Reviewed by USGSChina69y ago
M6.0 earthquake 50 km NW of Deyang, China
Friday, February 7, 1958, 23:23:37 UTC · 31.464°N, 104.014°E
A magnitude 6.0 earthquake struck 50 km NW of Deyang, China on Friday, February 7, 1958, 23:23:37 UTC, at a depth of 25.0 km (shallow). It is the strongest earthquake within 300 km since an M7.1 on April 14, 1955.
- Magnitude
- 6.0
- Moderate · mw
- Depth
- 25 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- VII
- Very strong (ShakeMap)
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeColoured lines: estimated shaking intensity (USGS ShakeMap)
In context
How big was it, and why here?
Energy released
14 kilotons of TNT
That is about the energy of the Hiroshima bomb. It released about 29 times the energy of a magnitude 5.0.
Tectonic setting
321 km
from the nearest mapped plate boundary, between the Eurasian and Yangtze plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
25 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 75 km
USGS has not published any M2.5+ earthquake within 75 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 15 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.4101 km WNW of Jiangyou, ChinaAugust 25, 1933 · 64 km NW of this epicenter
- 7.119 km WSW of Kangding, ChinaApril 14, 1955 · 273 km SW of this epicenter
- 6.5128 km NNW of Kangding, ChinaMay 29, 1919 · 233 km W of this epicenter
- 6.3eastern Sichuan, ChinaDecember 18, 1935 · 290 km S of this epicenter
- 6.129 km SE of Kangding, ChinaJune 25, 1952 · 257 km SW of this epicenter
- 6.1127 km WNW of Jiangyou, ChinaMarch 14, 1938 · 94 km NW of this epicenter
- 6.0eastern Sichuan, ChinaDecember 18, 1935 · 275 km S of this epicenter
- 5.9Western Sichuan, ChinaOctober 1, 1955 · 297 km SW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 29 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 38,643 recorded deaths. The most severe:
- 1879M8.0
Gansu Province
1 Jul 1879 · 204 km away · intensity XI
22,000 deathsExtreme damage ($25M+)
- 1933M7.4
Sichuan Province
25 Aug 1933 · 64 km away · intensity X
9,300 deathsExtreme damage ($25M+)
- 1923M7.3
Sichuan Province
24 Mar 1923 · 286 km away · intensity X
4,800 deathsSevere damage ($5–24M)
- 1881M6.5
Gansu Province
20 Jul 1881 · 244 km away · intensity VIII
480 deathsSevere damage ($5–24M)
- 1786M7.5
Sichuan Province: S Of Kangding
1 Jun 1786 · 260 km away · intensity IX
435 deathsSevere damage ($5–24M)
- 1904M6.0
Sichuan Province
30 Aug 1904 · 297 km away · intensity VIII
400 deathsModerate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.