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Moderate mag. 5.9 earthquake - 15km E of Chabu, China on Sunday, 21 July 2013

Moderate mag. 5.9 earthquake - 13km E of Chabu, China on Sunday, 21 July 2013

Moderate mag. 5.9 earthquake  - 13km E of Chabu, China on Sunday, 21 July 2013
22 Jul 00:05 UTC: First to report: USGS after 19 minutes.
Date & time: Sunday, 21 July 2013 23:45 UTC
Local time at epicenter: Monday, July 22, 2013 07:45:56
Magnitude: 5.9
Depth: 9.8 km
Epicenter latitude / longitude: 34.4991°N / 104.2427°E (China)
Nearby towns and cities:
138 km (86 mi) W of Tianshui (pop: 3,500,000)
151 km (94 mi) W of Beidao (pop: 74,800)
155 km (96 mi) SE of Linxia Chengguanzhen (pop: 202,400)
177 km (110 mi) SE of Lanzhou (pop: 2,628,400)
Primary data source: USGS
Estimated released energy: 4.5 x 1013 joules (12.4 gigawatt hours, equivalent to 10676 tons of TNT or 0.7 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
TimeMag. / DepthLocationSource
Sun, 21 Jul 23:45 UTCM 6.0 / 10 kmGansu, ChinaGFZ
Sun, 21 Jul 23:45 UTCM 6.0 / 10 kmGANSU, CHINAEMSC
Monday, July 22, 2013 07:45:56 (21 Jul 23:45:56 UTC)M 5.9 / 9.8 km13km E of Chabu, ChinaUSGS
Sun, 21 Jul 23:45 UTCM 5.9 / 10 kmE of Chabu, ChinaGeoAu

shake map
(shakemap: USGS)

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Chengdu / Light shaking (MMI IV)
Xi'an (China, 433 km E of epicenter) : My first Earthquake was that one on the American East Coast a year or two back. By the time I realized what it was, it was almost over. This one seemed weaker, but it I knew what it was immediately, so it caused me a lot more anxiety as I waited the thing out.Not sure if it was useful, but I wanted to say that. (reported through EMSC)
Lanzhou (China, 175 km NW of epicenter) : I lived in Tokyo during the March 2011 Tohoku earthquake so was quite worried at the first shaking but it was over quickly. This felt like a gentle swaying compared to the jerkiness of other earthquakes I've experienced. I have not liver here long and not made my earthquake kit yet - a good reminder to get it done. (reported through EMSC)

Aftershocks of the 5.9 quake: 13km E of Chabu, China, 21 Jul 2013 23:45

More info
Recorded aftershocks, latest first (3 quakes):
  • 28 Jul 2013 15:26 UTC
    | M 4.6 |
    15 km (9.3 mi) depth
    5 km (3 mi) distance
    | USGS | Details
  • 22 Jul 2013 01:12 UTC
    | M 5.6 |
    10.1 km (6.3 mi) depth
    13 km (8 mi) distance
    | USGS | Details
  • 22 Jul 2013 00:09 UTC
    | M 4.7 |
    9.4 km (5.8 mi) depth
    28 km (17 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Moderate mag. 5.9 earthquake - 13km E of Chabu, China on Sunday, 21 July 2013

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