Chi-Chi Taiwan 1999 (Kyoto)

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Event ID
199909201747
Event name
Chi-Chi
Country
Taiwan
Region in the country
Nantou, Taichung, Changhua, Taipei
World region
Asia
Epicentral coordinates (long/lat)
POINT(120.877 23.819)
WKT GIS format
GEMECD contributing partner
Kyoto
Event narrative

The 921 earthquake , also known as Chi-Chi earthquake , was a 7.3 ML or 7.6-7.7 Mw earthquake which occurred at 1:47:12 am local time on Tuesday, September 21, 1999 (17:47:12 UTC on September 20) in Chi-Chi, Nantou County, Taiwan. 2,465 people were killed, 11,305 injured, and more than NT$362 billion (US$11 billion) worth of damage was done. It was the second-deadliest quake in recorded history in Taiwan, after the 1935 Hsinchu-Taichung earthquake.

Date of occurrence (UTC)
1999-09-20
date
Time of occurrence (UTC)
17:47:12
time
Date of occurrence (local)
1999-09-21
date
Time of occurrence (local)
01:47:12
time
Day of the week (local)
Tuesday
Magnitude
7.7
Magnitude units
Moment (Mw)
Focal depth
21
km
Seismological data: source
USGS
Seismological data: comment

ShakeMap Atlas

Overview data
Loss: Human Casualty
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People injured
11305
number
People injured: source
National Fire Agency, Ministry of the Interior(Last updated at 2001 )

People seriously injured
725
number
People seriously injured: source
The 921 Earthquake Post-Disaster Recovery Commission(Last updated at 2000)
People seriously injured: comment

Definition of a serious injury is more than 30 days of hospitalization


People missing
29
number
People missing: source
National Fire Agency, Ministry of the Interior(Last updated at 2001 )
People missing: comment

Missing persons buried by landslides

People missing: status
Equivalent

People killed
2465
number
People killed: source
National Fire Agency, Ministry of the Interior(Last updated at 2001 )

People dying post catastrophe: status
N/A

People missing due to ground shaking: status
N/A

People killed due to ground shaking: status
N/A

People dying post catastrophe due to shaking: status
N/A

People missing due to tsunami
0
number
People killed due to tsunami
0
number
People missing due to fire following
0
number
People killed due to fire following
38
number
People killed due to fire following: source
Department of Health, Executive Yuan
People missing due to slope failures
29
number
People killed due to slope failures
78
number
Loss: Building damage
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Total number of buildings destroyed
38935
number
Total number of buildings destroyed: source
The 921 Earthquake Post-Disaster Recovery Commission
Total number of buildings destroyed: status
Equivalent

Number of buildings damaged
45320
number
Number of buildings damaged: source
The 921 Earthquake Post-Disaster Recovery Commission
Number of buildings damaged: status
Equivalent

Number of dwellings destroyed: status
N/A

Number of dwellings damaged: status
N/A

Total number of buildings destroyed by shaking: status
N/A

Number of buildings damaged by shaking: status
N/A

Number of dwellings destroyed by shaking: status
N/A

Number of dwellings damaged by shaking: status
N/A

Loss: Socioeconomic
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People homeless
106991
number
People homeless: source
Study on Urban Disaster Mitigation Planning Improvement Policy From 921 Ghi-Ghi Earthquake,Ming-Chin Ho., et al., Architecture and Building Research Institute, Ministry of The Interior, 1999
People homeless: comment

The results indicates the total number of people homeless in Taichung County and Nantou County in which the buildings were seriously damaged by earthquake.

People homeless: status
Greater than

Direct economic loss
8338
million US$
Direct economic loss: source
Directorate General of Budget, Accounting and Statics.(Data ended Feb 24, 2000 )
Direct economic loss: status
Approximate

Indirect economic loss
3054
million US$
Indirect economic loss: source
Directorate General of Budget, Accounting and Statics.(Data ended Oct 10, 1999)
Indirect economic loss: comment

Data indicated the revenues losses of agriculture, industries(including manufacturing,electricity,gas and water) and services.(Loss of GDP is not included)

Indirect economic loss: status
Approximate

Insured loss
750
million US$
Insured loss: source
Munich RE, Significant earthquakes worldwide 1980 – 2011
Insured loss: status
Approximate

People homeless due to shaking: status
N/A

Direct economic loss due to shaking: status
N/A

Indirect economic loss due to shaking: status
N/A

Demographics
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