Magnitude
M3.3
- Depth
- 27.0 km
- Source
- EMSC
Alajuela Province · Aguas Zarcas
Country overviewCosta Rica · Alajuela Province
M3.3 Earthquake near Aguas Zarcas, Alajuela Province (Costa Rica)
Map
About this earthquake
On September 21, 2026 at 00:36 UTC, a magnitude M3.3 earthquake occurred near Aguas Zarcas, Alajuela Province (Costa Rica). The hypocenter lay relatively close to the surface at around 27 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.
The event was recorded by EMSC. Costa Rica: 6 earthquakes were recorded in the past 24 hours, the strongest reaching M4.2.
Details
ID
c72019158787e78efe8dd45b0b8c1a6cdc080257
Magnitude
M3.3
Depth
27.0 km
UTC time
2026-09-21 00:36:08 UTC
Local time
—
Country
State
City
County
Village
Aguas Zarcas
Source
emsc
Coordinates
10.48690,
-84.38580
Temperature
25.1°C
Depth profile
Shallow
27 km
27 km — close to the regional average (25.8 km)
Regional average: 25.8 km
Why depth matters
Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.
Depth classes per USGS
Volcanoes nearby
-
Poas Activity reported
Radius · 50 km
Nearby infrastructure
Airports
- La Fortuna Arenal Airport21.2 kmStraight-line distance
Costa Rica · FON · MRAN
Source: OurAirports · Dataset date: 2026-09-21
This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates
Costa Rica
Context for this earthquake
21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 395 Catalogue entries
Of 394 other entries for this area and period, 191 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.
Open seismic profileHistoric earthquake map · Costa Rica
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Country statistics · Costa Rica
View earthquake KPIs, strongest and latest events, and averages for this country.
Stats (last 24h)
Global (24h)
597
Country (24h)
Costa Rica
6
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