PAGER - M 5.9 - 54.7 km (34.0 mi) W of Petrolia, 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, February 4th, 2010 at 20:20:22 UTC (12:20:22 local)Location: 40.4° N, 124.9° WDepth: 20kmEvent Id: NC71348851Alert Version: 2Created: 46 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)
 
73
1 to 9 (YELLOW)
 
27
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)
 
65
1 to 10 million (YELLOW)
 
30
10 to 100 million (YELLOW)
 
4
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 Exposure575k*359k*110k15k00000
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
1980-11-08937.3IX (17k)0
1991-07-132116.8V (52k)0
1993-09-213216VIII (26)1

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
VFortuna11k
VFerndale1k
IVRio Dell3k
IVHydesville1k
IVBayview3k
IVHumboldt Hill3k
IVEureka26k
IIRedding92k
IChico71k
IYuba City52k
IParadise27k

(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, 121.39° W
9km
USVIII (13)00
21980-11-08
10:27 UTC
7.341.11° N, 124.3° W
17km
USIX (17 k)00
31983-08-24
13:36 UTC
6.240.29° N, 124.63° W
22km
USVII (2 k)00
41987-07-31
23:56 UTC
640.39° N, 124.2° W
18km
USVIII (3)00
51991-07-13
02:50 UTC
6.842.2° N, 125.77° W
11km
USV (52 k)00
61991-08-17
19:29 UTC
6.140.25° N, 124.12° W
12km
USIX (176)00
71991-08-17
22:17 UTC
741.75° N, 125.57° W
14km
USV (155 k)00
81992-03-08
03:43 UTC
5.440.26° N, 123.97° W
14km
USVII (43)00
91992-04-25
18:06 UTC
7.240.34° N, 124.09° W
15km
USIX (2 k)00landslide, liquefaction, tsunami
101992-04-26
07:41 UTC
6.540.51° N, 124.31° W
20km
USIX (1 k)00
111992-04-26
11:18 UTC
6.640.42° N, 124.42° W
22km
USIX (33)00
121993-09-21
03:28 UTC
642.31° N, 122° W
11km
USVIII (26)11landslide
131993-09-21
05:45 UTC
5.942.35° N, 122.09° W
35km
USVII (5 k)00
141994-09-01
15:15 UTC
740.38° N, 125.78° W
11km
USV (134 k)00
151994-12-26
14:10 UTC
5.540.71° N, 124.04° W
26km
USVII (83 k)00
161997-01-22
07:17 UTC
5.740.21° N, 124.29° W
15km
USVII (132)00
172000-09-03
08:36 UTC
538.38° N, 122.41° W
10km
USVI (79 k)00
182005-06-15
02:50 UTC
7.241.23° N, 125.98° W
11km
USV (71 k)00
MMICityPopulation
VFortuna11k
VFerndale1k
IVRio Dell3k
IVHydesville1k
IVBayview3k
IVHumboldt Hill3k
IVPine Hills3k
IVCutten4k
IVMyrtletown5k
IVArcata17k
IVEureka26k
IVMcKinleyville15k
IVBlue Lake1k
IVRedway1k
IIIWillow Creek2k
IIIFort Bragg7k
IIILaytonville1k
IIIHayfork2k
IIICovelo1k
IIWeaverville4k
IIWillits5k
IICrescent City7k
IILewiston1k
IIUkiah16k
IIBrookings6k
IIHarbor3k
IITalmage1k
IIRedding92k
IIUpper Lake1k
IIAnderson11k
IICentral Valley (historical)4k
IIShasta Lake11k
IICottonwood3k
IIPalo Cedro1k
IIRed Bluff14k
IILakeport5k
ICorning7k
IKelseyville3k
IMount Shasta4k
IOrland6k
ILos Molinos2k
INice3k
IMontague1k
ICloverdale7k
ILucerne3k
IWillows6k
IHamilton City2k
IMcCloud1k
IDunsmuir2k
IWeed3k
IClearlake15k
IClearlake Oaks2k
IArbuckle3k
IBiggs2k
IChico71k
ICobb2k
IColusa6k
IConcow1k
IDurham6k
IGridley6k
IHidden Valley Lake5k
ILinda14k
ILive Oak6k
ILower Lake2k
IMagalia12k
IMarysville13k
IOlivehurst12k
IOroville13k
IPalermo6k
IParadise27k
ISouth Oroville8k
ISouth Yuba City15k
ISutter3k
IThermalito6k
ITierra Buena6k
IWheatland3k
IWilliams4k
IYuba City52k
IBurney3k
IShingletown2k
ITulelake1k
IYreka7k

(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.