PAGER - M 4.3 - 17.7 km (11.0 mi) N of Morgan 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?Monday, March 30th, 2009 at 17:40:29 UTC (10:40:29 local)Location: 37.3° N, 121.6° WDepth: 7kmEvent Id: NC40234037Alert Version: 1Created: 77 weeks, 4 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 Exposure1,719k*6,252k233k59300000
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
1984-11-262535.1V (17k)0
1989-10-18246.9IX (3k)62
2003-12-221916.6VII (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
IVMorgan Hill35k
IVSeven Trees2k
IIISan Martin6k
IIIGilroy45k
IIISan Jose895k
IIIBurbank5k
IIFremont203k
IISan Francisco732k
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
371993-05-17
23:20 UTC
6.137.15° N, 117.82° W
10km
USVIII (6)00
381994-09-12
12:23 UTC
5.938.86° N, 119.71° W
5km
USVIII (14 k)00
391995-09-20
23:27 UTC
5.535.63° N, 117.73° W
15km
USVIII (852)00
401995-12-28
18:27 UTC
5.538.78° N, 119.55° W
5km
USVII (2 k)00
411997-01-22
07:17 UTC
5.740.21° N, 124.29° W
15km
USVII (151)00
421998-08-12
14:10 UTC
5.236.68° N, 121.53° W
9km
USVII (1 k)00
431999-05-15
13:22 UTC
5.537.45° N, 118.8° W
1km
USVII (4)00
442000-09-03
08:36 UTC
538.38° N, 122.41° W
10km
USVI (77 k)00
452003-12-22
19:15 UTC
6.635.62° N, 121.07° W
16km
USVII (213)22landslide, liquefaction
462004-09-28
17:15 UTC
635.75° N, 120.32° W
5km
USVII (160)00
MMICityPopulation
IVMorgan Hill35k
IVSeven Trees2k
IIISan Martin6k
IIIGilroy45k
IIISan Jose895k
IIIBurbank5k
IIIBuena Vista2k
IIIEast Foothills8k
IIIMilpitas63k
IIISanta Clara102k
IIIAlum Rock14k
IIIInterlaken8k
IIICampbell37k
IIICambrian Park3k
IIILexington Hills3k
IIIDay Valley4k
IIIFoster City29k
IIPortola Valley4k
IIEl Granada7k
IIEmerald Lake Hills4k
IIWatsonville46k
IISan Juan Bautista2k
IIAmesti3k
IICorralitos2k
IILos Gatos28k
IIRedwood City72k
IIAromas3k
IISan Carlos27k
IIHalf Moon Bay12k
IIPajaro3k
IIWoodside5k
IIRio Del Mar9k
IIMonte Sereno3k
IISouth San Francisco59k
IIBoulder Creek4k
IIScotts Valley11k
IIBen Lomond3k
IIPatterson16k
IIAptos10k
IILas Lomas3k
IITiburon9k
IICorte Madera9k
IIBelvedere2k
IIFreedom6k
IIPacifica36k
IISan Mateo90k
IIGrayson1k
IIHillsborough10k
IISoquel5k
IISunol1k
IIBelmont24k
IIBurlingame27k
IIMontara3k
IIMoss Beach2k
IISanta Cruz55k
IILive Oak18k
IIFremont203k
IISan Francisco732k
IIOpal Cliffs7k
IITracy83k
IIDaly City99k
IIFelton1k
IIMillbrae20k
IISunnyvale127k
IITwin Lakes6k
IIAtherton7k
IINewman8k
IINorth Fair Oaks16k
IIColma1k
IIElkhorn2k
IIWest Menlo Park4k
IIGustine6k
IISaratoga29k
IIBroadmoor4k
IIEast Palo Alto33k
IINewark43k
IICapitola10k
IIEmeryville8k
IIHollister37k
IILarkspur12k
IIMountain View68k
IISan Bruno40k
IIStrawberry5k
IIPalo Alto57k
IIStanford13k
IILos Altos Hills8k
IICupertino51k
IIOakland399k
IICastroville8k
IILos Altos27k
IIBrisbane3k
IIMill Valley13k
IIUnion City67k
IIAlbany16k
IIMenlo Park29k
IIRiverdale Park1k
IIPrunedale23k
IIPleasanton67k
IISan Leandro80k
IIDublin39k
IIRidgemark3k
IIUnion City70k
IISan Lorenzo23k
IIAlameda70k
IIAshland23k
IIBoronda1k
IIRipon14k
IIKentfield7k
IILathrop13k
IIPiedmont11k
IISalida17k
IIShackelford6k
IIBerkeley100k
IIBystrom5k
IIManteca66k
IIModesto216k
IISalinas149k
IICeres40k
IISan Rafael55k
IIDiscovery Bay12k
IIMarina17k
IIKeyes6k
IILivermore80k
IILoyola4k
IISausalito7k
IIHayward140k
IISanta Venetia5k
IITurlock68k
IICherryland16k
IISan Anselmo12k
IIRichmond103k
IIFrench Camp5k
IILos Banos33k
IIDel Rio1k
IISan Ramon45k
IIEmpire4k
IIKensington5k
IISan Pablo31k
IIHughson7k
IIRoss2k
IIDelhi12k
IIFairview10k
IISeaside36k
IIDenair3k
IIEl Cerrito23k
IINovato49k
IDel Rey Oaks2k
IEast Richmond Heights3k
IChualar2k
IEscalon7k
IKennedy4k
IStockton290k
ICountry Club10k
IMoraga17k
IBrentwood47k
ILivingston12k
IBethel Island2k
IOakley27k
IPacific Grove15k
IRollingwood3k
ICastro Valley63k
IDanville43k
IGarden Acres11k
ILincoln Village4k
IAugust9k
IRiverbank19k
IFairfax7k
IWaterford9k
IBenicia27k
IGonzales9k
IOakdale19k
IMartinez37k
IEl Sobrante14k
ICarmel-by-the-Sea4k
IDiablo1k
IAtwater30k
IMorada4k
IAlamo18k
IOrinda18k
IWinton10k
ITara Hills6k
IMonterey30k
IPinole20k
ISouth Dos Palos2k
IAntioch106k
IDos Palos5k
ILinden1k
IMountain View2k
IDel Monte Forest4k
IEast Oakdale3k
ILafayette25k
IVine Hill3k
IAngels Camp3k
IBay Point22k
IBolinas1k
ICarmel Valley Village5k
IClayton11k
IColumbia3k
IConcord126k
ICopperopolis3k
ICrockett3k
IFirebaugh7k
IHercules24k
IInverness1k
IJamestown4k
IMendota9k
IMerced73k
IPacheco4k
IPittsburg63k
IPleasant Hill34k
IRodeo9k
ISonora5k
IVallejo120k
IWaldon6k
IWalnut Creek65k
IWoodacre1k

(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.