The map shows quakes of M1.5 and up from the last 90 days, the 5 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, 0 earthquakes of M1.5 or bigger were recorded within 100 km of Prosser, the biggest of them M1.2. The biggest quake on record near Prosser — records go back to 1980 — was the M4.3 of Dec 02, 1987, 09:02 UTC: 3 km ENE of Cowiche, Washington.
Latest earthquakes near Prosser
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M0.3 | 17 km NW of Benton City, Washington | Oct 18, 2026, 06:34 PM | 17 km | 24 km NNE |
| M1.2 | 12 km NNE of Naches, Washington | Oct 05, 2026, 10:06 PM | 17 km | 97 km NW |
| M1.5 | 17 km SSE of White Swan, Washington | Aug 20, 2026, 04:38 AM | 6 km | 69 km W |
| M3.1 | 5 km WSW of Harrah, Washington | Aug 11, 2026, 09:23 AM | 12 km | 68 km WNW |
| M2.0 | 20 km SW of Desert Aire, Washington | Jun 29, 2026, 01:20 PM | 17 km | 44 km NNW |
| M1.8 | 3 km E of Lexington, Oregon | Jun 24, 2026, 11:43 AM | 9 km | 86 km S |
| M2.1 | 11 km NNE of Selah, Washington | Jan 27, 2026, 12:22 PM | 7 km | 81 km NW |
| M2.3 | 7 km N of Helix, Oregon | Dec 21, 2025, 10:34 PM | 20 km | 92 km ESE |
| M1.7 | 8 km N of Helix, Oregon | Dec 21, 2025, 10:29 PM | 19 km | 91 km ESE |
| M1.7 | 20 km S of White Swan, Washington | Nov 11, 2025, 03:32 PM | 7 km | 74 km W |
Earthquakes per year near Prosser (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 Prosser
Every quake of M1.5 or bigger within 100 km over the last year — 9 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 5 biggest earthquakes on record near Prosser (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.3 | 3 km ENE of Cowiche, Washington | Dec 02, 1987, 09:02 UTC | 87 km |
| M4.2 | 30 km S of White Swan, Washington | Jun 17, 2010, 14:23 UTC | 76 km |
| M4.1 | 2 km ENE of Cowiche, Washington | Dec 02, 1987, 07:12 UTC | 87 km |
| M4.0 | 20 km S of White Swan, Washington | Oct 09, 1998, 16:43 UTC | 72 km |
| M4.0 | 23 km SW of White Swan, Washington | Feb 02, 1981, 01:23 UTC | 94 km |
Nearby places
Grandview, WA (11 km) · Mabton, WA (18 km) · Benton City, WA (23 km) · Richland, WA (38 km) · Sunnyside, WA (23 km) · West Richland, WA (33 km)
USGS data fetched Nov 03, 2026, 16:45 UTC · page built Nov 03, 2026, 16:45 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.