PAGER - M 6.6 - OFFSHORE BIO-BIO, CHILE

Alert level does not include impacts from earthquake-related hazards such as tsunamis, landslides, fires or liquefaction.

Earthquake Shaking Alert Level: YELLOW

Download Alert PDF What's this?Friday, March 5th, 2010 at 11:47:10 UTC (07:47:10 local)Location: 36.5° S, 73.1° WDepth: 35kmEvent Id: US2010TLA4Alert Version: 1Created: 29 weeks, 0 days after earthquake.

Alert Information

Yellow alert for shaking-related fatalities and economic losses. Some casualties and damage are possible and the impact should be relatively localized. Past yellow alerts have required a local or regional level response. Estimated economic losses are less than 1% of GDP of Chile.

Estimated Fatalities

ESTIMATED FATALITY ALERT: YELLOW
ESTIMATED FATALITIES (LEVEL)	Probability (%)
0 (GREEN)	4
1 to 9 (YELLOW)	27
10 to 99 (YELLOW)	47
100 to 999 (ORANGE)	20
1 to 10 thousand (RED)	2
10 to 100 thousand (RED)	0
100 thousand + (RED)	0

Estimated Economic Losses

ESTIMATED ECONOMIC ALERT: YELLOW
ESTIMATED VALUE IN USD (LEVEL)	Probability (%)
0 to 1 million (GREEN)	1
1 to 10 million (YELLOW)	13
10 to 100 million (YELLOW)	47
100 million to 1 billion (ORANGE)	34
1 to 10 billion (RED)	5
10 to 100 billion (RED)	0
100 billion + (RED)	0

Detailed Information

Estimated Population Exposed to Earthquake Shaking
Estimated Modified Mercalli Intensity		I	II-III	IV	V	VI	VII	VIII	IX	X
Est. Population Exposure		---*	1,102k*	1,216k	760k	274k	802k	0	0	0
Perceived Shaking		Not Felt	Weak	Light	Moderate	Strong	Very Strong	Severe	Violent	Extreme
Potential Structure Damage	Resistant	none	none	none	V. Light	Light	Moderate	Moderate/Heavy	Heavy	V. Heavy
Potential Structure Damage	Vulnerable	none	none	none	Light	Moderate	Moderate/Heavy	Heavy	V. Heavy	V. Heavy

*Estimated exposure only includes population within calculated shake map area

Population Exposure
Population per ~1 sq. km. from LandScan

Structure Information Summary

Overall, the population in this region resides in structures that are resistant to earthquake shaking, though some vulnerable structures exist. The predominant vulnerable building types are low-rise reinforced/confined masonry and adobe block construction.

Historical Earthquakes (with MMI)

Date (UTC)	Dist (km)	Mag	Max MMI (#)	Shaking Deaths
1985-03-03	395	7.9	VII (5m)	177
1985-03-04	399	5.5	VII (342k)	0
2004-05-03	138	6.6	IX (23k)	0

Recent earthquakes in this area have caused secondary hazards such as landslides and liquefaction that might have contributed to losses.

Selected Cities Exposedfrom GeoNames Database of Cities with 1,000 or more residents.

MMI	City	Population
VII	Talcahuano	253k
VII	Penco	46k
VII	Concepcion	215k
VII	Tome	47k
VI	Chiguayante	83k
VI	Lota	50k
V	Chillan	150k
IV	Los Angeles	125k
IV	Talca	197k
III	Temuco	238k
III	Rancagua	213k

(k = x1,000)

Nearby Events in the EXPO-CAT Earthquake Catalog
#	Date/Time	Mag	Lat, Lon, Depth	Country	Max MMI (Exposed)	Deaths		Secondary Effects
#	Date/Time	Mag	Lat, Lon, Depth	Country	Max MMI (Exposed)	Shaking	Total	Secondary Effects
1	1973-07-31 05:41 UTC	5.5	37.72° S, 73.43° W 29km	CL	VII (34 k)	0	0
2	1973-10-05 05:47 UTC	6.7	33.07° S, 71.94° W 30km	CL	VIII (2 k)	0	0
3	1974-08-18 10:44 UTC	7.1	38.43° S, 73.46° W 9km	CL	IX (9 k)	0	0
4	1975-05-10 14:27 UTC	7.8	38.21° S, 73° W 30km	CL	VIII (69 k)	0	0
5	1975-05-28 13:57 UTC	5.8	37.97° S, 73.43° W 23km	CL	VIII (3 k)	0	0
6	1979-04-26 02:00 UTC	5.9	33.91° S, 72.05° W 26km	CL	VII (8 k)	0	0
7	1981-03-23 19:28 UTC	6.4	33.66° S, 71.97° W 22km	CL	VII (623)	0	0
8	1981-10-16 03:25 UTC	7.1	33.2° S, 73.05° W 32km	CL	VI (29 k)	0	1
9	1985-03-03 22:46 UTC	7.9	33.17° S, 71.87° W 31km	CL	VIII (301 k)	0	177	tsunami
10	1985-03-03 22:47 UTC	7.9	33.14° S, 71.76° W 35km	CL	VII (5,433 k)	177	177	liquefaction, tsunami
11	1985-03-04 00:27 UTC	5.5	33.14° S, 71.63° W 29km	CL	VII (342 k)	0	0
12	1985-03-04 00:32 UTC	7.4	33.24° S, 71.74° W 40km	CL	VIII (131)	0	0
13	1985-03-04 03:17 UTC	6.2	34.16° S, 72.06° W 44km	CL	VII (19 k)	0	0
14	1985-03-04 06:06 UTC	6.3	33.91° S, 72.06° W 24km	CL	VIII (69)	0	0
15	1985-03-04 06:17 UTC	6.3	33.13° S, 71.92° W 25km	CL	VIII (66)	0	0
16	1985-03-04 13:49 UTC	5.7	33.92° S, 72.22° W 35km	CL	VI (6 k)	0	0
17	1985-03-09 15:11 UTC	5.8	33.69° S, 72.27° W 28km	CL	VI (2 k)	0	0
18	1985-03-19 04:01 UTC	6.6	33.23° S, 71.66° W 46km	CL	IX (991)	0	0
19	1985-03-23 13:45 UTC	5.7	34.31° S, 72.2° W 30km	CL	VII (12 k)	0	0
20	1985-03-24 16:16 UTC	5.7	34.32° S, 72.23° W 25km	CL	VII (12 k)	0	0
21	1985-03-25 05:14 UTC	6.3	34.27° S, 72.17° W 38km	CL	VIII (154)	0	0
22	1985-06-02 16:26 UTC	5.9	37.86° S, 73.9° W 6km	CL	VI (2 k)	0	0
23	1985-08-12 00:04 UTC	6.2	38.48° S, 73.67° W 22km	CL	VII (3 k)	0	0
24	1986-12-19 05:47 UTC	5	33.07° S, 72.08° W 33km	CL	V (236 k)	0	0
25	1987-02-03 16:42 UTC	5.8	37.75° S, 73.01° W 33km	CL	VII (11 k)	0	0
26	1987-05-14 15:57 UTC	5.8	33.74° S, 72.16° W 30km	CL	VII (1)	0	0
27	1987-09-13 20:08 UTC	5.9	34.35° S, 70.03° W 15km	CL	VIII (69)	0	0
28	1988-03-13 11:31 UTC	5.8	33.67° S, 72.24° W 24km	CL	VI (2 k)	0	0
29	1990-04-21 18:54 UTC	5.8	36.96° S, 73.33° W 13km	CL	VII (17 k)	0	0
30	1990-04-22 20:25 UTC	5.6	38.01° S, 73.44° W 27km	CL	VII (22 k)	0	0
31	1992-05-18 03:02 UTC	6.1	33.61° S, 72° W 32km	CL	VII (89 k)	0	0
32	1992-05-22 01:20 UTC	5.6	33.7° S, 72.01° W 28km	CL	VII (310)	0	0
33	1993-07-16 21:21 UTC	5.6	33.22° S, 71.99° W 29km	CL	VII (89)	0	0
34	1993-12-04 23:16 UTC	5.6	33.9° S, 72.05° W 30km	CL	VII (628)	0	0
35	1995-03-22 20:05 UTC	5.5	36.27° S, 73° W 35km	CL	VII (1)	0	0
36	1995-03-23 09:18 UTC	5.5	36.29° S, 73.12° W 25km	CL	VII (121)	0	0
37	1995-11-21 18:17 UTC	5.7	33.21° S, 71.97° W 36km	CL	VII (7)	0	0
38	1996-02-22 13:40 UTC	5.9	33.59° S, 71.55° W 47km	CL	VII (114 k)	0	0	landslide
39	1998-10-10 04:12 UTC	5.6	33.5° S, 71.97° W 43km	CL	VI (120 k)	0	0
40	1999-03-05 03:35 UTC	5.9	34.64° S, 69.72° W 41km	AR	VII (243)	0	0
41	2001-01-07 10:18 UTC	5.9	33.49° S, 72.12° W 18km	CL	V (1,643 k)	0	0
42	2004-05-03 04:36 UTC	6.6	37.74° S, 73.33° W 21km	CL	IX (23 k)	0	0
43	2004-06-15 11:16 UTC	5.9	38.87° S, 73.28° W 38km	CL	VII (78 k)	0	0
44	2004-08-28 13:41 UTC	6.5	34.92° S, 70.46° W 20km	CL	IX (346)	0	0
45	2004-09-07 12:33 UTC	5.7	34° S, 72.21° W 17km	CL	VI (88)	0	0
46	2006-12-31 14:55 UTC	5.5	37.94° S, 71.11° W 20km	CL	VII (141)	0	0

MMI	City	Population
VII	Talcahuano	253k
VII	Penco	46k
VII	Concepcion	215k
VII	Tome	47k
VI	Chiguayante	83k
VI	Lota	50k
VI	Coronel	93k
V	Bulnes	13k
V	Arauco	25k
V	Yumbel	11k
V	Cabrero	18k
V	La Laja	17k
V	Cauquenes	31k
V	Chillan	150k
V	San Carlos	32k
V	Coihueco	7k
V	Parral	27k
V	Curanilahue	31k
V	Nacimiento	21k
IV	Los Angeles	125k
IV	Lebu	22k
IV	Longavi	6k
IV	Constitucion	38k
IV	Canete	20k
IV	Linares	70k
IV	Angol	45k
IV	Mulchen	22k
IV	San Javier	22k
IV	San Clemente	14k
IV	Collipulli	16k
IV	Talca	197k
IV	Victoria	25k
IV	Traiguen	14k
IV	Molina	29k
III	Lautaro	22k
III	Curico	102k
III	Nueva Imperial	19k
III	Teno	7k
III	Vilcun	9k
III	Temuco	238k
III	Santa Cruz	33k
III	Carahue	12k
III	Chimbarongo	17k
III	Rengo	38k
III	San Vicente	23k
III	Rancagua	213k
III	Machali	28k

(k = x1,000)

PAGER content is automatically generated, and only considers losses due to structural damage. Limitations of input data, shaking estimates, and loss models may add uncertainty. PAGER results are generally available within 30 minutes of the earthquake’s occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following an earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.