PAGER - M 4.1 - 15.9 km (9.9 mi) E of Seven Trees, 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?Saturday, January 8th, 2011 at 00:10:16 UTC (16:10:16 local)Location: 37.3° N, 121.7° WDepth: 10kmEvent Id: NC71506865Alert Version: 8Created: 4 days, 4 hours 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 Exposure1,533k*6,351k*463k200000
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
1984-11-262575.1V (17k)0
1989-10-18226.9IX (3k)62
2003-12-221936.6VII (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
IVEast Foothills8k
IVAlum Rock14k
IVSeven Trees2k
IIIMilpitas63k
IIISan Jose895k
IIISanta Clara102k
IIISan Francisco732k
IIIFremont203k
IIOakland399k
IIModesto216k
IStockton290k

(k = x1,000)

Historical Events Map
Nearby Events in the EXPO-CAT Earthquake Catalog
#Date/TimeMagLat, Lon, DepthCountryMax MMI (Exposed)DeathsSecondary Effects
ShakingTotal
11975-08-01
20:20 UTC
5.839.5° N, 121.4° W
6km
USVIII (3 k)00
21978-08-13
22:54 UTC
5.834.39° N, 119.64° W
8km
USVIII (40 k)00
31978-10-04
16:42 UTC
5.437.39° N, 118.69° W
8km
USVI (598)00
41979-08-06
17:05 UTC
5.737.07° N, 121.6° W
8km
USVIII (152)00
51980-01-24
19:00 UTC
5.837.71° N, 121.73° W
15km
USVII (31 k)11
61980-01-27
02:33 UTC
5.837.74° N, 121.74° W
15km
USVI (371 k)00
71980-05-25
16:33 UTC
6.237.53° N, 118.83° W
11km
USIX (72)00landslide
81980-05-25
16:49 UTC
5.937.55° N, 119.02° W
3km
USVIII (16)00
91980-05-25
19:44 UTC
5.937.38° N, 118.84° W
4km
USVII (2)00landslide
101980-05-25
20:35 UTC
5.937.44° N, 118.96° W
2km
USVI (6 k)00
111980-05-25
20:59 UTC
5.537.59° N, 118.83° W
10km
USVII (660)00
121980-05-26
12:24 UTC
5.637.58° N, 118.9° W
2km
USVII (2 k)00
131980-05-26
18:57 UTC
5.737.56° N, 118.9° W
6km
USVII (2 k)00
141980-05-27
14:50 UTC
5.937.42° N, 118.8° W
1km
USVIII (3)00
151981-09-30
11:53 UTC
5.637.55° N, 118.8° W
15km
USVII (591)00
161983-05-02
23:42 UTC
6.336.22° N, 120.3° W
10km
USIX (29)00
171983-05-02
23:46 UTC
5.736.23° N, 120.29° W
8km
USVIII (1 k)00
181983-07-09
07:40 UTC
5.136.17° N, 120.37° W
1km
USVII (10 k)00
191983-07-22
02:39 UTC
5.736.2° N, 120.34° W
7km
USVII (1 k)00
201984-04-24
21:15 UTC
6.237.31° N, 121.71° W
9km
USIX (1)00
211984-11-23
18:08 UTC
5.837.34° N, 118.51° W
15km
USVIII (8 k)00
221984-11-23
19:12 UTC
5.537.44° N, 118.64° W
0km
USVII (381)00
231984-11-26
16:21 UTC
5.137.29° N, 118.76° W
10km
USV (17 k)00landslide
241985-08-04
12:01 UTC
6.136.14° N, 120.11° W
15km
USIX (713)00
251986-01-26
19:20 UTC
5.436.75° N, 121.36° W
6km
USVII (2 k)00
261986-03-31
11:55 UTC
5.637.53° N, 121.59° W
6km
USVII (117)00
271986-07-20
14:29 UTC
5.837.5° N, 118.45° W
15km
USVIII (9)00
281986-07-21
14:42 UTC
6.237.5° N, 118.44° W
10km
USVIII (375)00
291986-07-21
14:51 UTC
5.737.5° N, 118.37° W
9km
USVIII (270)00
301986-07-21
22:07 UTC
5.437.64° N, 118.49° W
6km
USVII (15)00
311986-07-31
07:22 UTC
5.537.46° N, 118.4° W
15km
USVII (210)00
321988-06-27
18:43 UTC
5.737.13° N, 121.88° W
13km
USVIII (6)00
331989-08-08
08:13 UTC
5.437.13° N, 121.93° W
15km
USVII (4 k)11
341989-10-18
00:04 UTC
6.937.11° N, 121.77° W
11km
USIX (3 k)6263landslide, tsunami
351991-08-17
19:29 UTC
6.140.25° N, 124.11° W
16km
USVIII (255)00
361992-03-08
03:43 UTC
5.440.26° N, 123.97° W
14km
USVII (53)00
371992-04-25
18:06 UTC
7.240.35° N, 124.07° W
19km
USIX (2 k)00landslide, liquefaction, tsunami
381993-05-17
23:20 UTC
6.137.15° N, 117.82° W
10km
USVIII (6)00
391994-09-12
12:23 UTC
5.938.86° N, 119.71° W
5km
USVIII (14 k)00
401995-09-20
23:27 UTC
5.535.63° N, 117.73° W
15km
USVIII (852)00
411995-12-28
18:27 UTC
5.538.78° N, 119.55° W
5km
USVII (2 k)00
421997-01-22
07:17 UTC
5.740.21° N, 124.29° W
15km
USVII (151)00
431998-08-12
14:10 UTC
5.236.68° N, 121.53° W
9km
USVII (1 k)00
441999-05-15
13:22 UTC
5.537.45° N, 118.8° W
1km
USVII (4)00
452000-09-03
08:36 UTC
538.38° N, 122.41° W
10km
USVI (77 k)00
462003-12-22
19:15 UTC
6.635.62° N, 121.07° W
16km
USVII (213)22landslide, liquefaction
472004-09-28
17:15 UTC
635.75° N, 120.32° W
5km
USVII (160)00
MMICityPopulation
IVEast Foothills8k
IVAlum Rock14k
IVSeven Trees2k
IIIMilpitas63k
IIISan Jose895k
IIISanta Clara102k
IIIBuena Vista2k
IIIBurbank5k
IIISan Martin6k
IIIMorgan Hill35k
IIISan Francisco732k
IIISan Bruno40k
IIINewark43k
IIISunol1k
IIILos Gatos28k
IIISouth San Francisco59k
IIIFremont203k
IIIBrisbane3k
IIISunnyvale127k
IIICambrian Park3k
IIIGilroy45k
IIIMoss Beach2k
IIIBroadmoor4k
IIIEl Granada7k
IIILexington Hills3k
IIDaly City99k
IIColma1k
IIMillbrae20k
IIPacifica36k
IIScotts Valley11k
IICampbell37k
IIBoulder Creek4k
IISoquel5k
IIEl Cerrito23k
IIUnion City67k
IIMonte Sereno3k
IIRedwood City72k
IIBen Lomond3k
IIInterlaken8k
IIUnion City70k
IIBurlingame27k
IIBelvedere2k
IIFelton1k
IITiburon9k
IIDay Valley4k
IIMontara3k
IISan Leandro80k
IIEast Richmond Heights3k
IIHalf Moon Bay12k
IISan Rafael55k
IICorralitos2k
IILive Oak18k
IIPajaro3k
IIOakland399k
IIPatterson16k
IIFoster City29k
IIAmesti3k
IIEl Sobrante14k
IICapitola10k
IIMoraga17k
IITwin Lakes6k
IIEast Palo Alto33k
IIAlameda70k
IIEmeryville8k
IIGrayson1k
IISanta Cruz55k
IIWatsonville46k
IIRichmond103k
IIRio Del Mar9k
IISan Mateo90k
IITracy83k
IICupertino51k
IISausalito7k
IIAptos10k
IIAromas3k
IISan Carlos27k
IIKensington5k
IISaratoga29k
IIHillsborough10k
IISan Lorenzo23k
IISan Pablo31k
IIStrawberry5k
IINewman8k
IIFreedom6k
IIAlbany16k
IIAshland23k
IICherryland16k
IILas Lomas3k
IISan Juan Bautista2k
IIRollingwood3k
IIBelmont24k
IIPinole20k
IIDublin39k
IIMartinez37k
IIGustine6k
IIOpal Cliffs7k
IIBerkeley100k
IIElkhorn2k
IIMill Valley13k
IIPleasanton67k
IIFairfax7k
IIBolinas1k
IILivermore80k
IICastroville8k
IIEmerald Lake Hills4k
IILarkspur12k
IIMountain View68k
IIHayward140k
IIRiverdale Park1k
IITara Hills6k
IIWoodside5k
IIKentfield7k
IICorte Madera9k
IIPalo Alto57k
IICastro Valley63k
IIFairview10k
IIHercules24k
IINovato49k
IIPiedmont11k
IILathrop13k
IINorth Fair Oaks16k
IIDiscovery Bay12k
IIOrinda18k
IISalida17k
IIMarina17k
IIRipon14k
IIWoodacre1k
IISanta Venetia5k
IIWest Menlo Park4k
IIManteca66k
IIBystrom5k
IIDiablo1k
IIShackelford6k
IICeres40k
IIRoss2k
IISan Anselmo12k
IILoyola4k
IIModesto216k
IIPrunedale23k
IIMenlo Park29k
IIBoronda1k
IILos Altos Hills8k
IIPortola Valley4k
IISalinas149k
IILafayette25k
IIStanford13k
IIKeyes6k
IIBenicia27k
IIDanville43k
IIFrench Camp5k
IILos Banos33k
IITurlock68k
IIDel Rio1k
IIEmpire4k
IIMountain View2k
IICrockett3k
IIAtherton7k
IIBrentwood47k
ILos Altos27k
IRidgemark3k
IAlamo18k
IHughson7k
ISan Ramon45k
IKennedy4k
ICountry Club10k
IDelhi12k
IOakley27k
IRiverbank19k
ISeaside36k
IStockton290k
IBethel Island2k
IChualar2k
IWaldon6k
IEscalon7k
IAugust9k
IHollister37k
IVine Hill3k
ILivingston12k
IDel Rey Oaks2k
IWalnut Creek65k
ILincoln Village4k
IGarden Acres11k
IPleasant Hill34k
IDenair3k
IVallejo120k
IPacheco4k
IWaterford9k
ICarmel Valley Village5k
IGonzales9k
IOakdale19k
IRodeo9k
IMorada4k
IBay Point22k
ICarmel-by-the-Sea4k
IDel Monte Forest4k
IEast Oakdale3k
IAntioch106k
IAtwater30k
IWinton10k
ILinden1k
ISouth Dos Palos2k
IClayton11k
IDos Palos5k
IMonterey30k
IPittsburg63k
IAngels Camp3k
IConcord126k
ICopperopolis3k
IFirebaugh7k
IInverness1k
IJamestown4k
IMerced73k
IPacific Grove15k

(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.