Calamity
MediumLandslidesCS: 18 · v5

Landslides

USGS

Right now

The most recent data we hold from USGS arrived 5 hours ago, and this point is in it.

Nothing else has been detected within 20 km in the last 24 hours.

Reported by USGS today.

It is the only one we have recorded within 20 km of this point since 17 September 2026.

What the source measured

USGS reported: M6.5 earthquake near 165 km W of Nikolski, Alaska has triggered ground failure alerts. Landslide alert: yellow. Landslide probability: 10.0%. Depth: 111.7 km

How we know

One source: USGS. Not yet confirmed by a second, independent source.

Our own score for this event is 18 out of 100.

This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.

Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeLandslides
SeverityMedium
Calamity Score (ours)18 / 100
Legacy data-support index0.50/1
Coordinates52.7648, -171.2949
Nearest CityAnadyr (1474 km)
Urban exposure index (PEI)0 within 10 km
Impact Tierminor
Timestamp2026-09-17T14:19:53.164Z
Sourcehttps://earthquake.usgs.gov/earthquakes/eventpage/us7000ti1p

Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.

Source and revision timeline

Source: usgs_landslide. Occurrence: 2026-09-17T14:19:53.164Z.

First archived: 2026-09-18T00:56:41.138Z. Material modification: not recorded.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

Score Breakdown

40
intensity
0
Urban PEI term
0
Scenario weight
20
Recorded reference / batch anomaly

Technical Details

Magnitude6.5
Place165 km W of Nikolski, Alaska
DepthKm111.67
LandslideAlertyellow
LandslideProb0.1
LiquefactionProb0
QuakeIdus7000ti1p

Safety Information

Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

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