The January 24, 1951 earthquake

M6.0near Tecolots, B.C., MX, Arizona

A magnitude 6.0 earthquake 3.7 miles deep, 18.1 miles off Yuma County. The 10th strongest in Arizona’s record since 1900, and the strongest within 50 miles since a magnitude 6.6 on October 21, 1942.

The earthquake

Magnitude: 6.0; local magnitude (ml)
Depth: 3.7 mi; 6.0 km below the surface
Local time: Wednesday, January 24, 1951; 00:16 MST; 07:16 UTC
Epicentre: 32.62°N, 115.12°W; 18.1 mi from Yuma County
In Arizona’s record: 10th; strongest of 6,972 since 1900
Within 50 miles: 3; counties; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event ci3322622 (“14km WNW of Tecolots, B.C., MX”). The USGS event page carries the ShakeMap, felt reports and the official summary.

Counties and cities within 50 miles

Distance from the epicentre to each county boundary (zero when inside) and to each city centre.

Counties

Yuma CountyAZ · 18.1 mi
Imperial CountyCA · 24.2 mi
La Paz CountyAZ · 38.8 mi

Cities, largest first

YumaAZ · 35.5 mi
El CentroCA · 28.0 mi
San LuisAZ · 25.0 mi
CalexicoCA · 22.3 mi
BrawleyCA · 34.2 mi
ImperialCA · 30.3 mi
SomertonAZ · 24.6 mi

Earthquakes around the epicentre

3,959 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.

Earlier earthquakes of magnitude 5 or more within 50 miles, strongest first

USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.