Every recorded earthquake within 30 km

Earthquakes near Río Blanco, PR

No earthquake was likely felt in Río Blanco in the 24 hours to 10:37 am AST (14:37 UTC). The last one was M 4.1, 56 km (35 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS.

M 3.2

Latest: 4:31 am AST on 4 September 2026 · 26 km (16 mi) ENE of Río Blanco, PR

The most recent earthquake of M2.5 or more near Río Blanco was M 3.2, 26 km (16 mi) ENE of Río Blanco, PR, at 4:31 am AST on 4 September 2026, 96 km deep. The estimated shaking in Río Blanco was intensity II (weak), felt by some people at rest indoors. 1 smaller earthquake has been recorded near Río Blanco since; the newest is first in the list below.

No earthquake of M1.5 or more was recorded within 30 km (19 mi) of Río Blanco in the last 24 hours.

Last 24 hours: 0
Last 7 days: 1
Last 30 days: 1 · an average 30 days here since 2016: 1.9
Last 12 months: 18 · largest M 3.2 on 4 September 2026
Since 2016: 246 earthquakes of M1.5 or more within 30 km
Largest since 2016: M 4.1 on 1 May 2019, 25 km (16 mi) S of Río Blanco, PR
Reported felt: 40 of them have felt reports to USGS

USGS · feed checked 9 seconds ago · newest earthquake in our database 4 minutes ago · this page 14:37 UTC · counts are earthquakes of M1.5 or more within 30 km (19 mi) of the town centre; shaking is estimated for the town centre with the intensity equation USGS Did You Feel It? uses

If you felt one

Was that an earthquake? — checks what was recorded near you in the last hour
Report what you felt to USGS — reports go to USGS, not to us, and they are what produces the intensity maps
Expect aftershocks, and be ready to Drop, Cover, and Hold On if you feel one; if you are in a damaged building, go outside and move away from it (Ready.gov, FEMA; what to do during and after an earthquake)
Near the coast, go inland or to higher ground as soon as strong shaking stops (Ready.gov); official warnings are on Tsunami.gov
Earthquakes in Puerto Rico — with the state's activity score

QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.

The last 30 days

Each mark is a day's largest quake within range; its size is the magnitude. The shaded band is the magnitude a day's largest quake normally falls in here (M2.2–M2.9), from this place's own 10-year record. A mark above the band is a bigger day than usual.

The latest 50

2.2 27 km (17 mi) S of Río Blanco, PR Nov 4, 2026
2:59 pm AST
3.2 26 km (16 mi) ENE of Río Blanco, PR Sep 4, 2026
4:31 am AST
3.1 16 km (10 mi) N of Río Blanco, PR Aug 31, 2026
2:53 am AST
2.1 19 km (12 mi) S of Río Blanco, PR Aug 20, 2026
8:43 pm AST
3.2 19 km (12 mi) SSE of Río Blanco, PR · felt by 2 Aug 8, 2026
5:45 am AST
2.1 13 km (8 mi) S of Río Blanco, PR Aug 7, 2026
11:59 pm AST
2.4 29 km (18 mi) ESE of Río Blanco, PR Jun 30, 2026
9:57 pm AST
2.1 28 km (18 mi) WSW of Río Blanco, PR Jun 11, 2026
11:51 am AST
2.6 30 km (19 mi) SE of Río Blanco, PR May 23, 2026
3:30 am AST
2.0 19 km (12 mi) SSE of Río Blanco, PR Mar 22, 2026
12:24 pm AST
2.3 21 km (13 mi) NW of Río Blanco, PR Mar 6, 2026
12:38 am AST
3.0 28 km (18 mi) SE of Río Blanco, PR Feb 6, 2026
4:32 am AST
3.1 16 km (10 mi) ESE of Río Blanco, PR Feb 1, 2026
5:15 am AST
2.6 18 km (11 mi) NW of Río Blanco, PR Jan 31, 2026
5:48 pm AST
1.9 21 km (13 mi) WSW of Río Blanco, PR Jan 28, 2026
1:39 am AST
2.7 19 km (12 mi) WSW of Río Blanco, PR Dec 31, 2025
11:42 am AST
2.1 18 km (11 mi) S of Río Blanco, PR Dec 7, 2025
10:24 pm AST
2.3 11 km (7 mi) SSW of Río Blanco, PR Nov 22, 2025
2:53 am AST
2.1 27 km (17 mi) SE of Río Blanco, PR Sep 14, 2025
7:32 am AST
3.3 29 km (18 mi) SE of Río Blanco, PR Sep 13, 2025
11:10 pm AST
2.7 19 km (12 mi) WSW of Río Blanco, PR · felt by 1 Aug 30, 2025
11:15 pm AST
1.8 25 km (15 mi) SW of Río Blanco, PR Aug 8, 2025
7:47 am AST
2.0 27 km (16 mi) WSW of Río Blanco, PR Jul 29, 2025
1:05 am AST
2.8 29 km (18 mi) SSE of Río Blanco, PR Jul 16, 2025
2:03 am AST
3.6 24 km (15 mi) NW of Río Blanco, PR Jun 5, 2025
3:26 am AST
1.7 30 km (19 mi) WSW of Río Blanco, PR May 21, 2025
6:13 am AST
2.5 13 km (8 mi) SSE of Río Blanco, PR May 8, 2025
1:39 am AST
2.1 13 km (8 mi) S of Río Blanco, PR May 4, 2025
1:35 pm AST
2.4 13 km (8 mi) SW of Río Blanco, PR Apr 16, 2025
6:59 am AST
3.1 19 km (12 mi) N of Río Blanco, PR · felt by 1 Apr 5, 2025
11:58 pm AST
3.4 8 km (5 mi) WNW of Río Blanco, PR Apr 3, 2025
5:00 pm AST
2.4 13 km (8 mi) SW of Río Blanco, PR Mar 19, 2025
2:08 am AST
2.2 13 km (8 mi) SW of Río Blanco, PR Mar 15, 2025
4:46 am AST
2.1 13 km (8 mi) SW of Río Blanco, PR Mar 15, 2025
4:41 am AST
2.6 12 km (7 mi) SW of Río Blanco, PR Mar 14, 2025
10:14 pm AST
2.1 13 km (8 mi) WSW of Río Blanco, PR Mar 13, 2025
12:51 pm AST
2.4 14 km (9 mi) SW of Río Blanco, PR Mar 13, 2025
5:20 am AST
2.5 27 km (17 mi) SE of Río Blanco, PR Feb 28, 2025
11:05 pm AST
2.1 9 km (5 mi) SW of Río Blanco, PR Dec 23, 2024
8:30 pm AST
2.8 14 km (9 mi) SW of Río Blanco, PR Dec 21, 2024
11:52 pm AST
2.5 23 km (14 mi) W of Río Blanco, PR Nov 24, 2024
10:59 am AST
3.5 19 km (12 mi) ESE of Río Blanco, PR · felt by 2 Nov 19, 2024
9:33 pm AST
3.2 14 km (9 mi) NNW of Río Blanco, PR Nov 16, 2024
5:28 am AST
2.4 30 km (18 mi) SSW of Río Blanco, PR Nov 14, 2024
1:42 pm AST
2.4 18 km (11 mi) SSE of Río Blanco, PR Oct 31, 2024
4:35 am AST
2.6 20 km (13 mi) SSW of Río Blanco, PR · felt by 2 Sep 18, 2024
7:32 am AST
2.8 12 km (8 mi) SSE of Río Blanco, PR Sep 8, 2024
2:26 pm AST
2.2 13 km (8 mi) SSE of Río Blanco, PR Sep 4, 2024
1:15 pm AST
3.3 12 km (7 mi) SSE of Río Blanco, PR · felt by 2 Sep 3, 2024
5:45 pm AST
3.0 13 km (8 mi) SSE of Río Blanco, PR Aug 25, 2024
8:18 pm AST

From the QuakeIndex database, which reads the USGS feed every 30 seconds and holds the USGS catalogue for the US from 2016 (M1.5+). Times are Río Blanco time. Distances are from the town centre. Quakes USGS named after Río Blanco are listed even when they are further out.

Show these earthquakes on your own site: a free card with the latest quakes near Río Blanco, for a local news site, school or neighborhood page.

On the map

Map loads when it scrolls into view

The white circle is Río Blanco; dots are the 50 most recent earthquakes within 30 km. Map © OpenStreetMap contributors.

Estimated shaking in Río Blanco

The strongest shaking in Río Blanco from a quake since 2016 is estimated at intensity III (weak), from the M 3.6 on 25 September 2022, 12 km away. Intensity II and III are felt by some people at rest indoors; IV by most people indoors; V and above wakes sleepers and moves objects.

Magnitude	When	Distance	Shaking in Río Blanco (est.)
M 3.6	Sep 25, 2022	12 km	III · Weak
M 3.6	Mar 16, 2024	11 km	III · Weak · felt by 57
M 3.7	Aug 21, 2022	11 km	III · Weak · felt by 3
M 4.1	May 1, 2019	25 km	III · Weak · felt by 350
M 3.3	Sep 3, 2024	12 km	III · Weak · felt by 2

An estimate for the town centre from magnitude, depth and distance, with the intensity equation USGS Did You Feel It? uses (Atkinson & Wald, 2007), on the Modified Mercalli scale. All 5 reach intensity II or more in town, where people at rest start to notice. Ground conditions change it street by street. It describes the past, not a hazard.

Before 2016

The USGS record since 1900 lists one earthquake of M5 or more within 50 km of Río Blanco:

5.1 3 km W of Aguas Buenas, Puerto Rico · 37 km W of Río Blanco 2010

USGS ComCat, M5+ from 1900 to 2015. This is the record, not a forecast.

Nearby towns

Humacao 9 km · Aguas Claras 15 km

Be ready

Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.

Ready.gov: earthquakes (FEMA) — what to do before, during and after, including Drop, Cover, and Hold On
Build a kit (FEMA) — water, food and supplies for several days; our summary
USGS: preparedness — the hazard behind the advice, from the agency that records every quake on this page
The Great ShakeOut — the yearly earthquake drill, with material for homes, schools and workplaces
Tsunami.gov (NOAA) — the official tsunami warnings for the coast; a quake page here never stands in for one