M 5.7 - COLOMBIA

Saturday, September 13, 2008 at 09:32:00 UTC
Location: 4.8°N 75.4°W Depth: 118km
Alert version 1

Summary

Estimated Population Exposed to Earthquake Shaking

Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Potential Structure Damage
Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Resistant	Vulnerable
X	0	Extreme	V. Heavy	V. Heavy
IX	0	Violent	Heavy	V. Heavy
VIII	0	Severe	Moderate/Heavy	Heavy
VII	0	Very Strong	Moderate	Moderate/Heavy
VI	0	Strong	Light	Moderate
V	0	Moderate	V. Light	Light
IV	12,911k	Light	None	None
II-III	10,416k*	Weak	None	None
I	--*	Not Felt	None	None

*Estimated exposure only includes population within the map area.

Population Exposure

Population per ˜1 square km from Landscan 2005

Selected City Exposure

MMI	City	Population
IV	Calarca	62k
IV	La Virginia	33k
IV	Alcala	9k
IV	Santa Rosa de Cabal	57k
IV	Murillo	1k
IV	Chinchina	68k
IV	Pereira	440k
IV	Ibague	421k
III	Bogota	7102k
III	Medellin	1999k
III	Cali	2392k

Shaking Intensity

MMI

Overall, the population in this region resides in structures that are vulnerable to earthquake shaking, though some resistant structures exist. A magnitude 6.1 earthquake 51 km Northeast of this one struck Colombia on January 25, 1999 (UTC), with estimated population exposures of 32,000 at intensity VIII and 393,000 at intensity VII, resulting in an estimated 1,900 fatalities. Recent earthquakes in this area have caused, landslides and liquefaction that may have contributed to losses.

PAGER results are generally available on the Internet 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 exposure estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.

Maps

[Population | Shakemap]

Map of MMI contours plotted over population per ˜1 square km (see gray scale bar on top of map). The regions of integer MMI values are separated by the thick contour lines and labeled with Roman numerals. The total population exposure to a given MMI value is obtained by summing the population between the thick contour lines. This total is shown in population exposure table.

Map of shaking intensity. This map shows the estimated MMI as a continuous color scale. The ground shaking estimates can be obtained from http://earthquake.usgs.gov/shakemap/global/shake/2008wxay.

Exposure

Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Potential Structure Damage
Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Resistant	Vulnerable
X	0	Extreme	V. Heavy	V. Heavy
IX	0	Violent	Heavy	V. Heavy
VIII	0	Severe	Moderate/Heavy	Heavy
VII	0	Very Strong	Moderate	Moderate/Heavy
VI	0	Strong	Light	Moderate
V	0	Moderate	V. Light	Light
IV	12,911k	Light	None	None
II-III	10,416k*	Weak	None	None
I	--*	Not Felt	None	None

*Estimated exposure only includes population within the map area.

Table showing population exposed to different estimated Modified Mercalli Intensity (MMI) levels and the possible damage at different intensity levels for resistant and vulnerable structures. MMI describes the severity of an earthquake in terms of its effect on humans and structures and is a rough measure of the amount of shaking at a given location. Unlike earthquake magnitude, intensity varies with distance from the fault, and is influenced by the depth of the earthquake and the types of soils in the shaken region. Population outside the map bounds are not included in the totals.

Cities

MMI	City	Population
IV	Calarca	62k
IV	La Virginia	33k
IV	Alcala	9k
IV	Santa Rosa de Cabal	57k
IV	Murillo	1k
IV	Chinchina	68k
IV	Salento	4k
IV	Villamaria	35k
IV	Ulloa	2k
IV	Dos Quebradas	179k
IV	Manizales	357k
IV	Armenia	315k
IV	Palestina	7k
IV	Pereira	440k
IV	La Tebaida	27k
IV	Filandia	6k
IV	Circasia	20k
IV	Herveo	3k
IV	Guayabal	5k
IV	Libano	28k
IV	Villahermosa	4k
IV	Neira	11k
IV	Marsella	11k
IV	Anzoategui	2k
IV	Casabianca	1k
IV	Cajamarca	9k
IV	Montenegro	36k
IV	Quimbaya	31k
IV	Obando	7k
IV	Venadillo	11k
IV	Ibague	421k
IV	Belalcazar	6k
IV	Cartago	134k
IV	San Jose	1k
IV	Aranzazu	9k
IV	Falan	5k
IV	Marulanda	1k
IV	Lerida	20k
IV	Mariquita	23k
IV	Palocabildo	3k
IV	Rovira	6k
IV	Fresno	17k
IV	Filadelfia	5k
IV	Ansermanuevo	12k
IV	Alvarado	2k
IV	Risaralda	5k
IV	Cordoba	4k
IV	La Victoria	11k
IV	Viterbo	15k
IV	Manzanares	16k
IV	Piedras	1k
IV	Balboa	2k
IV	Pijao	5k
IV	Buenavista	2k
IV	Ambalema	4k
IV	Salamina	18k
IV	Marquetalia	6k
IV	San Luis	4k
IV	Belen de Umbria	15k
IV	Pensilvania	8k
IV	Quinchia	10k
IV	Apia	6k
IV	Santuario	6k
IV	Toro	13k
IV	Genova	7k
IV	Guatica	4k
IV	Flandes	20k
IV	Anserma	25k
IV	El Aguila	2k
IV	La Celia	4k
IV	Caicedonia	32k
IV	Riosucio	18k
IV	Supia	12k
IV	Mistrato	6k
IV	Marmato	1k
IV	Girardot	130k
IV	Zarzal	28k
IV	Guataqui	1k
IV	Victoria	4k
IV	Valle de San Juan	1k
IV	Pacora	8k
IV	Espinal	56k
IV	Narino	3k
IV	Argelia	3k
IV	La Union	23k
IV	Narino	1k
IV	Caramanta	3k
IV	Pueblo Rico	4k
IV	Guamo	14k
IV	La Merced	3k
IV	Ricaurte	2k
IV	Ortega	6k
IV	Sevilla	41k
IV	Honda	28k
IV	Aguadas	19k
IV	Valparaiso	3k
IV	Roldanillo	27k
IV	Chaguani	1k
IV	El Cairo	3k
IV	Saldana	9k
IV	Roncesvalles	3k
IV	San Jose del Palmar	2k
IV	Versalles	3k
IV	Viani	1k
IV	Quipile	1k
IV	Guaduas	14k
IV	Tocaima	10k
IV	Agua de Dios	10k
IV	Apulo	4k
IV	Norcasia	5k
IV	Granada	1k
IV	Jardin	7k
IV	Sonson	17k
IV	Coyaima	3k
IV	Tamesis	6k
IV	Puerto Salgar	9k
IV	Bolivar	4k
IV	El Dovio	7k
IV	La Dorada	81k
IV	Bugalagrande	12k
IV	Andalucia	17k
IV	Carmen de Apicala	5k
IV	San Antonio	5k
IV	Anapoima	4k
IV	Bojaca	4k
IV	La Pintada	5k
IV	Argelia	3k
IV	Guayabal de Siquima	1k
IV	Anolaima	5k
IV	Suarez	1k
IV	Villeta	20k
IV	Cachipay	4k
IV	Andes	16k
IV	Nilo	1k
IV	Alban	1k
IV	Abejorral	7k
IV	Viota	5k
IV	Zipacon	1k
IV	Sasaima	2k
IV	Cunday	2k
IV	Melgar	25k
IV	Utica	2k
IV	Madrid	50k
IV	Tulua	165k
IV	Facatativa	94k
IV	Purificacion	10k
IV	El Rosal	5k
IV	Mosquera	27k
IV	Jerico	7k
IV	Funza	54k
IV	Caparrapi	4k
IV	Nocaima	2k
IV	Pueblorrico	5k
IV	Santa Barbara	12k
IV	Bagado	4k
IV	San Antonio del Tequendama	1k
IV	Betania	3k
IV	La Pena	1k
IV	La Vega	5k
IV	Soacha	313k
IV	Icononzo	3k
IV	El Carmen	2k
IV	Hispania	2k
IV	Chaparral	19k
IV	Vergara	2k
IV	Silvania	8k
IV	Novita	1k
IV	Trujillo	5k
IV	Condoto	9k
IV	Prado	3k
IV	Tarso	2k
IV	Pandi	1k
IV	Fredonia	8k
IV	Montebello	2k
IV	Riofrio	9k
IV	San Francisco	2k
IV	San Pedro	5k
IV	Puerto Triunfo	4k
IV	Ataco	4k
IV	Arbelaez	5k
IV	Cota	7k
IV	Tenjo	3k
IV	Fusagasuga	88k
IV	Natagaima	11k
IV	La Union	8k
IV	Rionegro	62k
IV	La Ceja	36k
IV	Certegui	2k
IV	Supata	1k
IV	Istmina	13k
IV	Tado	10k
IV	Venecia	1k
IV	Venecia	5k
IV	Ciudad Bolivar	16k
IV	Carmen de Viboral	21k
IV	Villarrica	3k
IV	Sibate	23k
IV	Topaipi	1k
IV	Pasca	3k
IV	Guacari	19k
IV	Chia	64k
IV	Subachoque	4k
IV	Yacopi	3k
IV	Retiro	7k
IV	Cabrera	1k
IV	Cocorna	5k
IV	Amaga	12k
IV	Buga	118k
IV	Puerto Boyaca	27k
IV	La Cumbre	2k
IV	El Canton de San Pablo	3k
IV	Ginebra	6k
III	Salgar	6k
III	Caldas	65k
III	Zipaquira	91k
III	San Luis	6k
III	Pacho	16k
III	Tabio	4k
III	Titiribi	3k
III	El Cerrito	38k
III	Marinilla	24k
III	Lloro	2k
III	Angelopolis	1k
III	Concordia	9k
III	Rioblanco	6k
III	Santuario	17k
III	Granada	5k
III	Sabaneta	34k
III	La Estrella	49k
III	Envigado	163k
III	Bogota	7102k
III	Itagui	281k
III	Quibdo	75k
III	Yotoco	8k
III	Armenia	2k
III	Cajica	24k
III	Cogua	4k
III	San Vicente	5k
III	Palmira	247k
III	San Francisco	2k
III	Quipama	3k
III	Betulia	5k
III	San Carlos	7k
III	Chipaque	2k
III	Heliconia	2k
III	Guatape	5k
III	Sopo	8k
III	Une	3k
III	Guarne	14k
III	La Calera	10k
III	Guasca	3k
III	Medellin	1999k
III	Sutatausa	1k
III	Muzo	7k
III	Otanche	3k
III	Restrepo	9k
III	Nemocon	5k
III	Caqueza	7k
III	San Rafael	7k
III	Ubaque	1k
III	Choachi	4k
III	Bello	392k
III	Tocancipa	6k
III	Vijes	4k
III	Copacabana	49k
III	Candelaria	23k
III	Fosca	1k
III	Ebejico	2k
III	Gachancipa	3k
III	Fomeque	5k
III	Simijaca	4k
III	Pradera	44k
III	Suesca	4k
III	Colombia	2k
III	San Pablo de Borbur	1k
III	Entrerrios	3k
III	Caracoli	3k
III	Maripi	1k
III	Concepcion	1k
III	Yumbo	71k
III	Guatavita	1k
III	Sesquile	1k
III	Carmen de Carupa	1k
III	Barbosa	16k
III	Ubate	20k
III	Quetame	1k
III	Aipe	7k
III	Villavieja	2k
III	San Jeronimo	3k
III	Urrao	18k
III	Planadas	9k
III	Pauna	2k
III	Don Matias	10k
III	San Pedro	8k
III	Florida	47k
III	Santo Domingo	2k
III	Susa	1k
III	Padilla	4k
III	Cucunuba	1k
III	Caicedo	1k
III	Acacias	40k
III	San Roque	5k
III	Guayabetal	2k
III	Baraya	4k
III	Puerto Tejada	53k
III	Miranda	13k
III	Florian	1k
III	Cisneros	8k
III	Pie de Pato	3k
III	Dagua	12k
III	Guamal	5k
III	Choconta	7k
III	Gomez Plata	4k
III	Cubarral	2k
III	Villavicencio	321k
III	Lenguazaque	2k
III	La Belleza	1k
III	Junin	1k
III	Tello	4k
III	Gacheta	4k
III	Buenaventura	240k
III	Puerto Berrio	33k
III	Antioquia	11k
III	Cali	2392k
III	Jamundi	44k
III	Chiquinquira	45k
III	Belmira	1k
III	Guacheta	4k
III	Yolombo	6k
III	Corinto	16k
III	Santa Rosa de Osos	10k
III	Macheta	1k
III	Castilla La Nueva	1k
III	Cumaral	11k
III	Maceo	3k
III	Restrepo	7k
III	Lejanias	5k
III	Villapinzon	5k
III	Saboya	1k
III	Nuqui	2k
III	Manta	1k
III	Santa Maria	2k
III	Gachala	1k
III	San Martin	16k
III	Carolina	3k
III	Guateque	7k
III	Liborina	2k
III	Mesetas	4k
III	Raquira	2k
III	Abriaqui	1k
III	Guayata	2k
III	El Castillo	2k
III	Yali	3k
III	Sutamarchan	1k
III	Giraldo	1k
III	Sucre	1k
III	Buritica	2k
III	Ventaquemada	1k
III	Granada	32k
III	Turmeque	2k
III	San Juan de Arama	2k
III	Somondoco	1k
III	Umbita	1k
III	Bolivar	2k
III	Tenza	1k
III	Sachica	1k
III	Santa Sofia	1k
III	Canasgordas	6k
III	Puente Nacional	5k
III	Cimitarra	11k
III	Samaca	3k
III	Buenaventura	248k
III	Villa de Leiva	5k
III	Toribio	3k
III	Tibana	1k
III	Caloto	6k
III	Cucaita	1k
III	Fuente de Oro	3k
III	Puerto Parra	1k
III	Barbosa	20k
III	Velez	10k
III	La Capilla	1k
III	Moniquira	9k
III	Landazuri	3k
III	Santander de Quilichao	40k
III	Vigia del Fuerte	4k
III	Bellavista	1k
III	Arcabuco	1k
III	Guepsa	2k
III	Buenos Aires	2k
III	Vista Hermosa	4k
III	Suarez	9k
III	Santana	2k
III	La Paz	1k
III	Suaita	2k
III	Contratacion	3k
III	Guadalupe	2k
II	El Carmen	1k

Table of MMI estimates and populations for settlements falling within the map boundaries. The settlement name, location, and population are obtained from the freely-available GeoNames geographical database.

Downloads

Details

Magnitude	5.7
Max MMI	IV
Date-Time	Saturday, September 13, 2008 at 09:32:00 UTC
Location	4.828°N, 75.407°W
Depth	118.4 km (73.6 miles)
Event ID	US2008WXAY
Version	1

Additional Information