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M3.3 Earthquake — 15 km N of Summit Park, Utah

M3.3
40.8847°N, 111.6070°W·US-UT
Started 3h ago
USGS data as of
Event Details
Typeearthquake
SeverityM3.3
Statusactive
Location40.8847°N, 111.6070°W (UT)
Started2026-10-21T21:05:50.06+00:00
Last Updated2026-10-21T21:25:33.544+00:00
Sourceusgs
Source URLearthquake.usgs.gov
Confidence1.00
Impact Zones — modeled
Affected Zone
Shaking felt. Minor damage possible in vulnerable structures.
17.2 km

Zone estimates are based on scientific models and may differ from actual local conditions.

Impact Analysis
Population Exposed9,666
Structures in Zone375
Schools4
Fire Stations2

Population from ACS 5-Year 2022 tract sampling; structure counts from Microsoft Building Footprints or Census ACS housing data, capped by USGS NLCD 2021 developed land. Estimates for situational awareness — not for actuarial, regulatory, or underwriting use.

Historical Comparison
2020 UT Earthquake55% match

M4.01 Earthquake in UT, 43km from current event

UT
2020 UT Earthquake49% match

M4.17 Earthquake in UT, 41km from current event

UT
2020 UT Earthquake48% match

M4.19 Earthquake in UT, 42km from current event

UT

Historical comparison based on peril type, geography, and severity. Past events do not predict future outcomes.

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Related
Morgan County, UT disaster historyAll US hazard profilesScoring methodology

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Zone estimates are based on scientific models and may differ from actual local conditions.