Earthquake Yunnan, China - at least 6 people injured + approx. 10,500 houses damaged + damage estimate : 33.34 million US$

Earthquake overview : Dangerous shallow earthquake in an unstable area who had a lot of misery caused by earthquakes since the end of last year. Earthquake's epicenter is close to Shangyingxiang.
We ask people who have felt this earthquake to share their information with our many readers (also from your area). Please use the "I Have Felt it" form below.

Yunnan earthquake rescue activities August 09 2011 - image courtesy and copyright

UPDATE 10/08-19:47 : Unfortunately some numbers have been increased since our latest update :
* 94,800 people have been affected (increased from 60,949 in our latest update)
581 people have been evacuated (increased from 210 in our latest update) 210 people have been evacuated
- 2 million CNY has been budgeted for Relief actions (311,000 US$)

6 injured (2 seriously, 4 lightly) from Yunnan Seismological Bureau (as of 11:00am LT).
* With the increase in damage to other components, our damage estimate is up to 214 million CNY ($33.34 million USD).
* 60,949 people have been affected, with 31,464 rooms damaged (around 10,500 houses).
* Primary and secondary schools, township hospitals, villages, water supply components, bridges and roads have also damaged to varying degrees.
* 210 people have been evacuated (in comparison to the earlier total).
* 288 tents and 400 quilts have been distributed, which makes the 210 people reported, seem too small (ER: We prefer the aforementioned value of around 441 people evacuated).

IMPORTANT UPDATE 10/08-02:44 UTC : With the new light in Tengchong County which we have been waiting for, the destruction has become apparent with over 30 towns and villages affected totalling 10474 households with around 44341 people affected.
3 people were injured (1 severe, 2 light)
441 people have been evacuated from their homes (200 coats and quilts have been distributed so far).
22823 rooms have been damaged to some degree (this generally means around 8000 houses have been affected).
The pricetag will be around 9.5 million USD according to CATDAT.
Earthquake has been labelled "CATDAT ORANGE".

Historic CATDAT data for this area
The most notable include the Yingjiang earthquakes earlier this year...
1976 earthquakes struck around the same area, killing 109 people over many shocks in a 2 month period.
1961, a 5.8Ml earthquake struck at the same epicenter, killing 6, injuring 68 and damaging over 10000 rooms.
Back in 1512, an earthquake killed many many people near Tengchong with a predicted 6.8 magnitude.

UPDATE 17:26 UTC : The Yunnan Civil Affairs Department has dispatched 200 tents, 200 blankets and 200 coats to the epicenter area.

UPDATE 16:28 UTC : As usual the reporting after the earthquake is a bit chaotic and like everywhere else in the world many departments are working together to retrieve details.  Overview of what we currently are retrieving from the different specialized sources in China :  revision of injured people to 3  (from 8).
A number of public houses have collapsed and there is also minor damage like fallen tiles to many of the houses.

Typical landscape in Yunnan epicenter area - Panoramio image courtesy 西北风 - 西北风

UPDATE 16:03 UTC : Mainshock and aftershocks so far :
2011-08-09 22:03:39    M 2.5
2011-08-09 21:21:37    M 3
2011-08-09 20:18:20    M 3.1
2011-08-09 19:57:54    M 2.8
2011-08-09 19:57:44    M 2.9
2011-08-09 19:50:16    M 5.2

UPDATE 15:42 UTC : The number of injured has gone up from 4 to 8.

UPDATE 15:25 UTC : At least 7 houses were damaged in various degrees.

UPDATE 15:21 UTC : More than 30 teams have been send to the epicenter area where they will assess the situation and help the people with first aid and emergency relief goods if needed.

UPDATE 15:11 UTC : 1 hour 31 minutes after the mainshock a second aftershock measuring 3.0 struck the same area.

IMPORTANT UPDATE 13:21 UTC : At the time of reporting,  4 people have been treated for minor injuries when their house collapsed. Additionally a lot of houses have cracks in the walls.  Electrical power is still OK

UPDATE 13:18 UTC : The epicenter is below Tengchong Mangbang Township. The area has a relatively sparse population.

UPDATE 13:12 UTC : Chinese sources are mentioning the epicenter in Tenchong County, Yunnan, Longyang.

UPDATE 13:08 UTC : Chinese SAR (Search and Rescue) forces are among the best organized and trained in the world. As it is currently after dark in China, it will take 1 to 3 hours before the first reports from the SAR forces will be published.

UPDATE 13:04 UTC : Since we started this site in August 2010, we have (unfortunately) been writing a lot about Yunnan earthquakes, even one with a deadly outcome. Here are the links to some of our articles. You will immediately see that the magnitudes are sometimes limited, but the damage unevenly big.
* Earthquake Tengchong, Yunnan, China : 2,079 households affected and 6 people injured (3 seriously) (June 20 2011)
* Deaths and injuries from very dangerous earthquake in Yingjiang, Yunnan, China (March 10 2011)
* Very dangerous earthquake below the China / Myanmar border area (February 1 2011)
* Very damaging earthquake “ 8,017 homes on the Myanmar / China border (January 1 2011)
* China “ Magnitude 5.0 earthquake injures 14 people and damages 7,354 houses (August 29 2010)

UPDATE 12:49 UTC : An aftershock of M 3.1 at a depth of 11 km has occurred 28 minutes after the mainshock.

UPDATE 12:48 UTC : The Chinese values which we trust a lot, are reinforcing the dangerous aspect of this earthquake.

UPDATE 12:38 UTC : As the USGS data we have published has been measured a huge distance from China, we always want to give the data of the other seismological agencies as the real values are of an extreme importance for these kind of earthquakes.
GFZ : 5.1 @ a depth of 10 km
EMSC : 5.0 @ 10 km
Chinese seismological agency 5.2 @ 11 km

Dangerous shallow earthquake in an unstable area who had a lot of misery caused by earthquakes since the end of last year. Earthquake's epicenter is close to Shangyingxiang and Zhubapu.
Due to the specific terrain in the area, even moderate earthquakes like this one are creating a lot of damage and even injured people.

"I Have Felt It" reports
MMI values (if indicated) after the text (III: Weak shaking, IV Light shaking, V Moderate shaking, VI Strong shaking, VII Very Strong shaking)
China, Yunnan Province, Luxi City (Mang Shi) - (ER: Luxi city is about 60 km from the epicenter) : About 7:55pm, 2011/08/09 local time. Felt computer table start shaking, followed by building moving. Was first experience in an earthquake; my roommates and I left the building, but no further tremors felt. Roommates heard doors shaking, and they wondered what I was doing; when I felt table shaking, I thought they were banging on wall. Obviously, it wasn't very strong. Friend in a higher apartment building said it shook considerably. No panic among local people, though. - IV MMI

Most important Earthquake Data:
Magnitude : 5.0 (USGS)
UTC Time : Tuesday, August 09, 2011 at 11:50:20 UTC
Local time at epicenter : Tuesday, August 09, 2011 at 07:50:20 PM at epicenter
Depth (Hypocenter) : 24.7 km (15.3 miles)
Geo-location(s) :
Approx. 30 km from Tengchong, Yunnan, China
Approx. 60 km from Dehong, Yunnan, China
139 km (86 miles) ESE (110°) from Myitkyina, Myanmar

Links to important maps
Google satellite map of the area showing the kind of terrain the earthquake took place
3-dimensional view of the earthquake area (USGS epicenter location)
historic earthquakes map
Seismic hazard map

QuakeSOS+ and QuakeSOS free are iPhone applications developed by Armand Vervaeck, the founder of Earthquake Report. The Application simplifies immediate group communication to friends and family members (with your exact GPS location) and is feeding the users with Earthquake Report news. The 0.99 US$ QuakeSOS+ version will support the activities of SOS Earthquakes.

a headlines on twitter
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I did feel it – Ik heb het gevoeld – Το έκανα αισθάνεται – Yo lo siento – 我的确感到了 – 私はそれを感じていました- Ich habe es gefühlt – Bunu hissediyorum yaptı – لم أشعر أنه


  1. Jaguva Ekanath says

    I felt to day the tremor of earthquake in Tiruchirappalli, Tamil Nadu, India at 12 to 12.15 p.m. I understood that was at the magnitude of 3.5 from TV news.

    Let the god save the mother earth and all my brothers and sisters from earthquake, Tsunami and other natural calamities.
    Yours lovingly,
    Jaguva Ekanath