PAGER - M 4.0 - 3 km ENE of Alamo, 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, September 6th, 2008 at 04:00:15 UTC (21:00:15 local)Location: 37.9° N, 122° WDepth: 16kmEvent Id: NC51207740Alert Version: 1Created: 106 weeks, 6 days 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)
 
100
1 to 9 (YELLOW)0
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)
 
90
1 to 10 million (YELLOW)
 
9
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 Exposure2,353k*5,928k1,171k308k00000
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
1984-11-262925.1V (17k)0
1989-10-18866.9IX (3k)62
2003-12-222636.6VII (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
VDanville43k
VSan Ramon45k
VAlamo18k
VMoraga17k
VDiablo1k
VWalnut Creek65k
IVOakland399k
IIISan Francisco732k
IIStockton290k
IISan Jose895k
ISacramento468k

(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
21978-10-04
16:42 UTC
5.437.39° N, 118.69° W
8km
USVI (598)00
31979-08-06
17:05 UTC
5.737.07° N, 121.6° W
8km
USVIII (152)00
41980-01-24
19:00 UTC
5.837.71° N, 121.73° W
15km
USVII (31 k)11
51980-01-27
02:33 UTC
5.837.74° N, 121.74° W
15km
USVI (371 k)00
61980-05-25
16:33 UTC
6.237.53° N, 118.83° W
11km
USIX (72)00landslide
71980-05-25
16:49 UTC
5.937.55° N, 119.02° W
3km
USVIII (16)00
81980-05-25
19:44 UTC
5.937.38° N, 118.84° W
4km
USVII (2)00landslide
91980-05-25
20:35 UTC
5.937.44° N, 118.96° W
2km
USVI (6 k)00
101980-05-25
20:59 UTC
5.537.59° N, 118.83° W
10km
USVII (660)00
111980-05-26
12:24 UTC
5.637.58° N, 118.9° W
2km
USVII (2 k)00
121980-05-26
18:57 UTC
5.737.56° N, 118.9° W
6km
USVII (2 k)00
131980-05-27
14:50 UTC
5.937.42° N, 118.8° W
1km
USVIII (3)00
141981-09-30
11:53 UTC
5.637.55° N, 118.8° W
15km
USVII (591)00
151983-05-02
23:42 UTC
6.336.22° N, 120.3° W
10km
USIX (29)00
161983-05-02
23:46 UTC
5.736.23° N, 120.29° W
8km
USVIII (1 k)00
171983-07-09
07:40 UTC
5.136.17° N, 120.37° W
1km
USVII (10 k)00
181983-07-22
02:39 UTC
5.736.2° N, 120.34° W
7km
USVII (1 k)00
191983-08-24
13:36 UTC
6.240.29° N, 124.62° W
24km
USVII (2 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
321987-07-31
23:56 UTC
640.39° N, 124.2° W
18km
USVIII (4)00
331988-06-27
18:43 UTC
5.737.13° N, 121.88° W
13km
USVIII (6)00
341989-08-08
08:13 UTC
5.437.13° N, 121.93° W
15km
USVII (4 k)11
351989-10-18
00:04 UTC
6.937.11° N, 121.77° W
11km
USIX (3 k)6263landslide, tsunami
361991-08-17
19:29 UTC
6.140.25° N, 124.11° W
16km
USVIII (255)00
371992-03-08
03:43 UTC
5.440.26° N, 123.97° W
14km
USVII (53)00
381992-04-25
18:06 UTC
7.240.35° N, 124.07° W
19km
USIX (2 k)00landslide, liquefaction, tsunami
391992-04-26
07:41 UTC
6.540.55° N, 124.25° W
31km
USIX (1 k)00
401992-04-26
11:18 UTC
6.640.43° N, 124.41° W
25km
USIX (40)00
411993-05-17
23:20 UTC
6.137.15° N, 117.82° W
10km
USVIII (6)00
421994-09-12
12:23 UTC
5.938.86° N, 119.71° W
5km
USVIII (14 k)00
431994-12-26
14:10 UTC
5.540.71° N, 124.04° W
26km
USVII (85 k)00
441995-12-28
18:27 UTC
5.538.78° N, 119.55° W
5km
USVII (2 k)00
451997-01-22
07:17 UTC
5.740.21° N, 124.29° W
15km
USVII (151)00
461998-08-12
14:10 UTC
5.236.68° N, 121.53° W
9km
USVII (1 k)00
471999-05-15
13:22 UTC
5.537.45° N, 118.8° W
1km
USVII (4)00
482000-09-03
08:36 UTC
538.38° N, 122.41° W
10km
USVI (77 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
MMICityPopulation
VDanville43k
VAlamo18k
VSan Ramon45k
VMoraga17k
VDiablo1k
VWalnut Creek65k
VWaldon6k
VPleasant Hill34k
VLafayette25k
IVOrinda18k
IVDublin39k
IVConcord126k
IVPacheco4k
IVFairview10k
IVCastro Valley63k
IVAshland23k
IVSan Leandro80k
IVClayton11k
IVUnion City70k
IVCherryland16k
IVAlameda70k
IVOakland399k
IVPiedmont11k
IVPleasanton67k
IIIDaly City99k
IIIHayward140k
IIIBay Point22k
IIISan Lorenzo23k
IIISouth San Francisco59k
IIIFremont203k
IIIPittsburg63k
IIIVine Hill3k
IIIAlbany16k
IIISan Francisco732k
IIIBerkeley100k
IIIColma1k
IIIEl Cerrito23k
IIIBrentwood47k
IIIKensington5k
IIIMountain View2k
IIIAntioch106k
IIIBrisbane3k
IIIBroadmoor4k
IIINewark43k
IIIOakley27k
IIIMillbrae20k
IIIUnion City67k
IIIEast Richmond Heights3k
IIIRichmond103k
IIIHercules24k
IIISan Bruno40k
IIISunol1k
IIIBenicia27k
IIIDiscovery Bay12k
IIISuisun City27k
IIIBethel Island2k
IIIPacifica36k
IIIMartinez37k
IIIFoster City29k
IIIRollingwood3k
IIIEl Sobrante14k
IIISan Pablo31k
IIIHillsborough10k
IIIPinole20k
IIITara Hills6k
IIIMontara3k
IIISausalito7k
IIIRodeo9k
IIIEmeryville8k
IIIFairfield106k
IIICrockett3k
IIISan Mateo90k
IIIMoss Beach2k
IIIBurlingame27k
IIILivermore80k
IIIRio Vista7k
IINorth Fair Oaks16k
IIEl Granada7k
IIMill Valley13k
IIVallejo120k
IITracy83k
IIEast Palo Alto33k
IIRedwood City72k
IIVacaville96k
IIStrawberry5k
IIAtherton7k
IICorte Madera9k
IILarkspur12k
IISan Carlos27k
IICountry Club10k
IIBelvedere2k
IIPalo Alto57k
IITiburon9k
IIRoss2k
IILincoln Village4k
IIKentfield7k
IIStockton290k
IIBelmont24k
IIEmerald Lake Hills4k
IIFairfax7k
IIFrench Camp5k
IILathrop13k
IIGreen Valley2k
IISan Rafael55k
IIMenlo Park29k
IIAugust9k
IILexington Hills3k
IIDixon16k
IIKennedy4k
IIMilpitas63k
IISan Anselmo12k
IIWoodacre1k
IIGarden Acres11k
IIMorada4k
IIWoodside5k
IIHalf Moon Bay12k
IILodi63k
IIManteca66k
IISanta Clara102k
IIAmerican Canyon16k
IIBurbank5k
IIWest Menlo Park4k
IISanta Venetia5k
IIStanford13k
IIBolinas1k
IICampbell37k
IISeven Trees2k
IIBuena Vista2k
IIWinters7k
IISan Jose895k
IIRipon14k
IISunnyvale127k
IIMonte Sereno3k
IIDavis66k
IILos Gatos28k
IIGrayson1k
IINapa77k
IIGalt24k
IIPortola Valley4k
IIBoulder Creek4k
IILinden1k
IIBen Lomond3k
IISalida17k
IIPetaluma55k
IICambrian Park3k
IILaguna47k
IILockeford3k
IICupertino51k
IINovato49k
IIDel Rio1k
IIElk Grove95k
IIYountville3k
IIEscalon7k
IIPatterson16k
IIRiverdale Park1k
IIScotts Valley11k
IIWest Sacramento41k
IIFelton1k
IILos Altos Hills8k
ISacramento468k
ICottonwood4k
IEsparto2k
ISaratoga29k
ILoyola4k
IWoodland52k
IModesto216k
IShackelford6k
IFlorin30k
ILos Altos27k
IEast Foothills8k
IWilton5k
IAlum Rock14k
IBystrom5k
IDeer Park1k
IMorgan Hill35k
ICeres40k
ISaint Helena6k
IDay Valley4k
ILa Riviera10k
IEldridge2k
IMountain View68k
IRosemont23k
IEmpire4k
IRiverbank19k
IKeyes6k
IOakdale19k
IHughson7k
ISan Martin6k
IAngwin3k
INewman8k
IInverness1k
IRancho Cordova59k
IFoothill Farms18k
IRohnert Park41k
ICarmichael51k
IRoseland6k
ITurlock68k
IRio Linda11k
IGold River9k
IGustine6k
INorth Highlands46k
ISebastopol8k
IBodega Bay2k
IBoyes Hot Springs7k
ICalistoga5k
ICameron Park16k
ICotati7k
IDeer Park1k
IDelhi12k
IDenair3k
IDiamond Springs6k
IEast Oakdale3k
IEl Dorado Hills25k
IEl Verano4k
IFair Oaks29k
IFolsom68k
IForestville2k
IGraton2k
IGuerneville3k
IHealdsburg11k
IIone8k
IJackson4k
ILos Banos33k
IMonte Rio1k
IOccidental1k
IOrangevale27k
IPlymouth1k
IRancho Calaveras4k
IRancho Murieta6k
ISanta Rosa155k
IShingle Springs3k
ISonoma10k
ISutter Creek2k
ITemelec2k
IValley Springs3k
IWaterford9k
IWindsor25k

(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.