The October 3, 1994 earthquake
M5.2near Ejido Doctor Alberto Oviedo Mota (El Indiviso), Mexico, Arizona
A magnitude 5.2 earthquake 6.2 miles deep, 30.6 miles off Yuma County. The 28th strongest in Arizona’s record since 1900, and the strongest within 50 miles since a magnitude 5.4 on February 6, 1987. 4 aftershocks of magnitude 2.5 or more followed within 30 days.
The earthquake
- Magnitude
- 5.2
- moment magnitude (mw)
- Depth
- 6.2 mi
- 10.0 km below the surface
- Local time
- Monday, October 3, 1994
- 07:00 MST; 14:00 UTC
- In Arizona’s record
- 28th
- strongest of 6,972 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event usp0006kc4 (“5 km NE of Ejido Doctor Alberto Oviedo Mota (El Indiviso), Mexico”). The USGS event page carries the ShakeMap, felt reports and the official summary.
Aftershocks
Earthquakes of magnitude 2.5 or more within 20 miles of the epicentre in the 30 days after.
4
Aftershocks in 30 days
3.8
Largest aftershock, Oct 7, 1994
0
On the first day
1
In the 7 days before
- The search radius is the surface rupture length expected for an earthquake of this magnitude (Wells and Coppersmith, 1994), at least 20 and at most 600 miles, so a great earthquake's sequence is counted along its whole fault.
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 · 30.6 mi
- Imperial CountyCA · 47.0 mi
Earthquakes around the epicentre
2,236 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
- November 20, 1915M6.6
- December 31, 1934M6.4
- October 15, 1979M6.4
- December 30, 1934M6.3
- June 8, 1980M6.3
- January 1, 1927M6.1
- January 1, 1927M6.0
- January 24, 1951M6.0
- November 30, 1958M5.8
- November 7, 1923M5.7
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.