The map shows quakes of M1.5 and up from the last 90 days, the 2 biggest on record, and always the very latest quake — even if it was smaller than M1.5. The list below can include smaller ones the map leaves out. Tap any dot for details.
In the last 30 days, 6 earthquakes of M1.5 or bigger were recorded within 100 km of San Marcos, the biggest of them M2.8. The biggest quake on record near San Marcos — records go back to 1980 — was the M4.6 of Jan 30, 2025, 03:26 UTC: 18 km ENE of Falls City, Texas.
Latest earthquakes near San Marcos
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M0.9 | 19 km S of Nixon, Texas | Oct 22, 2026, 09:23 AM | 9 km | 89 km S |
| M2.8 | 19 km S of Nixon, Texas | Oct 18, 2026, 02:12 PM | 7 km | 89 km S |
| M2.2 | 18 km S of Nixon, Texas | Oct 18, 2026, 12:55 AM | 8 km | 89 km S |
| M1.2 | 19 km S of Nixon, Texas | Oct 16, 2026, 04:54 AM | 9 km | 90 km S |
| M1.6 | 19 km S of Nixon, Texas | Oct 15, 2026, 09:24 PM | 8 km | 89 km S |
| M1.6 | 17 km S of Nixon, Texas | Oct 15, 2026, 07:13 PM | 9 km | 88 km S |
| M1.6 | 17 km S of Nixon, Texas | Oct 15, 2026, 07:08 PM | 8 km | 87 km S |
| M2.7 | 8 km ESE of Smiley, Texas | Oct 06, 2026, 07:25 AM | 7 km | 81 km SSE |
| M1.1 | 9 km ESE of Smiley, Texas | Oct 06, 2026, 07:24 AM | 9 km | 82 km SSE |
| M1.7 | 16 km SSW of Smiley, Texas | Sep 25, 2026, 11:57 AM | 8 km | 87 km SSE |
Earthquakes per year near San Marcos (M3.0 and up, within 100 km)
M3.0–3.9 M4.0+
Each bar is one year; taller means more quakes (M3.0 and up). The dark red part is the bigger ones (M4.0+), counted inside the number above each bar — not added on top. These may be felt, depending on how far away and how deep they are. 2026 is not a full year yet — it only counts up to today. Source: USGS Earthquake Catalog.
What the last year looked like near San Marcos
Every quake of M1.5 or bigger within 100 km over the last year — 101 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 2 biggest earthquakes on record near San Marcos (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.6 | 18 km ENE of Falls City, Texas | Jan 30, 2025, 03:26 UTC | 92 km |
| M4.1 | 16 km ENE of Falls City, Texas | Sep 14, 2023, 18:50 UTC | 93 km |
Nearby places
Martindale, TX (11 km) · Kyle, TX (13 km) · Uhland, TX (17 km) · New Braunfels, TX (27 km) · Schertz, TX (49 km) · Cibolo, TX (45 km)
USGS data fetched Nov 03, 2026, 17:45 UTC · page built Nov 03, 2026, 17:45 UTC. How to read this page: recent-window counts cover M1.5+ events within 100 km; the 10-year layer is based on M3.0+ and the history layer on M4.0+ since 1980. Recording completeness varies by era and region — small quakes from early decades are under-recorded, so “no record” does not prove “never happened”. Depths are relative to sea level and can be slightly negative for shallow events in elevated terrain. Method: data & methodology.