PAGER - M 3.1 - 11.9 km (7.4 mi) NNE of Rancho Cucamonga, CA
Alert level does not include impacts from earthquake-related hazards such as tsunamis, landslides, fires or liquefaction.
Earthquake Shaking Alert Level: GREEN
Download Alert PDFWhat's this?Thursday, July 19th, 2012 at 13:23:06 UTC (06:23:06 local)Location: 34.2° N, 117.6° WDepth: 12kmEvent Id: CI15180441Alert Version: 8Created: 1 day, 1 hour after earthquake.
Alert Information
Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.
Estimated Fatalities
| ESTIMATED FATALITIES (LEVEL) | Probability (%) |
|---|---|
| 0 (GREEN) | 99 |
| 1 to 9 (YELLOW) | 1 |
| 10 to 99 (YELLOW) | 0 |
| 100 to 999 (ORANGE) | 0 |
| 1 to 10 thousand (RED) | 0 |
| 10 to 100 thousand (RED) | 0 |
| 100 thousand + (RED) | 0 |
Estimated Economic Losses
| ESTIMATED VALUE IN USD (LEVEL) | Probability (%) |
|---|---|
| 0 to 1 million (GREEN) | 99 |
| 1 to 10 million (YELLOW) | 1 |
| 10 to 100 million (YELLOW) | 0 |
| 100 million to 1 billion (ORANGE) | 0 |
| 1 to 10 billion (RED) | 0 |
| 10 to 100 billion (RED) | 0 |
| 100 billion + (RED) | 0 |
Detailed Information
| Estimated Modified Mercalli Intensity | I | II-III | IV | V | VI | VII | VIII | IX | X | |
|---|---|---|---|---|---|---|---|---|---|---|
| Est. Population Exposure | 13,372k* | 4,026k | 0 | 0 | 0 | 0 | 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 |
| 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
Population per ~1 sq. km. from LandScan
Structure Information Summary
Overall, the population in this region resides in structures that are highly resistant to earthquake shaking, though some vulnerable structures exist.
Historical Earthquakes (with MMI)
| Date (UTC) | Dist (km) | Mag | Max MMI (#) | Shaking Deaths |
|---|---|---|---|---|
| 1984-11-26 | 360 | 5.1 | V (17k) | 0 |
| 2003-12-22 | 357 | 6.6 | VII (213) | 2 |
| 1994-01-17 | 94 | 6.7 | IX (181k) | 33 |
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 |
|---|---|---|
| III | Rancho Cucamonga | 169k |
| III | Fontana | 169k |
| II | Upland | 74k |
| II | Rialto | 102k |
| II | Glen Avon | 16k |
| II | Bloomington | 22k |
| II | Riverside | 298k |
| I | Los Angeles | 3,695k |
| I | Long Beach | 483k |
| I | Santa Ana | 343k |
| I | Anaheim | 328k |
(k = x1,000)
| # | Date/Time | Mag | Lat, Lon, Depth | Country | Max MMI (Exposed) | Deaths | Secondary Effects | |
|---|---|---|---|---|---|---|---|---|
| Shaking | Total | |||||||
| 1 | 1973-02-21 14:45 UTC | 5.9 | 34.06° N, 119.05° W 6km | US | VIII (4 k) | 0 | 0 | |
| 2 | 1978-05-05 21:03 UTC | 5.5 | 32.22° N, 115.32° W 5km | MX | VIII (97) | 0 | 0 | |
| 3 | 1978-08-13 22:54 UTC | 5.8 | 34.39° N, 119.64° W 8km | US | VIII (40 k) | 0 | 0 | |
| 4 | 1978-10-04 16:42 UTC | 5.4 | 37.39° N, 118.69° W 8km | US | VI (598) | 0 | 0 | |
| 5 | 1979-03-15 21:07 UTC | 5.5 | 34.2° N, 116.53° W 15km | US | VII (744) | 0 | 0 | |
| 6 | 1979-10-15 23:17 UTC | 6.5 | 32.82° N, 115.64° W 9km | US | IX (3 k) | 0 | 0 | |
| 7 | 1979-10-16 05:49 UTC | 5.6 | 33.02° N, 115.57° W 5km | US | VIII (611) | 0 | 0 | |
| 8 | 1979-10-16 06:19 UTC | 5.1 | 32.73° N, 115.76° W 10km | US | VII (77) | 0 | 0 | |
| 9 | 1979-10-16 06:58 UTC | 5.6 | 32.95° N, 115.62° W 10km | US | VIII (287) | 0 | 0 | |
| 10 | 1979-10-16 23:16 UTC | 5.5 | 32.92° N, 115.55° W 4km | US | VIII (40) | 0 | 0 | |
| 11 | 1980-02-25 10:47 UTC | 5.6 | 33.52° N, 116.55° W 6km | US | VII (847) | 0 | 0 | |
| 12 | 1980-05-25 16:33 UTC | 6.2 | 37.53° N, 118.83° W 11km | US | IX (72) | 0 | 0 | landslide |
| 13 | 1980-05-25 16:49 UTC | 5.9 | 37.55° N, 119.02° W 3km | US | VIII (16) | 0 | 0 | |
| 14 | 1980-05-25 19:44 UTC | 5.9 | 37.38° N, 118.84° W 4km | US | VII (2) | 0 | 0 | landslide |
| 15 | 1980-05-25 20:35 UTC | 5.9 | 37.44° N, 118.96° W 2km | US | VI (6 k) | 0 | 0 | |
| 16 | 1980-05-25 20:59 UTC | 5.5 | 37.59° N, 118.83° W 10km | US | VII (660) | 0 | 0 | |
| 17 | 1980-05-26 12:24 UTC | 5.6 | 37.58° N, 118.9° W 2km | US | VII (2 k) | 0 | 0 | |
| 18 | 1980-05-26 18:57 UTC | 5.7 | 37.56° N, 118.9° W 6km | US | VII (2 k) | 0 | 0 | |
| 19 | 1980-05-27 14:50 UTC | 5.9 | 37.42° N, 118.8° W 1km | US | VIII (3) | 0 | 0 | |
| 20 | 1980-06-09 03:28 UTC | 6.3 | 32.27° N, 114.91° W 5km | MX | IX (336) | 1 | 1 | |
| 21 | 1981-04-26 12:09 UTC | 5.9 | 33.12° N, 115.64° W 1km | US | VIII (11) | 0 | 0 | |
| 22 | 1981-09-04 15:50 UTC | 5.8 | 33.9° N, 119.03° W 15km | US | VI (13 k) | 0 | 0 | |
| 23 | 1981-09-30 11:53 UTC | 5.6 | 37.55° N, 118.8° W 15km | US | VII (591) | 0 | 0 | |
| 24 | 1983-05-02 23:42 UTC | 6.3 | 36.22° N, 120.3° W 10km | US | IX (29) | 0 | 0 | |
| 25 | 1983-05-02 23:46 UTC | 5.7 | 36.23° N, 120.29° W 8km | US | VIII (1 k) | 0 | 0 | |
| 26 | 1983-07-09 07:40 UTC | 5.1 | 36.17° N, 120.37° W 1km | US | VII (10 k) | 0 | 0 | |
| 27 | 1983-07-22 02:39 UTC | 5.7 | 36.2° N, 120.34° W 7km | US | VII (1 k) | 0 | 0 | |
| 28 | 1984-11-23 18:08 UTC | 5.8 | 37.34° N, 118.51° W 15km | US | VIII (8 k) | 0 | 0 | |
| 29 | 1984-11-23 19:12 UTC | 5.5 | 37.44° N, 118.64° W 0km | US | VII (381) | 0 | 0 | |
| 30 | 1984-11-26 16:21 UTC | 5.1 | 37.29° N, 118.76° W 10km | US | V (17 k) | 0 | 0 | landslide |
| 31 | 1985-08-04 12:01 UTC | 6.1 | 36.14° N, 120.11° W 15km | US | IX (713) | 0 | 0 | |
| 32 | 1986-07-08 09:20 UTC | 6 | 33.97° N, 116.78° W 12km | US | VIII (8 k) | 0 | 0 | landslide |
| 33 | 1986-07-13 13:47 UTC | 5.8 | 33.05° N, 117.85° W 2km | US | V (9,528 k) | 0 | 1 | landslide |
| 34 | 1986-07-20 14:29 UTC | 5.8 | 37.5° N, 118.45° W 15km | US | VIII (9) | 0 | 0 | |
| 35 | 1986-07-21 14:42 UTC | 6.2 | 37.5° N, 118.44° W 10km | US | VIII (375) | 0 | 0 | |
| 36 | 1986-07-21 14:51 UTC | 5.7 | 37.5° N, 118.37° W 9km | US | VIII (270) | 0 | 0 | |
| 37 | 1986-07-21 22:07 UTC | 5.4 | 37.64° N, 118.49° W 6km | US | VII (15) | 0 | 0 | |
| 38 | 1986-07-31 07:22 UTC | 5.5 | 37.46° N, 118.4° W 15km | US | VII (210) | 0 | 0 | |
| 39 | 1987-10-01 14:42 UTC | 5.9 | 34.06° N, 118.13° W 14km | US | VIII (20 k) | 8 | 8 | |
| 40 | 1987-10-04 10:59 UTC | 5.2 | 34.02° N, 118.14° W 11km | US | VII (453 k) | 0 | 1 | |
| 41 | 1987-11-24 01:54 UTC | 6 | 33.22° N, 115.79° W 15km | US | VIII (250) | 0 | 2 | |
| 42 | 1987-11-24 13:15 UTC | 6.5 | 33.07° N, 115.95° W 2km | US | IX (599) | 0 | 0 | |
| 43 | 1988-02-11 15:25 UTC | 4.8 | 34.08° N, 118.05° W 12km | US | VII (11 k) | 0 | 1 | |
| 44 | 1988-12-03 11:38 UTC | 5 | 34.15° N, 118.13° W 13km | US | VI (1,090 k) | 0 | 0 | |
| 45 | 1989-01-19 06:53 UTC | 5.2 | 33.91° N, 118.7° W 9km | US | VI (14 k) | 0 | 0 | |
| 46 | 1990-02-28 23:43 UTC | 5.7 | 34.14° N, 117.75° W 3km | US | VIII (12 k) | 0 | 0 | |
| 47 | 1991-06-28 14:43 UTC | 5.6 | 34.24° N, 118.01° W 11km | US | VII (8 k) | 1 | 1 | |
| 48 | 1992-04-23 04:50 UTC | 6.2 | 33.87° N, 116.52° W 4km | US | VIII (16 k) | 0 | 0 | |
| 49 | 1992-06-28 11:57 UTC | 7.3 | 34.18° N, 116.53° W 11km | US | IX (2 k) | 1 | 1 | |
| 50 | 1992-06-28 15:05 UTC | 6.5 | 34.29° N, 116.82° W 12km | US | IX (2 k) | 0 | 0 | landslide |
| 51 | 1992-06-29 10:14 UTC | 5.7 | 36.77° N, 116.32° W 11km | US | VIII (127) | 0 | 0 | |
| 52 | 1992-06-29 16:01 UTC | 5.5 | 33.82° N, 116.44° W 15km | US | VIII (8 k) | 0 | 0 | |
| 53 | 1992-07-11 18:14 UTC | 5.7 | 34.96° N, 118.19° W 15km | US | VIII (568) | 0 | 0 | |
| 54 | 1992-11-27 16:00 UTC | 5.6 | 34.23° N, 117.01° W 5km | US | VII (4 k) | 0 | 0 | |
| 55 | 1993-05-17 23:20 UTC | 6.1 | 37.15° N, 117.82° W 10km | US | VIII (6) | 0 | 0 | |
| 56 | 1994-01-17 12:30 UTC | 6.7 | 34.16° N, 118.58° W 11km | US | IX (181 k) | 33 | 33 | landslide, liquefaction |
| 57 | 1994-01-17 23:33 UTC | 5.8 | 34.27° N, 118.79° W 8km | US | VIII (70 k) | 0 | 0 | |
| 58 | 1994-01-18 00:43 UTC | 5.5 | 34.26° N, 118.89° W 17km | US | VII (97 k) | 0 | 0 | |
| 59 | 1995-09-20 23:27 UTC | 5.5 | 35.63° N, 117.73° W 15km | US | VIII (852) | 0 | 0 | |
| 60 | 1999-05-15 13:22 UTC | 5.5 | 37.45° N, 118.8° W 1km | US | VII (4) | 0 | 0 | |
| 61 | 1999-10-16 09:46 UTC | 7.1 | 34.52° N, 116.44° W 5km | US | IX (17 k) | 0 | 0 | |
| 62 | 1999-10-16 09:59 UTC | 5.8 | 34.56° N, 116.79° W 9km | US | VIII (19) | 0 | 0 | |
| 63 | 1999-10-16 12:57 UTC | 5.7 | 34.27° N, 116.23° W 12km | US | VIII (201) | 0 | 0 | |
| 64 | 2001-12-08 23:36 UTC | 5.7 | 32.05° N, 114.9° W 9km | MX | VIII (72) | 0 | 0 | |
| 65 | 2002-02-22 19:32 UTC | 5.5 | 32.38° N, 115.19° W 9km | MX | VIII (8 k) | 0 | 0 | |
| 66 | 2003-12-22 19:15 UTC | 6.6 | 35.62° N, 121.07° W 16km | US | VII (213) | 2 | 2 | landslide, liquefaction |
| 67 | 2004-09-28 17:15 UTC | 6 | 35.75° N, 120.32° W 5km | US | VII (160) | 0 | 0 | |
| 68 | 2005-06-16 20:53 UTC | 4.9 | 33.95° N, 117.05° W 18km | US | VI (63 k) | 0 | 0 | |
| MMI | City | Population |
|---|---|---|
| III | Rancho Cucamonga | 169k |
| III | Fontana | 169k |
| II | Upland | 74k |
| II | Rialto | 102k |
| II | Glen Avon | 16k |
| II | Bloomington | 22k |
| II | Muscoy | 10k |
| II | Ontario | 173k |
| II | Mira Loma | 19k |
| II | San Antonio Heights | 3k |
| II | Sunnyslope | 5k |
| II | Montclair | 36k |
| II | San Bernardino | 202k |
| II | Chino | 75k |
| II | Rubidoux | 32k |
| II | Claremont | 35k |
| II | Wrightwood | 4k |
| II | Colton | 52k |
| II | La Verne | 34k |
| II | Pomona | 156k |
| II | Loma Linda | 21k |
| II | Rowland Heights | 52k |
| II | Grand Terrace | 13k |
| II | La Puente | 43k |
| II | Hacienda Heights | 54k |
| II | Highgrove | 4k |
| II | Los Serranos | 7k |
| II | Moreno Valley | 169k |
| II | Redlands | 70k |
| II | Avocado Heights | 16k |
| II | Valinda | 24k |
| II | West Puente Valley | 24k |
| II | Whittier | 86k |
| II | El Monte | 125k |
| II | San Jacinto | 29k |
| II | South El Monte | 22k |
| II | South Whittier | 59k |
| II | West Covina | 110k |
| II | East Hemet | 14k |
| II | Hemet | 69k |
| II | Norco | 27k |
| II | San Dimas | 36k |
| II | Charter Oak | 9k |
| II | Mayflower Village | 5k |
| II | North El Monte | 4k |
| II | Covina | 49k |
| II | Pico Rivera | 66k |
| II | Rosemead | 56k |
| II | El Cerrito | 5k |
| II | Mountain View Acres | 3k |
| II | South San Gabriel | 8k |
| II | Canyon Lake | 12k |
| II | La Palma | 16k |
| II | Lakeland Village | 6k |
| II | Lakeview | 2k |
| II | Lenwood | 3k |
| II | Quartz Hill | 10k |
| II | Santa Fe Springs | 16k |
| II | Temple City | 38k |
| II | Citrus | 11k |
| II | La Habra Heights | 6k |
| II | Azusa | 48k |
| II | La Habra | 60k |
| II | Baldwin Park | 81k |
| II | East La Mirada | 10k |
| II | South San Jose Hills | 22k |
| II | La Mirada | 50k |
| II | Riverside | 298k |
| II | Home Gardens | 11k |
| II | Corona | 153k |
| II | Valle Vista | 12k |
| II | Irwindale | 2k |
| II | Pedley | 13k |
| II | Hesperia | 74k |
| II | Walnut | 32k |
| II | Highland | 51k |
| II | Mentone | 9k |
| II | Montebello | 64k |
| II | Belvedere | 2k |
| II | Bradbury | 1k |
| II | Duarte | 23k |
| II | Oak Park | 2k |
| II | Rainbow | 2k |
| II | Rolling Hills | 2k |
| II | Rolling Hills Estates | 8k |
| II | South Pasadena | 25k |
| I | Chino Hills | 67k |
| I | Glendora | 52k |
| I | Diamond Bar | 59k |
| I | Beaumont | 19k |
| I | Crestline | 11k |
| I | Winchester | 2k |
| I | Woodcrest | 9k |
| I | Murrieta Hot Springs | 4k |
| I | Homeland | 4k |
| I | Running Springs | 6k |
| I | Lake Arrowhead | 11k |
| I | Acton | 3k |
| I | Adelanto | 18k |
| I | Agoura | 21k |
| I | Agoura Hills | 22k |
| I | Alhambra | 88k |
| I | Aliso Viejo | 41k |
| I | Alondra Park | 8k |
| I | Altadena | 43k |
| I | Anaheim | 328k |
| I | Apple Valley | 64k |
| I | Arcadia | 57k |
| I | Artesia | 17k |
| I | Banning | 30k |
| I | Barstow | 21k |
| I | Barstow Heights | 24k |
| I | Bell | 38k |
| I | Bell Gardens | 46k |
| I | Bellflower | 76k |
| I | Beverly Hills | 35k |
| I | Big Bear City | 6k |
| I | Big Bear Lake | 6k |
| I | Boron | 2k |
| I | Brea | 40k |
| I | Buena Park | 79k |
| I | Burbank | 105k |
| I | Cabazon | 3k |
| I | Calabasas | 21k |
| I | Calimesa | 8k |
| I | Carson | 96k |
| I | Cathedral City | 53k |
| I | Cerritos | 53k |
| I | Cherry Valley | 6k |
| I | Commerce | 14k |
| I | Compton | 97k |
| I | Costa Mesa | 109k |
| I | Coto De Caza | 19k |
| I | Cudahy | 26k |
| I | Culver City | 40k |
| I | Cypress | 47k |
| I | Dana Point | 36k |
| I | Del Aire | 10k |
| I | Desert Hot Springs | 19k |
| I | Desert View Highlands | 2k |
| I | Downey | 112k |
| I | East Compton | 10k |
| I | East Los Angeles | 125k |
| I | East Pasadena | 6k |
| I | East San Gabriel | 16k |
| I | El Segundo | 17k |
| I | Fallbrook | 34k |
| I | Foothill Ranch | 12k |
| I | Fountain Valley | 56k |
| I | Fullerton | 135k |
| I | Garden Grove | 167k |
| I | Gardena | 61k |
| I | Glendale | 195k |
| I | Hawaiian Gardens | 16k |
| I | Hawthorne | 87k |
| I | Hermosa Beach | 20k |
| I | Hidden Hills | 2k |
| I | Hollywood | 168k |
| I | Huntington Beach | 196k |
| I | Huntington Park | 64k |
| I | Indian Wells | 4k |
| I | Inglewood | 116k |
| I | Irvine | 189k |
| I | Joshua Tree | 4k |
| I | La Canada Flintridge | 21k |
| I | La Quinta | 38k |
| I | Ladera Heights | 7k |
| I | Laguna Beach | 24k |
| I | Laguna Hills | 31k |
| I | Laguna Niguel | 66k |
| I | Laguna Woods | 20k |
| I | Lake Elsinore | 41k |
| I | Lake Forest | 77k |
| I | Lake Los Angeles | 14k |
| I | Lakewood | 82k |
| I | Lancaster | 130k |
| I | Las Flores | 6k |
| I | Las Flores | 6k |
| I | Lawndale | 33k |
| I | Lennox | 23k |
| I | Littlerock | 1k |
| I | Lomita | 21k |
| I | Long Beach | 483k |
| I | Los Alamitos | 12k |
| I | Los Angeles | 3,695k |
| I | Lynwood | 72k |
| I | Malibu Beach | 14k |
| I | Manhattan Beach | 37k |
| I | Marina del Rey | 9k |
| I | Maywood | 29k |
| I | Mission Viejo | 96k |
| I | Monrovia | 38k |
| I | Monterey Park | 63k |
| I | Morongo Valley | 2k |
| I | Murrieta | 89k |
| I | Newport Beach | 79k |
| I | North Edwards | 1k |
| I | North Glendale | 203k |
| I | Norwalk | 109k |
| I | Nuevo | 5k |
| I | Orange | 129k |
| I | Palm Desert | 49k |
| I | Palm Springs | 43k |
| I | Palmdale | 135k |
| I | Palos Verdes Estates | 14k |
| I | Paramount | 57k |
| I | Pasadena | 145k |
| I | Perris | 46k |
| I | Piru | 1k |
| I | Placentia | 49k |
| I | Portola Hills | 9k |
| I | Quail Valley | 2k |
| I | Rancho Mirage | 17k |
| I | Rancho Palos Verdes | 43k |
| I | Rancho Santa Margarita | 51k |
| I | Redondo Beach | 68k |
| I | Romoland | 3k |
| I | Rosamond | 19k |
| I | Rossmoor | 11k |
| I | San Clemente | 62k |
| I | San Fernando | 25k |
| I | San Gabriel | 42k |
| I | San Joaquin Hills | 3k |
| I | San Juan Capistrano | 35k |
| I | San Marino | 13k |
| I | Santa Ana | 343k |
| I | Santa Clarita | 169k |
| I | Santa Monica | 88k |
| I | Seal Beach | 24k |
| I | Sedco Hills | 3k |
| I | Sierra Madre | 11k |
| I | Signal Hill | 11k |
| I | Simi Valley | 119k |
| I | South Gate | 100k |
| I | Stanton | 38k |
| I | Sun City | 20k |
| I | Temecula | 85k |
| I | Thousand Palms | 6k |
| I | Torrance | 145k |
| I | Trabuco Canyon | 3k |
| I | Tustin | 69k |
| I | North Tustin | 24k |
| I | Val Verde | 1k |
| I | Victorville | 84k |
| I | Villa Park | 6k |
| I | Vincent | 15k |
| I | Walnut Park | 17k |
| I | West Athens | 9k |
| I | West Carson | 22k |
| I | West Compton | 6k |
| I | West Hollywood | 37k |
| I | Westminster | 90k |
| I | Westmont | 32k |
| I | Westwood | 2k |
| I | Wildomar | 16k |
| I | Willowbrook | 35k |
| I | Yorba Linda | 65k |
| I | Yucaipa | 50k |
| I | Yucca Valley | 19k |
(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.
