Reviewed by USGSMexico108y ago
M6.1 earthquake 202 km SW of La Cruz de Loreto, Mexico
Wednesday, July 9, 1919, 19:19:51 UTC · 18.865°N, 106.957°W
A magnitude 6.1 earthquake struck 202 km SW of La Cruz de Loreto, Mexico on Wednesday, July 9, 1919, 19:19:51 UTC, at a depth of 10.0 km (shallow). It is the strongest earthquake within 300 km since an M6.4 on April 18, 1919.
- Magnitude
- 6.1
- Strong · mw
- Depth
- 10 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquake
In context
How big was it, and why here?
Energy released
21 kilotons of TNT
That is about the energy of the Hiroshima bomb. It released about 45 times the energy of a magnitude 5.0.
Tectonic setting
24 km
from the nearest mapped plate boundary, between the Rivera and Pacific plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
10 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 100 km
USGS has not published any M2.5+ earthquake within 100 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 4 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 5 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1900M7.3
Mexico
20 Jan 1900 · 241 km away · intensity VIII
Severe damage ($5–24M)tsunami
- 1875M7.4
Guadalajara, Mexico City
9 Mar 1875 · 255 km away
Moderate damage ($1–5M)tsunami
- 1900M6.9
Near Coast Of Jalisco
16 May 1900 · 241 km away
Limited damage (under $1M)tsunami
- 1837M7.5
Guadalajara
22 Nov 1837 · 241 km away
- 1875M6.5
S. Mexico
24 Feb 1875 · 241 km away · intensity VI
tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.