M 3.6 - 5.7 mi SSW of Chino, CA
Tuesday, July 29, 2008 at 20:40:41 UTCLocation: 33.9°N 117.7°W Depth: 15km
Alert version 1
Summary
Estimated Population Exposed to Earthquake Shaking
Est. Modified Mercalli Intensity | Est. Population Exposure (k = x1000) | Perceived Shaking | Potential Structure Damage | |
---|---|---|---|---|
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 | 0 | Light | None | None |
II-III | 3,855k | Weak | None | None |
I | 13,245k* | Not Felt | None | None |
MMI | City | Population |
---|---|---|
III | Chino | 75k |
III | Los Serranos | 7k |
II | Ontario | 172k |
II | Upland | 74k |
II | Rancho Cucamonga | 168k |
II | Montclair | 35k |
II | Mira Loma | 18k |
II | Santa Ana | 343k |
II | Anaheim | 328k |
I | Long Beach | 482k |
I | Los Angeles | 3694k |
Population exposure estimates are NOT a direct estimate of earthquake damage; comparable shaking will result in significantly lower losses in regions with well built structures than in regions with vulnerable structures. Overall, the population in this region resides in structures that are resistant to earthquake shaking, though some vulnerable structures exist.
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
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/ci/shake/14384236.
Exposure
Est. Modified Mercalli Intensity | Est. Population Exposure (k = x1000) | Perceived Shaking | Potential Structure Damage | |
---|---|---|---|---|
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 | 0 | Light | None | None |
II-III | 3,855k | Weak | None | None |
I | 13,245k* | Not Felt | None | None |
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 |
---|---|---|
III | Chino | 75k |
III | Los Serranos | 7k |
II | Ontario | 172k |
II | Upland | 74k |
II | Rancho Cucamonga | 168k |
II | Montclair | 35k |
II | Mira Loma | 18k |
II | Rubidoux | 32k |
II | Chino Hills | 66k |
II | Norco | 27k |
II | Pomona | 156k |
II | Glen Avon | 16k |
II | Fontana | 169k |
II | Orange | 128k |
II | Claremont | 35k |
II | Yorba Linda | 64k |
II | Sunnyslope | 4k |
II | Villa Park | 6k |
II | Corona | 152k |
II | Bloomington | 22k |
II | Diamond Bar | 58k |
II | Riverside | 297k |
II | Placentia | 49k |
II | Pedley | 12k |
II | Rowland Heights | 52k |
II | San Antonio Heights | 3k |
II | Highgrove | 3k |
II | Brea | 39k |
II | La Verne | 33k |
II | Santa Ana | 343k |
II | Tustin | 68k |
II | North Tustin | 24k |
II | Anaheim | 328k |
II | Stanton | 37k |
II | Home Gardens | 10k |
II | Walnut | 31k |
II | Garden Grove | 167k |
II | La Habra | 59k |
II | La Habra Heights | 6k |
II | Rialto | 101k |
II | South San Jose Hills | 21k |
II | El Cerrito | 4k |
II | Buena Park | 79k |
II | Grand Terrace | 12k |
II | Cypress | 47k |
II | La Palma | 16k |
II | East La Mirada | 9k |
II | Los Alamitos | 11k |
II | Westminster | 89k |
II | Hacienda Heights | 54k |
I | Fountain Valley | 56k |
I | Fullerton | 135k |
I | Hawaiian Gardens | 15k |
I | La Mirada | 49k |
I | Cerritos | 53k |
I | Rossmoor | 10k |
I | La Puente | 42k |
I | Colton | 52k |
I | Charter Oak | 9k |
I | Valinda | 23k |
I | Covina | 48k |
I | Artesia | 16k |
I | South Whittier | 58k |
I | Whittier | 85k |
I | Norwalk | 109k |
I | West Covina | 109k |
I | Santa Fe Springs | 16k |
I | Citrus | 11k |
I | West Puente Valley | 24k |
I | Avocado Heights | 15k |
I | Bellflower | 75k |
I | San Bernardino | 202k |
I | Loma Linda | 20k |
I | Muscoy | 9k |
I | Pico Rivera | 66k |
I | Irvine | 189k |
I | San Dimas | 36k |
I | Glendora | 51k |
I | Lakewood | 82k |
I | Downey | 111k |
I | South El Monte | 22k |
I | Lynwood | 72k |
I | Azusa | 48k |
I | South Gate | 99k |
I | Bell Gardens | 46k |
I | Costa Mesa | 108k |
I | Paramount | 57k |
I | Woodcrest | 8k |
I | Foothill Ranch | 11k |
I | El Monte | 125k |
I | Walnut Park | 17k |
I | Cudahy | 25k |
I | Willowbrook | 35k |
I | Irwindale | 1k |
I | Montebello | 64k |
I | East Compton | 10k |
I | Seal Beach | 24k |
I | Compton | 96k |
I | Bell | 38k |
I | Baldwin Park | 80k |
I | Newport Beach | 78k |
I | Huntington Beach | 195k |
I | Maywood | 28k |
I | South San Gabriel | 7k |
I | Portola Hills | 9k |
I | Rosemead | 56k |
I | Moreno Valley | 168k |
I | Huntington Park | 63k |
I | Commerce | 13k |
I | North El Monte | 3k |
I | Lake Forest | 76k |
I | Temple City | 37k |
I | Westmont | 32k |
I | West Athens | 9k |
I | San Marino | 13k |
I | Laguna Woods | 19k |
I | Bradbury | 1k |
I | Highland | 51k |
I | Alhambra | 88k |
I | Quartz Hill | 10k |
I | Beaumont | 18k |
I | Valley Center | 10k |
I | Lake Arrowhead | 10k |
I | Mentone | 9k |
I | Alondra Park | 8k |
I | Calimesa | 7k |
I | Rolling Hills Estates | 8k |
I | Westlake Village | 8k |
I | Sierra Madre | 11k |
I | Marina del Rey | 8k |
I | Del Aire | 9k |
I | Canyon Lake | 11k |
I | Vincent | 15k |
I | Palos Verdes Estates | 14k |
I | Lake Los Angeles | 13k |
I | Fillmore | 15k |
I | Wildomar | 16k |
I | Carson | 95k |
I | El Segundo | 16k |
I | East Hemet | 13k |
I | Malibu Beach | 13k |
I | Ladera Heights | 6k |
I | Adelanto | 18k |
I | Valle Vista | 11k |
I | Malibu | 12k |
I | Mission Viejo | 96k |
I | Burbank | 104k |
I | Crestline | 11k |
I | Cherry Valley | 5k |
I | Cabazon | 2k |
I | Mountain View Acres | 2k |
I | Val Verde | 1k |
I | Romoland | 3k |
I | Sedco Hills | 3k |
I | Acton | 3k |
I | Desert View Highlands | 2k |
I | Winchester | 2k |
I | Rainbow | 2k |
I | Westwood | 2k |
I | Hidden Hills | 2k |
I | Morongo Valley | 2k |
I | Oak Park | 2k |
I | Quail Valley | 1k |
I | Casa Conejo | 3k |
I | Avalon | 3k |
I | Lakeland Village | 5k |
I | Running Springs | 5k |
I | Rolling Hills | 1k |
I | Las Flores | 6k |
I | East Pasadena | 6k |
I | Big Bear Lake | 6k |
I | Coto De Caza | 18k |
I | Las Flores | 5k |
I | Wrightwood | 4k |
I | Homeland | 3k |
I | Piru | 1k |
I | Hidden Meadows | 4k |
I | Nuevo | 4k |
I | Bonsall | 4k |
I | Big Bear City | 6k |
I | Calabasas | 21k |
I | Palm Springs | 42k |
I | Rancho Palos Verdes | 42k |
I | Lancaster | 129k |
I | Los Angeles | 3694k |
I | Thousand Oaks | 127k |
I | Escondido | 137k |
I | Simi Valley | 119k |
I | Lake San Marcos | 4k |
I | Apple Valley | 64k |
I | Culver City | 40k |
I | Monrovia | 38k |
I | Lake Elsinore | 40k |
I | Aliso Viejo | 41k |
I | Arcadia | 56k |
I | Altadena | 43k |
I | Perris | 46k |
I | Yucaipa | 50k |
I | Redlands | 70k |
I | San Marcos | 69k |
I | Oceanside | 161k |
I | Hesperia | 73k |
I | Temecula | 85k |
I | Victorville | 83k |
I | Redondo Beach | 67k |
I | Laguna Niguel | 66k |
I | Glendale | 194k |
I | Hemet | 69k |
I | Santa Clarita | 168k |
I | Vista | 92k |
I | San Clemente | 62k |
I | Gardena | 60k |
I | Manhattan Beach | 37k |
I | West Hollywood | 37k |
I | San Fernando | 24k |
I | Laguna Beach | 24k |
I | Lennox | 23k |
I | Rancho Carlsbad Trailer Park | 91k |
I | South Pasadena | 24k |
I | Hawthorne | 87k |
I | Inglewood | 116k |
I | Agoura Hills | 22k |
I | West Carson | 21k |
I | Hermosa Beach | 19k |
I | Sun City | 19k |
I | Agoura | 20k |
I | Lomita | 20k |
I | Santa Monica | 88k |
I | La Canada Flintridge | 21k |
I | Littlerock | 1k |
I | Palmdale | 135k |
I | Dana Point | 35k |
I | Beverly Hills | 35k |
I | North Glendale | 203k |
I | Torrance | 144k |
I | Moorpark | 37k |
I | Lakeview | 1k |
I | San Juan Capistrano | 35k |
I | Fallbrook | 33k |
I | Carlsbad | 78k |
I | Long Beach | 482k |
I | Pasadena | 144k |
I | Banning | 30k |
I | Lawndale | 32k |
I | Laguna Hills | 30k |
I | Desert Hot Springs | 18k |
I | Murrieta Hot Springs | 3k |
I | Rancho Santa Margarita | 51k |
I | Duarte | 22k |
I | Trabuco Canyon | 3k |
I | Belvedere | 2k |
I | San Jacinto | 29k |
I | East Los Angeles | 125k |
I | San Gabriel | 41k |
I | Mayflower Village | 5k |
I | West Compton | 5k |
I | Signal Hill | 10k |
I | Monterey Park | 63k |
I | San Joaquin Hills | 3k |
I | Murrieta | 88k |
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.