M 3.8 - 9 km W of Bennington, Idaho
Areazine synthesizes this USGS earthquake report directly from USGS's official public data feed. See our methodology for full source attribution and refresh cadence.
A magnitude 3.8 earthquake occurred 9 km west of Bennington, Idaho, on May 15, 2026, at 12:45 UTC.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on May 15, 2026 and geographically references Idaho. Its severity classification of "low" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Earthquakes - determines the monitoring protocol behind it, which shapes what follow-up action (checking for structural damage, watching for aftershocks, reviewing local building codes) is relevant and which agency holds authority over the assessment.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly USGS detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action, a single localized USGS earthquake report is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.
For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (earthquake, seismic, usgs, Idaho) map to related alerts in the same area of risk - browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.
What Happened
A magnitude 3.81 ml earthquake struck 9 km west of Bennington, Idaho, at 12:45:45 UTC on May 15, 2026 (Unix timestamp 1778843145180). The event was recorded at coordinates 42.3908°N, 111.4343°W with a depth of -3.1 km.
Location Details
The earthquake was centered 9 km (5.6 miles) west of Bennington, Idaho. The very shallow depth of -3.1 km places it in the shallow category (< 20 km).
Impact Assessment
The earthquake was felt by 3 people, with a maximum reported intensity (CDI) of 4.2 and instrumental intensity (MMI) of 3.9. No tsunami was generated (tsunami advisory status: 0). No alert level was issued.
What You Should Know
Earthquakes of this magnitude (M 2.5–3.9) are often felt but rarely cause damage. Minor aftershocks remain possible in the hours and days following the event. Residents should follow standard earthquake safety practices, such as securing heavy objects and knowing how to drop, cover, and hold on.
Source
Original source: USGS Official Notice ↗
Related Earthquakes
All Earthquakes →Frequently Asked Questions
Common questions about this USGS earthquake report.