Fault · Colorado
Northern Sangre de Cristo fault
In plain English
The two sides move less than 0.2 mm a year — under 2 cm a century. Slow faults can still produce large earthquakes, just rarely.
Its most recent surface rupture is younger than 15,000 years.
USGS maps it as 4 sections: Blanca section, Crestone section, San Luis section, Zapata section.
This week vs. its last ten years
Too quiet to rank: fewer than half a year's worth of weeks with any M1.5+ quake within 5 km, in ten years. A single quake here would read as "unusual", so we do not score it.
Computed from the USGS catalogue · a description of the past, not a forecast · method
Every year since 2016
Earthquakes of M2.5+ with an epicentre within 10 km of the mapped trace. Near is not the same as on: some will have slipped on neighbouring faults.
Most recent near it
- M 2.8 24 km N of Blanca, Colorado
2019-07-24 · 4 km from the trace - M 3.3 22 km N of Blanca, Colorado
2019-02-28 · 5 km from the trace - M 3.4 22 km NNW of Blanca, Colorado
2019-02-28 · 1 km from the trace - M 2.5 26 km N of Blanca, Colorado
2018-11-22 · 4 km from the trace - M 2.5 25 km N of Blanca, Colorado
2018-11-22 · 5 km from the trace
Neighbouring faults
- Villa Grove fault 6 km away
- Southern Sangre de Cristo fault 10 km away
Fault trace, slip rate and age: USGS Quaternary Fault and Fold Database (public domain), simplified for the web. Earthquakes: USGS ComCat. QuakeIndex does not forecast earthquakes; a fault's history describes the past. For early warning use ShakeAlert.