PAGER - M 3.9 - 2.8 km (1.7 mi) SSW of Laguna Niguel, 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?Monday, April 23rd, 2012 at 17:37:02 UTC (10:37:02 local)Location: 33.5° N, 117.7° WDepth: 13kmEvent Id: CI15139337Alert Version: 6Created: 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 | 3,250k* | 15,735k | 164k | 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 |
|---|---|---|---|---|
| 1986-07-13 | 52 | 5.8 | V (10m) | 0 |
| 2003-12-22 | 386 | 6.6 | VII (213) | 2 |
| 1994-01-17 | 107 | 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 |
|---|---|---|
| IV | Laguna Niguel | 66k |
| IV | Dana Point | 36k |
| IV | San Juan Capistrano | 35k |
| III | Laguna Beach | 24k |
| III | Laguna Hills | 31k |
| III | Laguna Woods | 20k |
| III | Santa Ana | 343k |
| II | Anaheim | 328k |
| II | Long Beach | 483k |
| II | Los Angeles | 3,695k |
| I | San Diego | 1,223k |
(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 | 1994-01-17 12:30 UTC | 6.7 | 34.16° N, 118.58° W 11km | US | IX (181 k) | 33 | 33 | landslide, liquefaction |
| 38 | 1994-01-17 23:33 UTC | 5.8 | 34.27° N, 118.79° W 8km | US | VIII (70 k) | 0 | 0 | |
| 39 | 1994-01-18 00:43 UTC | 5.5 | 34.26° N, 118.89° W 17km | US | VII (97 k) | 0 | 0 | |
| 40 | 1995-09-20 23:27 UTC | 5.5 | 35.63° N, 117.73° W 15km | US | VIII (852) | 0 | 0 | |
| 41 | 1999-10-16 09:46 UTC | 7.1 | 34.52° N, 116.44° W 5km | US | IX (17 k) | 0 | 0 | |
| 42 | 1999-10-16 09:59 UTC | 5.8 | 34.56° N, 116.79° W 9km | US | VIII (19) | 0 | 0 | |
| 43 | 1999-10-16 12:57 UTC | 5.7 | 34.27° N, 116.23° W 12km | US | VIII (201) | 0 | 0 | |
| 44 | 2001-12-08 23:36 UTC | 5.7 | 32.05° N, 114.9° W 9km | MX | VIII (72) | 0 | 0 | |
| 45 | 2002-02-22 19:32 UTC | 5.5 | 32.38° N, 115.19° W 9km | MX | VIII (8 k) | 0 | 0 | |
| 46 | 2003-12-22 19:15 UTC | 6.6 | 35.62° N, 121.07° W 16km | US | VII (213) | 2 | 2 | landslide, liquefaction |
| 47 | 2004-09-28 17:15 UTC | 6 | 35.75° N, 120.32° W 5km | US | VII (160) | 0 | 0 | |
| 48 | 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 | Laguna Niguel | 66k |
| IV | Dana Point | 36k |
| IV | San Juan Capistrano | 35k |
| III | Laguna Beach | 24k |
| III | Laguna Hills | 31k |
| III | Laguna Woods | 20k |
| III | Mission Viejo | 96k |
| III | San Clemente | 62k |
| III | Aliso Viejo | 41k |
| III | Lake Forest | 77k |
| III | Las Flores | 6k |
| III | San Joaquin Hills | 3k |
| III | Irvine | 189k |
| III | Foothill Ranch | 12k |
| III | Portola Hills | 9k |
| III | Fountain Valley | 56k |
| III | Newport Beach | 79k |
| III | Rancho Santa Margarita | 51k |
| III | Costa Mesa | 109k |
| III | Santa Ana | 343k |
| III | Tustin | 69k |
| III | Coto De Caza | 19k |
| III | Trabuco Canyon | 3k |
| III | Garden Grove | 167k |
| III | Orange | 129k |
| III | Westminster | 90k |
| III | North Tustin | 24k |
| III | Huntington Beach | 196k |
| III | El Cerrito | 5k |
| III | Villa Park | 6k |
| II | Corona | 153k |
| II | Stanton | 38k |
| II | Placentia | 49k |
| II | Anaheim | 328k |
| II | Lakeland Village | 6k |
| II | Cypress | 47k |
| II | Los Alamitos | 12k |
| II | Murrieta | 89k |
| II | Rossmoor | 11k |
| II | Chino Hills | 67k |
| II | Yorba Linda | 65k |
| II | Fullerton | 135k |
| II | Hawaiian Gardens | 16k |
| II | Buena Park | 79k |
| II | Canyon Lake | 12k |
| II | Sedco Hills | 3k |
| II | Home Gardens | 11k |
| II | La Palma | 16k |
| II | Norco | 27k |
| II | Murrieta Hot Springs | 4k |
| II | Cerritos | 53k |
| II | La Puente | 43k |
| II | Seal Beach | 24k |
| II | Wildomar | 16k |
| II | Avocado Heights | 16k |
| II | East La Mirada | 10k |
| II | La Habra | 60k |
| II | Mira Loma | 19k |
| II | Brea | 40k |
| II | Oceanside | 161k |
| II | Sun City | 20k |
| II | West Puente Valley | 24k |
| II | Rowland Heights | 52k |
| II | South Whittier | 59k |
| II | Hacienda Heights | 54k |
| II | La Habra Heights | 6k |
| II | Moreno Valley | 169k |
| II | Perris | 46k |
| II | Artesia | 17k |
| II | Lakewood | 82k |
| II | Whittier | 86k |
| II | El Monte | 125k |
| II | La Mirada | 50k |
| II | Signal Hill | 11k |
| II | Los Serranos | 7k |
| II | Riverside | 298k |
| II | Romoland | 3k |
| II | South El Monte | 22k |
| II | Winchester | 2k |
| II | North El Monte | 4k |
| II | Rosemead | 56k |
| II | Chino | 75k |
| II | Temple City | 38k |
| II | Arcadia | 57k |
| II | Baldwin Park | 81k |
| II | Nuevo | 5k |
| II | Rancho Cucamonga | 169k |
| II | Valinda | 24k |
| II | East San Gabriel | 16k |
| II | Glen Avon | 16k |
| II | Mayflower Village | 5k |
| II | Santa Fe Springs | 16k |
| II | Carlsbad | 78k |
| II | Fallbrook | 34k |
| II | Loma Linda | 21k |
| II | Long Beach | 483k |
| II | Montebello | 64k |
| II | Pico Rivera | 66k |
| II | South San Gabriel | 8k |
| II | Rainbow | 2k |
| II | Temecula | 85k |
| II | Bellflower | 76k |
| II | Highgrove | 4k |
| II | Lakeview | 2k |
| II | Monterey Park | 63k |
| II | Norwalk | 109k |
| II | San Bernardino | 202k |
| II | South San Jose Hills | 22k |
| II | West Covina | 110k |
| II | Lake Elsinore | 41k |
| II | Rubidoux | 32k |
| II | Grand Terrace | 13k |
| II | Hemet | 69k |
| II | Muscoy | 10k |
| II | Paramount | 57k |
| II | Sunnyslope | 5k |
| II | East Hemet | 14k |
| II | Ontario | 173k |
| II | Walnut | 32k |
| II | Woodcrest | 9k |
| II | San Jacinto | 29k |
| II | Highland | 51k |
| II | Colton | 52k |
| II | East Pasadena | 6k |
| II | Mentone | 9k |
| II | San Antonio Heights | 3k |
| II | Bloomington | 22k |
| II | Downey | 112k |
| II | Monrovia | 38k |
| II | Carson | 96k |
| II | Covina | 49k |
| II | Torrance | 145k |
| II | Quail Valley | 2k |
| II | Redlands | 70k |
| II | San Gabriel | 42k |
| II | Fontana | 169k |
| II | San Marino | 13k |
| II | Alhambra | 88k |
| II | Encinitas | 58k |
| II | Rialto | 102k |
| II | Pedley | 13k |
| II | West Carson | 22k |
| II | Bradbury | 1k |
| II | Redondo Beach | 68k |
| II | Upland | 74k |
| II | Compton | 97k |
| II | Duarte | 23k |
| II | Irwindale | 2k |
| II | Bonsall | 5k |
| II | South Pasadena | 25k |
| II | East Compton | 10k |
| II | Solana Beach | 13k |
| II | West Compton | 6k |
| II | Commerce | 14k |
| II | Hermosa Beach | 20k |
| II | Palos Verdes Estates | 14k |
| II | Sierra Madre | 11k |
| II | Pomona | 156k |
| II | Valle Vista | 12k |
| II | Willowbrook | 35k |
| II | Alondra Park | 8k |
| II | Bell Gardens | 46k |
| II | Gardena | 61k |
| II | Lomita | 21k |
| II | Pasadena | 145k |
| II | Yucaipa | 50k |
| II | East Los Angeles | 125k |
| II | Lawndale | 33k |
| II | Manhattan Beach | 37k |
| II | Escondido | 137k |
| II | Citrus | 11k |
| II | Avalon | 3k |
| II | Bell | 38k |
| II | Charter Oak | 9k |
| II | Cudahy | 26k |
| II | Maywood | 29k |
| II | Montclair | 36k |
| II | Diamond Bar | 59k |
| II | Rolling Hills Estates | 8k |
| II | El Segundo | 17k |
| II | Huntington Park | 64k |
| II | La Verne | 34k |
| II | Rancho Santa Fe | 3k |
| II | Lynwood | 72k |
| II | Azusa | 48k |
| II | Hawthorne | 87k |
| II | Los Angeles | 3,695k |
| II | Marina del Rey | 9k |
| II | Poway | 48k |
| II | West Athens | 9k |
| II | Claremont | 35k |
| II | Del Aire | 10k |
| II | Rolling Hills | 2k |
| II | Walnut Park | 17k |
| II | Altadena | 43k |
| II | Belvedere | 2k |
| II | Homeland | 4k |
| II | South Gate | 100k |
| II | Cabazon | 3k |
| II | Lennox | 23k |
| II | Westmont | 32k |
| II | Rancho Palos Verdes | 43k |
| II | Culver City | 40k |
| II | Ramona | 17k |
| II | Santa Monica | 88k |
| II | San Fernando | 25k |
| II | Inglewood | 116k |
| II | Westwood | 2k |
| II | Banning | 30k |
| II | Crestline | 11k |
| II | Glendora | 52k |
| II | Beverly Hills | 35k |
| II | Calabasas | 21k |
| II | El Cajon | 95k |
| II | Ladera Heights | 7k |
| II | Vista | 93k |
| II | Hollywood | 168k |
| II | San Dimas | 36k |
| II | West Hollywood | 37k |
| II | Bostonia | 16k |
| II | Hidden Meadows | 4k |
| II | Lakeside | 19k |
| II | Valley Center | 10k |
| II | La Canada Flintridge | 21k |
| I | Coronado | 24k |
| I | Glendale | 195k |
| I | Lake Arrowhead | 11k |
| I | Morongo Valley | 2k |
| I | North Glendale | 203k |
| I | Hidden Hills | 2k |
| I | Del Mar | 4k |
| I | Malibu Beach | 14k |
| I | Agoura | 21k |
| I | Burbank | 105k |
| I | Calimesa | 8k |
| I | Lake San Marcos | 4k |
| I | Running Springs | 6k |
| I | Desert Hot Springs | 19k |
| I | La Presa | 35k |
| I | Palm Springs | 43k |
| I | San Marcos | 70k |
| I | Big Bear City | 6k |
| I | Oak Park | 2k |
| I | Westlake Village | 9k |
| I | Lemon Grove | 25k |
| I | Beaumont | 19k |
| I | Casa Conejo | 3k |
| I | Moorpark | 37k |
| I | San Diego | 1,223k |
| I | Simi Valley | 119k |
| I | Thousand Oaks | 128k |
| I | Cherry Valley | 6k |
| I | National City | 62k |
| I | Agoura Hills | 22k |
| I | La Mesa | 54k |
| I | Santee | 53k |
| I | San Diego Country Estates | 11k |
| I | Las Flores | 6k |
| I | Winter Gardens | 21k |
| I | Malibu | 13k |
| I | Rancho San Diego | 28k |
| I | Spring Valley | 26k |
| I | Granite Hills | 3k |
| I | Crest | 3k |
| I | Harbison Canyon | 5k |
| I | Jamul | 8k |
| I | Julian | 2k |
| I | Alpine | 15k |
| I | Big Bear Lake | 6k |
| I | Pine Valley | 2k |
(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.
