PAGER - M 4.1 - 2.3 km (1.4 mi) SW of Anderson Springs, 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?Wednesday, August 28th, 2013 at 04:43:05 UTC (21:43:05 local)Location: 38.8° N, 122.7° WDepth: 1kmEvent Id: NC72057971Alert Version: 3Created: 17 minutes, 24 seconds 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 Exposure2,419k28k1k000000
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
1984-11-263835.1V (17k)0
2003-12-223786.6VII (213)2
1989-10-182016.9IX (3k)62

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
IVCobb2k
IIIMiddletown1k
IIHidden Valley Lake6k
IILower Lake1k
IIClearlake15k
IIHealdsburg11k
ISacramento466k
ISanta Rosa168k
IConcord122k
IVallejo116k
IFairfield105k

(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
21976-11-26
11:19 UTC
6.741.32° N, 125.77° W
0km
USV (76 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
151980-11-08
10:27 UTC
7.341.11° N, 124.3° W
17km
USIX (16 k)00
161981-09-30
11:53 UTC
5.637.55° N, 118.8° W
15km
USVII (591)00
171983-05-02
23:42 UTC
6.336.22° N, 120.3° W
10km
USIX (29)00
181983-05-02
23:46 UTC
5.736.23° N, 120.29° W
8km
USVIII (1 k)00
191983-07-09
07:40 UTC
5.136.17° N, 120.37° W
1km
USVII (10 k)00
201983-07-22
02:39 UTC
5.736.2° N, 120.34° W
7km
USVII (1 k)00
211983-08-24
13:36 UTC
6.240.29° N, 124.62° W
24km
USVII (2 k)00
221984-04-24
21:15 UTC
6.237.31° N, 121.71° W
9km
USIX (1)00
231984-11-23
19:12 UTC
5.537.44° N, 118.64° W
0km
USVII (381)00
241984-11-26
16:21 UTC
5.137.29° N, 118.76° W
10km
USV (17 k)00landslide
251985-08-04
12:01 UTC
6.136.14° N, 120.11° W
15km
USIX (713)00
261986-01-26
19:20 UTC
5.436.75° N, 121.36° W
6km
USVII (2 k)00
271986-03-31
11:55 UTC
5.637.53° N, 121.59° W
6km
USVII (117)00
281986-07-20
14:29 UTC
5.837.5° N, 118.45° W
15km
USVIII (9)00
291986-07-21
14:42 UTC
6.237.5° N, 118.44° W
10km
USVIII (375)00
301986-07-21
22:07 UTC
5.437.64° N, 118.49° W
6km
USVII (15)00
311987-07-31
23:56 UTC
640.39° N, 124.2° W
18km
USVIII (4)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
381992-04-26
07:41 UTC
6.540.55° N, 124.25° W
31km
USIX (1 k)00
391992-04-26
11:18 UTC
6.640.43° N, 124.41° W
25km
USIX (40)00
401993-09-21
03:28 UTC
642.31° N, 122° W
9km
USVIII (24)11landslide
411994-09-01
15:15 UTC
740.38° N, 125.78° W
10km
USV (134 k)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
441995-02-19
04:03 UTC
6.640.53° N, 125.58° W
20km
USV (97 k)00
451995-12-28
18:27 UTC
5.538.78° N, 119.55° W
5km
USVII (2 k)00
461997-01-22
07:17 UTC
5.740.21° N, 124.29° W
15km
USVII (151)00
471998-08-12
14:10 UTC
5.236.68° N, 121.53° W
9km
USVII (1 k)00
481999-05-15
13:22 UTC
5.537.45° N, 118.8° W
1km
USVII (4)00
492000-09-03
08:36 UTC
538.38° N, 122.41° W
10km
USVI (77 k)00
502003-12-22
19:15 UTC
6.635.62° N, 121.07° W
16km
USVII (213)22landslide, liquefaction
512004-09-28
17:15 UTC
635.75° N, 120.32° W
5km
USVII (160)00
522005-06-15
02:50 UTC
7.241.2° N, 125.98° W
10km
USV (66 k)00
MMICityPopulation
IVCobb2k
IIIMiddletown1k
IIHidden Valley Lake6k
IILower Lake1k
IIClearlake15k
IIHealdsburg11k
IKelseyville3k
IWindsor27k
ICalistoga5k
IVine Hill4k
IAllendale2k
IAmerican Canyon19k
IAngwin3k
IAntioch102k
IArbuckle3k
IBay Point22k
IBay Point21k
IBenicia27k
IBethel Island2k
IBiggs2k
IBodega Bay1k
IBoonville1k
IBoyes Hot Springs7k
IBrooktrails3k
IClayton11k
IClearlake Oaks2k
ICloverdale9k
IColusa6k
IConcord122k
ICotati7k
ICottonwood4k
ICrockett3k
IDavis66k
IDeer Park1k
IDixon18k
IDunnigan1k
IEast Richmond Heights3k
IEl Sobrante13k
IEl Verano4k
IEldridge1k
IEsparto3k
IFairfax7k
IFairfield105k
IForestville3k
IFort Bragg7k
IGraton2k
IGreen Valley2k
IGridley7k
IGuerneville5k
IHartley3k
IHercules24k
IInverness1k
IKentfield6k
IKenwood1k
IKnightsen2k
ILakeport5k
ILarkspur12k
ILinda18k
ILive Oak8k
ILucerne3k
IMartinez36k
IMarysville12k
IMaxwell1k
IMontalvin3k
IMonte Rio1k
IMountain View2k
INapa77k
INice3k
INorth Richmond4k
INovato52k
IOakley35k
IOccidental1k
IOlivehurst14k
IOroville16k
IPacheco4k
IPalermo5k
IPenngrove3k
IPetaluma58k
IPinole18k
IPittsburg63k
IPleasant Hill33k
IPlumas Lake6k
IRedwood Valley2k
IRichmond104k
IRio Vista7k
IRodeo9k
IRohnert Park41k
IRollingwood3k
IRoseland6k
IRoss2k
ISacramento466k
ISaint Helena6k
ISan Anselmo12k
ISan Pablo29k
ISan Rafael58k
ISanta Rosa168k
ISanta Venetia4k
ISea Ranch1k
ISebastopol7k
ISleepy Hollow2k
ISoda Bay1k
ISonoma11k
ISouth Oroville6k
ISouth Yuba City15k
ISuisun28k
ISutter3k
ITalmage1k
ITara Hills5k
ITemelec1k
IThermalito7k
ITierra Buena6k
IUkiah16k
IUpper Lake1k
IVacaville92k
IVallejo116k
IWalnut Grove2k
IWest Sacramento49k
IWilliams5k
IWillits5k
IWillows6k
IWinters7k
IWoodacre1k
IWoodland55k
IYountville3k
IYuba City65k
IBayview2k
IBlack Point-Green Point1k
ILucas Valley-Marinwood6k
IFetters Hot Springs-Agua Caliente4k
ILagunitas-Forest Knolls2k
ILarkfield-Wikiup9k
INorth Lakeport3k
IOroville East8k

(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.