PAGER - M 3.1 - 3.5 km (2.2 mi) SE of Signal Hill, 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, August 18th, 2011 at 21:43:49 UTC (14:43:49 local)Location: 33.8° N, 118.1° WDepth: 19kmEvent Id: CI10995205Alert Version: 4Created: 1 hour, 55 minutes after earthquake.
Global Location

Alert Information

Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.
Estimated FatalitiesFatality Alert Level: GREEN
ESTIMATED FATALITY ALERT: GREEN
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 LossesEconomic Alert Level: GREEN
ESTIMATED ECONOMIC ALERT: GREEN
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 Population Exposed to Earthquake Shaking
Estimated Modified Mercalli IntensityIII-IIIIVVVIVIIVIIIIXX
Est. Population Exposure15,709k2,787k178k000000
Perceived ShakingNot FeltWeakLightModerateStrongVery StrongSevereViolentExtreme
Potential Structure DamageResistantnonenonenoneV. LightLightModerateModerate/HeavyHeavyV. Heavy
VulnerablenonenonenoneLightModerateModerate/HeavyHeavyV. HeavyV. Heavy
*Estimated exposure only includes population within calculated shake map area
Population Exposure
Population per ~1 sq. km. from LandScan
Population Exposure Map

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)MagMax MMI (#)Shaking Deaths
1984-11-263955.1V (17k)0
1994-01-17586.7IX (181k)33
2003-12-223376.6VII (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.
MMICityPopulation
IVSignal Hill11k
IIILong Beach483k
IIILos Alamitos12k
IIIRossmoor11k
IIILakewood82k
IIISeal Beach24k
IAnaheim328k
ISanta Ana343k
ILos Angeles3,695k
IRiverside298k
INorth Glendale203k

(k = x1,000)

Historical Events Map
Nearby Events in the EXPO-CAT Earthquake Catalog
#Date/TimeMagLat, Lon, DepthCountryMax MMI (Exposed)DeathsSecondary Effects
ShakingTotal
11973-02-21
14:45 UTC
5.934.06° N, 119.05° W
6km
USVIII (4 k)00
21978-05-05
21:03 UTC
5.532.22° N, 115.32° W
5km
MXVIII (97)00
31978-08-13
22:54 UTC
5.834.39° N, 119.64° W
8km
USVIII (40 k)00
41979-03-15
21:07 UTC
5.534.2° N, 116.53° W
15km
USVII (744)00
51979-10-15
23:17 UTC
6.532.82° N, 115.64° W
9km
USIX (3 k)00
61979-10-16
05:49 UTC
5.633.02° N, 115.57° W
5km
USVIII (611)00
71979-10-16
06:19 UTC
5.132.73° N, 115.76° W
10km
USVII (77)00
81979-10-16
06:58 UTC
5.632.95° N, 115.62° W
10km
USVIII (287)00
91979-10-16
23:16 UTC
5.532.92° N, 115.55° W
4km
USVIII (40)00
101980-02-25
10:47 UTC
5.633.52° N, 116.55° W
6km
USVII (847)00
111980-06-09
03:28 UTC
6.332.27° N, 114.91° W
5km
MXIX (336)11
121981-04-26
12:09 UTC
5.933.12° N, 115.64° W
1km
USVIII (11)00
131981-09-04
15:50 UTC
5.833.9° N, 119.03° W
15km
USVI (13 k)00
141983-05-02
23:42 UTC
6.336.22° N, 120.3° W
10km
USIX (29)00
151983-05-02
23:46 UTC
5.736.23° N, 120.29° W
8km
USVIII (1 k)00
161983-07-09
07:40 UTC
5.136.17° N, 120.37° W
1km
USVII (10 k)00
171983-07-22
02:39 UTC
5.736.2° N, 120.34° W
7km
USVII (1 k)00
181984-11-23
18:08 UTC
5.837.34° N, 118.51° W
15km
USVIII (8 k)00
191984-11-26
16:21 UTC
5.137.29° N, 118.76° W
10km
USV (17 k)00landslide
201985-08-04
12:01 UTC
6.136.14° N, 120.11° W
15km
USIX (713)00
211986-07-08
09:20 UTC
633.97° N, 116.78° W
12km
USVIII (8 k)00landslide
221986-07-13
13:47 UTC
5.833.05° N, 117.85° W
2km
USV (9,528 k)01landslide
231987-10-01
14:42 UTC
5.934.06° N, 118.13° W
14km
USVIII (20 k)88
241987-10-04
10:59 UTC
5.234.02° N, 118.14° W
11km
USVII (453 k)01
251987-11-24
01:54 UTC
633.22° N, 115.79° W
15km
USVIII (250)02
261987-11-24
13:15 UTC
6.533.07° N, 115.95° W
2km
USIX (599)00
271988-02-11
15:25 UTC
4.834.08° N, 118.05° W
12km
USVII (11 k)01
281988-12-03
11:38 UTC
534.15° N, 118.13° W
13km
USVI (1,090 k)00
291989-01-19
06:53 UTC
5.233.91° N, 118.7° W
9km
USVI (14 k)00
301990-02-28
23:43 UTC
5.734.14° N, 117.75° W
3km
USVIII (12 k)00
311991-06-28
14:43 UTC
5.634.24° N, 118.01° W
11km
USVII (8 k)11
321992-04-23
04:50 UTC
6.233.87° N, 116.52° W
4km
USVIII (16 k)00
331992-06-28
11:57 UTC
7.334.18° N, 116.53° W
11km
USIX (2 k)11
341992-06-28
15:05 UTC
6.534.29° N, 116.82° W
12km
USIX (2 k)00landslide
351992-06-29
10:14 UTC
5.736.77° N, 116.32° W
11km
USVIII (127)00
361992-06-29
16:01 UTC
5.533.82° N, 116.44° W
15km
USVIII (8 k)00
371992-07-11
18:14 UTC
5.734.96° N, 118.19° W
15km
USVIII (568)00
381992-11-27
16:00 UTC
5.634.23° N, 117.01° W
5km
USVII (4 k)00
391993-05-17
23:20 UTC
6.137.15° N, 117.82° W
10km
USVIII (6)00
401994-01-17
12:30 UTC
6.734.16° N, 118.58° W
11km
USIX (181 k)3333landslide, liquefaction
411994-01-17
23:33 UTC
5.834.27° N, 118.79° W
8km
USVIII (70 k)00
421994-01-18
00:43 UTC
5.534.26° N, 118.89° W
17km
USVII (97 k)00
431995-09-20
23:27 UTC
5.535.63° N, 117.73° W
15km
USVIII (852)00
441999-10-16
09:46 UTC
7.134.52° N, 116.44° W
5km
USIX (17 k)00
451999-10-16
09:59 UTC
5.834.56° N, 116.79° W
9km
USVIII (19)00
461999-10-16
12:57 UTC
5.734.27° N, 116.23° W
12km
USVIII (201)00
472001-12-08
23:36 UTC
5.732.05° N, 114.9° W
9km
MXVIII (72)00
482002-02-22
19:32 UTC
5.532.38° N, 115.19° W
9km
MXVIII (8 k)00
492003-12-22
19:15 UTC
6.635.62° N, 121.07° W
16km
USVII (213)22landslide, liquefaction
502004-09-28
17:15 UTC
635.75° N, 120.32° W
5km
USVII (160)00
512005-06-16
20:53 UTC
4.933.95° N, 117.05° W
18km
USVI (63 k)00
MMICityPopulation
IVSignal Hill11k
IIILong Beach483k
IIILos Alamitos12k
IIIRossmoor11k
IIILakewood82k
IIISeal Beach24k
IIIArtesia17k
IIIHawaiian Gardens16k
IIIParamount57k
IIICerritos53k
IIIBellflower76k
IIILa Palma16k
IICompton97k
IICypress47k
IINorwalk109k
IIWestminster90k
IIEast Compton10k
IIStanton38k
IICarson96k
IIDowney112k
IIWest Carson22k
IILynwood72k
IIWest Compton6k
IISanta Fe Springs16k
IIBuena Park79k
IILomita21k
IICudahy26k
IIGarden Grove167k
IISouth Gate100k
IIWillowbrook35k
IIFountain Valley56k
IILa Mirada50k
IIBell Gardens46k
IIHuntington Beach196k
IEast La Mirada10k
IVilla Park6k
IBell38k
IGardena61k
IAnaheim328k
ISouth Whittier59k
ITorrance145k
IRolling Hills2k
IWest Athens9k
IChino Hills67k
ICosta Mesa109k
INewport Beach79k
ISanta Ana343k
INorth Tustin24k
IYorba Linda65k
IWalnut Park17k
IPico Rivera66k
IFullerton135k
IOrange129k
IMontebello64k
IPlacentia49k
ITustin69k
IAlondra Park8k
ICommerce14k
IIrvine189k
IHuntington Park64k
IMaywood29k
IRolling Hills Estates8k
IWestmont32k
IEast Los Angeles125k
ILa Habra60k
IBelvedere2k
IBrea40k
ILa Habra Heights6k
ISan Joaquin Hills3k
IFillmore15k
IActon3k
IAdelanto18k
IAgoura21k
IAgoura Hills22k
IAlhambra88k
IAliso Viejo41k
IAltadena43k
IApple Valley64k
IArcadia57k
IAvalon3k
IAvocado Heights16k
IAzusa48k
IBaldwin Park81k
IBeaumont19k
IBeverly Hills35k
IBig Bear Lake6k
IBloomington22k
IBonsall5k
IBradbury1k
IBurbank105k
ICalabasas21k
ICalimesa8k
ICamarillo63k
ICanyon Lake12k
ICarlsbad78k
ICasa Conejo3k
IChannel Islands Beach3k
ICharter Oak9k
ICherry Valley6k
IChino75k
ICitrus11k
IClaremont35k
IColton52k
ICorona153k
ICoto De Caza19k
ICovina49k
ICrestline11k
ICulver City40k
IDana Point36k
IDel Mar4k
IDel Aire10k
IDesert View Highlands2k
IDiamond Bar59k
IDuarte23k
IEast Hemet14k
IEast Pasadena6k
IEast San Gabriel16k
IEl Cerrito5k
IEl Monte125k
IEl Rio6k
IEl Segundo17k
IEncinitas58k
IEscondido137k
IFallbrook34k
IFontana169k
IFoothill Ranch12k
IGlen Avon16k
IGlendale195k
IGlendora52k
IGrand Terrace13k
IHacienda Heights54k
IHawthorne87k
IHemet69k
IHermosa Beach20k
IHesperia74k
IHidden Hills2k
IHidden Meadows4k
IHighgrove4k
IHighland51k
IHollywood168k
IHome Gardens11k
IHomeland4k
IInglewood116k
IIrwindale2k
ILa Canada Flintridge21k
ILa Puente43k
ILa Verne34k
ILadera Heights7k
ILaguna Beach24k
ILaguna Hills31k
ILaguna Niguel66k
ILaguna Woods20k
ILake Arrowhead11k
ILake Elsinore41k
ILake Forest77k
ILake San Marcos4k
ILakeland Village6k
ILakeview2k
ILas Flores6k
ILas Flores6k
ILawndale33k
ILennox23k
ILittlerock1k
ILoma Linda21k
ILos Angeles3,695k
ILos Serranos7k
IMalibu13k
IMalibu Beach14k
IManhattan Beach37k
IMarina del Rey9k
IMayflower Village5k
IMeiners Oaks4k
IMentone9k
IMira Loma19k
IMira Monte7k
IMission Viejo96k
IMonrovia38k
IMontclair36k
IMonterey Park63k
IMoorpark37k
IMoreno Valley169k
IMountain View Acres3k
IMurrieta89k
IMurrieta Hot Springs4k
IMuscoy10k
INorco27k
INorth El Monte4k
INorth Glendale203k
INuevo5k
IOak Park2k
IOak View5k
IOceanside161k
IOjai8k
IOntario173k
IOxnard170k
IOxnard Shores187k
IPalmdale135k
IPalos Verdes Estates14k
IPasadena145k
IPedley13k
IPerris46k
IPiru1k
IPomona156k
IPort Hueneme21k
IPortola Hills9k
IPoway48k
IQuail Valley2k
IRainbow2k
IRancho Cucamonga169k
IRancho Palos Verdes43k
IRancho Santa Fe3k
IRancho Santa Margarita51k
IRedlands70k
IRedondo Beach68k
IRialto102k
IRiverside298k
IRomoland3k
IRosemead56k
IRowland Heights52k
IRubidoux32k
IRunning Springs6k
ISan Antonio Heights3k
ISan Bernardino202k
ISan Clemente62k
ISan Dimas36k
ISan Fernando25k
ISan Gabriel42k
ISan Jacinto29k
ISan Juan Capistrano35k
ISan Marcos70k
ISan Marino13k
ISanta Clarita169k
ISanta Monica88k
ISanta Paula29k
ISedco Hills3k
ISierra Madre11k
ISimi Valley119k
ISolana Beach13k
ISouth El Monte22k
ISouth Pasadena25k
ISouth San Gabriel8k
ISouth San Jose Hills22k
ISun City20k
ISunnyslope5k
ITemecula85k
ITemple City38k
IThousand Oaks128k
ITrabuco Canyon3k
IUpland74k
IVal Verde1k
IValinda24k
IValley Center10k
IVentura97k
IVictorville84k
IVincent15k
IVista93k
IWalnut32k
IWest Covina110k
IWest Hollywood37k
IWest Puente Valley24k
IWestlake Village9k
IWestwood2k
IWhittier86k
IWildomar16k
IWinchester2k
IWoodcrest9k
IWrightwood4k
IYucaipa50k

(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.