PAGER - M 3.5 - 4.3 km (2.6 mi) SSW of Irvine, 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, September 15th, 2011 at 09:56:41 UTC (02:56:41 local)Location: 33.6° N, 117.8° WDepth: 10kmEvent Id: CI11006789Alert Version: 9Created: 1 day, 6 hours 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 | 14,716k | 3,096k | 777k | 474 | 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 |
|---|---|---|---|---|
| 1986-07-13 | 65 | 5.8 | V (10m) | 0 |
| 1994-01-17 | 89 | 6.7 | IX (181k) | 33 |
| 2003-12-22 | 369 | 6.6 | VII (213) | 2 |
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 |
|---|---|---|
| IV | Irvine | 189k |
| IV | San Joaquin Hills | 3k |
| IV | Costa Mesa | 109k |
| IV | Newport Beach | 79k |
| IV | Santa Ana | 343k |
| III | Garden Grove | 167k |
| III | Anaheim | 328k |
| I | Long Beach | 483k |
| I | Los Angeles | 3,695k |
| I | Riverside | 298k |
| I | North Glendale | 203k |
(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 | 1979-03-15 21:07 UTC | 5.5 | 34.2° N, 116.53° W 15km | US | VII (744) | 0 | 0 | |
| 5 | 1979-10-15 23:17 UTC | 6.5 | 32.82° N, 115.64° W 9km | US | IX (3 k) | 0 | 0 | |
| 6 | 1979-10-16 05:49 UTC | 5.6 | 33.02° N, 115.57° W 5km | US | VIII (611) | 0 | 0 | |
| 7 | 1979-10-16 06:19 UTC | 5.1 | 32.73° N, 115.76° W 10km | US | VII (77) | 0 | 0 | |
| 8 | 1979-10-16 06:58 UTC | 5.6 | 32.95° N, 115.62° W 10km | US | VIII (287) | 0 | 0 | |
| 9 | 1979-10-16 23:16 UTC | 5.5 | 32.92° N, 115.55° W 4km | US | VIII (40) | 0 | 0 | |
| 10 | 1980-02-25 10:47 UTC | 5.6 | 33.52° N, 116.55° W 6km | US | VII (847) | 0 | 0 | |
| 11 | 1980-06-09 03:28 UTC | 6.3 | 32.27° N, 114.91° W 5km | MX | IX (336) | 1 | 1 | |
| 12 | 1981-04-26 12:09 UTC | 5.9 | 33.12° N, 115.64° W 1km | US | VIII (11) | 0 | 0 | |
| 13 | 1981-09-04 15:50 UTC | 5.8 | 33.9° N, 119.03° W 15km | US | VI (13 k) | 0 | 0 | |
| 14 | 1983-05-02 23:42 UTC | 6.3 | 36.22° N, 120.3° W 10km | US | IX (29) | 0 | 0 | |
| 15 | 1983-05-02 23:46 UTC | 5.7 | 36.23° N, 120.29° W 8km | US | VIII (1 k) | 0 | 0 | |
| 16 | 1983-07-09 07:40 UTC | 5.1 | 36.17° N, 120.37° W 1km | US | VII (10 k) | 0 | 0 | |
| 17 | 1983-07-22 02:39 UTC | 5.7 | 36.2° N, 120.34° W 7km | US | VII (1 k) | 0 | 0 | |
| 18 | 1985-08-04 12:01 UTC | 6.1 | 36.14° N, 120.11° W 15km | US | IX (713) | 0 | 0 | |
| 19 | 1986-07-08 09:20 UTC | 6 | 33.97° N, 116.78° W 12km | US | VIII (8 k) | 0 | 0 | landslide |
| 20 | 1986-07-13 13:47 UTC | 5.8 | 33.05° N, 117.85° W 2km | US | V (9,528 k) | 0 | 1 | landslide |
| 21 | 1987-10-01 14:42 UTC | 5.9 | 34.06° N, 118.13° W 14km | US | VIII (20 k) | 8 | 8 | |
| 22 | 1987-10-04 10:59 UTC | 5.2 | 34.02° N, 118.14° W 11km | US | VII (453 k) | 0 | 1 | |
| 23 | 1987-11-24 01:54 UTC | 6 | 33.22° N, 115.79° W 15km | US | VIII (250) | 0 | 2 | |
| 24 | 1987-11-24 13:15 UTC | 6.5 | 33.07° N, 115.95° W 2km | US | IX (599) | 0 | 0 | |
| 25 | 1988-02-11 15:25 UTC | 4.8 | 34.08° N, 118.05° W 12km | US | VII (11 k) | 0 | 1 | |
| 26 | 1988-12-03 11:38 UTC | 5 | 34.15° N, 118.13° W 13km | US | VI (1,090 k) | 0 | 0 | |
| 27 | 1989-01-19 06:53 UTC | 5.2 | 33.91° N, 118.7° W 9km | US | VI (14 k) | 0 | 0 | |
| 28 | 1990-02-28 23:43 UTC | 5.7 | 34.14° N, 117.75° W 3km | US | VIII (12 k) | 0 | 0 | |
| 29 | 1991-06-28 14:43 UTC | 5.6 | 34.24° N, 118.01° W 11km | US | VII (8 k) | 1 | 1 | |
| 30 | 1992-04-23 04:50 UTC | 6.2 | 33.87° N, 116.52° W 4km | US | VIII (16 k) | 0 | 0 | |
| 31 | 1992-06-28 11:57 UTC | 7.3 | 34.18° N, 116.53° W 11km | US | IX (2 k) | 1 | 1 | |
| 32 | 1992-06-28 15:05 UTC | 6.5 | 34.29° N, 116.82° W 12km | US | IX (2 k) | 0 | 0 | landslide |
| 33 | 1992-06-29 10:14 UTC | 5.7 | 36.77° N, 116.32° W 11km | US | VIII (127) | 0 | 0 | |
| 34 | 1992-06-29 16:01 UTC | 5.5 | 33.82° N, 116.44° W 15km | US | VIII (8 k) | 0 | 0 | |
| 35 | 1992-07-11 18:14 UTC | 5.7 | 34.96° N, 118.19° W 15km | US | VIII (568) | 0 | 0 | |
| 36 | 1992-11-27 16:00 UTC | 5.6 | 34.23° N, 117.01° W 5km | US | VII (4 k) | 0 | 0 | |
| 37 | 1993-05-17 23:20 UTC | 6.1 | 37.15° N, 117.82° W 10km | US | VIII (6) | 0 | 0 | |
| 38 | 1994-01-17 12:30 UTC | 6.7 | 34.16° N, 118.58° W 11km | US | IX (181 k) | 33 | 33 | landslide, liquefaction |
| 39 | 1994-01-17 23:33 UTC | 5.8 | 34.27° N, 118.79° W 8km | US | VIII (70 k) | 0 | 0 | |
| 40 | 1994-01-18 00:43 UTC | 5.5 | 34.26° N, 118.89° W 17km | US | VII (97 k) | 0 | 0 | |
| 41 | 1995-09-20 23:27 UTC | 5.5 | 35.63° N, 117.73° W 15km | US | VIII (852) | 0 | 0 | |
| 42 | 1999-10-16 09:46 UTC | 7.1 | 34.52° N, 116.44° W 5km | US | IX (17 k) | 0 | 0 | |
| 43 | 1999-10-16 09:59 UTC | 5.8 | 34.56° N, 116.79° W 9km | US | VIII (19) | 0 | 0 | |
| 44 | 1999-10-16 12:57 UTC | 5.7 | 34.27° N, 116.23° W 12km | US | VIII (201) | 0 | 0 | |
| 45 | 2001-12-08 23:36 UTC | 5.7 | 32.05° N, 114.9° W 9km | MX | VIII (72) | 0 | 0 | |
| 46 | 2002-02-22 19:32 UTC | 5.5 | 32.38° N, 115.19° W 9km | MX | VIII (8 k) | 0 | 0 | |
| 47 | 2003-12-22 19:15 UTC | 6.6 | 35.62° N, 121.07° W 16km | US | VII (213) | 2 | 2 | landslide, liquefaction |
| 48 | 2004-09-28 17:15 UTC | 6 | 35.75° N, 120.32° W 5km | US | VII (160) | 0 | 0 | |
| 49 | 2005-06-16 20:53 UTC | 4.9 | 33.95° N, 117.05° W 18km | US | VI (63 k) | 0 | 0 | |
| MMI | City | Population |
|---|---|---|
| IV | Irvine | 189k |
| IV | San Joaquin Hills | 3k |
| IV | Costa Mesa | 109k |
| IV | Newport Beach | 79k |
| IV | Santa Ana | 343k |
| III | Garden Grove | 167k |
| III | Fountain Valley | 56k |
| III | Westminster | 90k |
| III | Tustin | 69k |
| III | Stanton | 38k |
| III | Huntington Beach | 196k |
| III | Orange | 129k |
| III | Anaheim | 328k |
| III | Cypress | 47k |
| II | Los Alamitos | 12k |
| II | North Tustin | 24k |
| II | Fullerton | 135k |
| II | Aliso Viejo | 41k |
| II | Hawaiian Gardens | 16k |
| II | La Palma | 16k |
| II | Buena Park | 79k |
| II | Rossmoor | 11k |
| II | Laguna Beach | 24k |
| II | Villa Park | 6k |
| II | Laguna Woods | 20k |
| II | Placentia | 49k |
| II | Lake Forest | 77k |
| II | Seal Beach | 24k |
| II | Artesia | 17k |
| II | Cerritos | 53k |
| II | Laguna Hills | 31k |
| II | Foothill Ranch | 12k |
| II | Norwalk | 109k |
| II | Mission Viejo | 96k |
| II | Portola Hills | 9k |
| II | La Mirada | 50k |
| II | Lakewood | 82k |
| II | Bellflower | 76k |
| II | Santa Fe Springs | 16k |
| II | Pico Rivera | 66k |
| II | Yorba Linda | 65k |
| II | Downey | 112k |
| II | East La Mirada | 10k |
| II | La Habra | 60k |
| II | Chino Hills | 67k |
| I | Brea | 40k |
| I | Laguna Niguel | 66k |
| I | Paramount | 57k |
| I | South Whittier | 59k |
| I | Whittier | 86k |
| I | Bell Gardens | 46k |
| I | Montebello | 64k |
| I | Signal Hill | 11k |
| I | Trabuco Canyon | 3k |
| I | Long Beach | 483k |
| I | East Compton | 10k |
| I | La Habra Heights | 6k |
| I | Las Flores | 6k |
| I | San Clemente | 62k |
| I | Dana Point | 36k |
| I | Rancho Santa Margarita | 51k |
| I | Commerce | 14k |
| I | Hacienda Heights | 54k |
| I | Cudahy | 26k |
| I | Lynwood | 72k |
| I | La Puente | 43k |
| I | San Juan Capistrano | 35k |
| I | Bell | 38k |
| I | El Monte | 125k |
| I | Maywood | 29k |
| I | South El Monte | 22k |
| I | South Gate | 100k |
| I | West Puente Valley | 24k |
| I | Baldwin Park | 81k |
| I | Mayflower Village | 5k |
| I | Monterey Park | 63k |
| I | North El Monte | 4k |
| I | Rosemead | 56k |
| I | South Pasadena | 25k |
| I | South San Gabriel | 8k |
| I | Temple City | 38k |
| I | Alhambra | 88k |
| I | Arcadia | 57k |
| I | Avocado Heights | 16k |
| I | Belvedere | 2k |
| I | Covina | 49k |
| I | East Los Angeles | 125k |
| I | East Pasadena | 6k |
| I | East San Gabriel | 16k |
| I | Irwindale | 2k |
| I | Los Serranos | 7k |
| I | San Gabriel | 42k |
| I | San Marino | 13k |
| I | West Covina | 110k |
| I | Fillmore | 15k |
| I | Agoura | 21k |
| I | Agoura Hills | 22k |
| I | Alondra Park | 8k |
| I | Alpine | 15k |
| I | Altadena | 43k |
| I | Avalon | 3k |
| I | Azusa | 48k |
| I | Banning | 30k |
| I | Beaumont | 19k |
| I | Beverly Hills | 35k |
| I | Big Bear City | 6k |
| I | Big Bear Lake | 6k |
| I | Bloomington | 22k |
| I | Bonsall | 5k |
| I | Bostonia | 16k |
| I | Bradbury | 1k |
| I | Burbank | 105k |
| I | Cabazon | 3k |
| I | Calabasas | 21k |
| I | Calimesa | 8k |
| I | Camarillo | 63k |
| I | Canyon Lake | 12k |
| I | Carlsbad | 78k |
| I | Carson | 96k |
| I | Casa Conejo | 3k |
| I | Charter Oak | 9k |
| I | Cherry Valley | 6k |
| I | Chino | 75k |
| I | Citrus | 11k |
| I | Claremont | 35k |
| I | Colton | 52k |
| I | Compton | 97k |
| I | Corona | 153k |
| I | Coto De Caza | 19k |
| I | Crest | 3k |
| I | Crestline | 11k |
| I | Culver City | 40k |
| I | Del Mar | 4k |
| I | Del Aire | 10k |
| I | Diamond Bar | 59k |
| I | Duarte | 23k |
| I | East Hemet | 14k |
| I | El Cerrito | 5k |
| I | El Segundo | 17k |
| I | Encinitas | 58k |
| I | Escondido | 137k |
| I | Fallbrook | 34k |
| I | Fontana | 169k |
| I | Gardena | 61k |
| I | Glen Avon | 16k |
| I | Glendale | 195k |
| I | Glendora | 52k |
| I | Grand Terrace | 13k |
| I | Granite Hills | 3k |
| I | Harbison Canyon | 5k |
| I | Hawthorne | 87k |
| I | Hemet | 69k |
| I | Hermosa Beach | 20k |
| I | Hesperia | 74k |
| I | Hidden Hills | 2k |
| I | Hidden Meadows | 4k |
| I | Highgrove | 4k |
| I | Highland | 51k |
| I | Hollywood | 168k |
| I | Home Gardens | 11k |
| I | Homeland | 4k |
| I | Huntington Park | 64k |
| I | Inglewood | 116k |
| I | Julian | 2k |
| I | La Canada Flintridge | 21k |
| I | La Verne | 34k |
| I | Ladera Heights | 7k |
| I | Lake Arrowhead | 11k |
| I | Lake Elsinore | 41k |
| I | Lake San Marcos | 4k |
| I | Lakeland Village | 6k |
| I | Lakeside | 19k |
| I | Lakeview | 2k |
| I | Las Flores | 6k |
| I | Lawndale | 33k |
| I | Lennox | 23k |
| I | Loma Linda | 21k |
| I | Lomita | 21k |
| I | Los Angeles | 3,695k |
| I | Malibu | 13k |
| I | Malibu Beach | 14k |
| I | Manhattan Beach | 37k |
| I | Marina del Rey | 9k |
| I | Mentone | 9k |
| I | Mira Loma | 19k |
| I | Monrovia | 38k |
| I | Montclair | 36k |
| I | Moorpark | 37k |
| I | Moreno Valley | 169k |
| I | Murrieta | 89k |
| I | Murrieta Hot Springs | 4k |
| I | Muscoy | 10k |
| I | Norco | 27k |
| I | North Glendale | 203k |
| I | Nuevo | 5k |
| I | Oak Park | 2k |
| I | Oceanside | 161k |
| I | Ontario | 173k |
| I | Palos Verdes Estates | 14k |
| I | Pasadena | 145k |
| I | Pedley | 13k |
| I | Perris | 46k |
| I | Piru | 1k |
| I | Pomona | 156k |
| I | Poway | 48k |
| I | Quail Valley | 2k |
| I | Rainbow | 2k |
| I | Ramona | 17k |
| I | Rancho Cucamonga | 169k |
| I | Rancho Palos Verdes | 43k |
| I | Rancho Santa Fe | 3k |
| I | Redlands | 70k |
| I | Redondo Beach | 68k |
| I | Rialto | 102k |
| I | Riverside | 298k |
| I | Rolling Hills | 2k |
| I | Rolling Hills Estates | 8k |
| I | Romoland | 3k |
| I | Rowland Heights | 52k |
| I | Rubidoux | 32k |
| I | Running Springs | 6k |
| I | San Antonio Heights | 3k |
| I | San Bernardino | 202k |
| I | San Diego Country Estates | 11k |
| I | San Dimas | 36k |
| I | San Fernando | 25k |
| I | San Jacinto | 29k |
| I | San Marcos | 70k |
| I | Santa Clarita | 169k |
| I | Santa Monica | 88k |
| I | Santa Paula | 29k |
| I | Santee | 53k |
| I | Sedco Hills | 3k |
| I | Sierra Madre | 11k |
| I | Simi Valley | 119k |
| I | Solana Beach | 13k |
| I | South San Jose Hills | 22k |
| I | Sun City | 20k |
| I | Sunnyslope | 5k |
| I | Temecula | 85k |
| I | Thousand Oaks | 128k |
| I | Torrance | 145k |
| I | Upland | 74k |
| I | Val Verde | 1k |
| I | Valinda | 24k |
| I | Valle Vista | 12k |
| I | Valley Center | 10k |
| I | Vista | 93k |
| I | Walnut | 32k |
| I | Walnut Park | 17k |
| I | West Athens | 9k |
| I | West Carson | 22k |
| I | West Compton | 6k |
| I | West Hollywood | 37k |
| I | Westlake Village | 9k |
| I | Westmont | 32k |
| I | Westwood | 2k |
| I | Wildomar | 16k |
| I | Willowbrook | 35k |
| I | Winchester | 2k |
| I | Winter Gardens | 21k |
| I | Woodcrest | 9k |
| I | Wrightwood | 4k |
| I | Yucaipa | 50k |
(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.
