km WNW of Puerto Real, Puerto Rico	90 km / 56 mi	depth 6 km	Oct 19, 04:57 UTC
3.4	67 km NNE of Punta Cana, Dominican Republic	75 km / 47 mi	depth 21 km	Oct 18, 18:28 UTC
3.4	65 km NE of Punta Cana, Dominican Republic	40 km / 25 mi	depth 10 km	Oct 15, 21:12 UTC
3.1	57 km NW of San Antonio, Puerto Rico	13 km / 8 mi	depth 16 km	Oct 14, 20:10 UTC
3.1	48 km N of Hatillo, Puerto Rico	79 km / 49 mi	depth 36 km	Oct 14, 18:02 UTC
2.8	11 km W of Mayagüez, Puerto Rico	92 km / 57 mi	depth 19 km	Oct 14, 08:10 UTC
2.8	7 km NNE of Isabela, Puerto Rico	73 km / 45 mi	depth 22 km	Oct 13, 23:29 UTC
3.4	54 km NNE of Otra Banda, Dominican Republic	99 km / 62 mi	depth 22 km	Oct 13, 11:41 UTC
2.7	6 km NE of Isabela, Puerto Rico	77 km / 48 mi	depth 17 km	Oct 13, 10:41 UTC
2.6	3 km W of Mayagüez, Puerto Rico	92 km / 57 mi	depth 63 km	Oct 12, 04:18 UTC
3.0	70 km NW of San Antonio, Puerto Rico	12 km / 8 mi	depth 22 km	Oct 11, 18:12 UTC
2.9	37 km NW of San Antonio, Puerto Rico	35 km / 22 mi	depth 26 km	Oct 11, 08:08 UTC
3.4	31 km NE of Punta Cana, Dominican Republic	67 km / 42 mi	depth 84 km	Oct 10, 16:32 UTC
3.0	63 km NW of San Antonio, Puerto Rico	12 km / 8 mi	depth 19 km	Oct 10, 08:52 UTC
3.6	51 km SE of Punta Cana, Dominican Republic	92 km / 57 mi	depth 61 km	Oct 8, 04:12 UTC
2.7	3 km SSW of La Playa, Puerto Rico	86 km / 54 mi	depth 88 km	Oct 7, 00:24 UTC
2.9	42 km NW of San Antonio, Puerto Rico	29 km / 18 mi	depth 13 km	Oct 5, 08:00 UTC
2.5	17 km NNE of Isabela, Puerto Rico	75 km / 46 mi	depth 21 km	Oct 5, 06:02 UTC
2.9	19 km NW of Rincón, Puerto Rico	58 km / 36 mi	depth 7 km	Oct 3, 13:33 UTC
3.9	19 km NW of Rincón, Puerto Rico	59 km / 36 mi	depth 6 km	Oct 3, 10:35 UTC
3.3	65 km NE of Punta Cana, Dominican Republic	37 km / 23 mi	depth 32 km	Oct 2, 13:29 UTC
3.0	68 km ENE of Punta Cana, Dominican Republic	30 km / 19 mi	depth 5 km	Oct 2, 12:07 UTC
3.1	66 km NE of Punta Cana, Dominican Republic	41 km / 25 mi	depth 8 km	Oct 2, 12:06 UTC

USGS can revise magnitude and location after the first report. See magnitude vs intensity and aftershocks.