Data last collected:
QuakeFactsEvidence report · prepared 25 October 2026https://quakes99.com/entity/nc72672610
USGS nc72672610
10 Aug 2016, 03:57
20 km NNE of Upper Lake, California
A magnitude 5.1 mw earthquake at 14.5 km depth.
Published location
Where is 20 km NNE of Upper Lake, California?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
39.329333, -122.801833
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
nc72672610
Coordinates
39.3293333, -122.8018333
Network
nc
Significance
859
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right 20 km NNE of Upper Lake, California earthquake: magnitude 5.1 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at 20 km NNE of Upper Lake, California
Depth in another unit
The recorded event depth of 14.5 km is approximately 9.01 miles below the source reference surface. Depth alone does not describe damage or local hazard.
Interpreting the recorded coordinates
The published position for 20 km NNE of Upper Lake, California is 39.3293° north and 122.8018° west. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.