PAGER - M 4.3 - 98.2 km (61.0 mi) S of Yuma, AZ

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, July 18th, 2011 at 20:40:33 UTC (13:40:33 local)Location: 31.8° N, 114.7° WDepth: 10kmEvent Id: CI15020052Alert Version: 1Created: 3 days, 18 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 Exposure1,393k*31k78200000
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 a mix of vulnerable and earthquake resistant construction.

Historical Earthquakes (with MMI)

Date (UTC)Dist (km)MagMax MMI (#)Shaking Deaths
1975-07-082986.5IX (20)0
1977-11-213356VII (4)0
1980-06-09546.3IX (336)1

Recent earthquakes in this area have caused secondary hazards such as landslides that might have contributed to losses.

Selected Cities Exposedfrom GeoNames Database of Cities with 1,000 or more residents.
MMICityPopulation
IIEstacion Coahuila8k
IMexicali597k
ISan Luis Rio Colorado139k
IYuma84k
IEl Centro38k
ICalexico36k
IFortuna Foothills31k
IBrawley22k
ISan Luis22k
IGuadalupe Victoria18k
IImperial10k

(k = x1,000)

Historical Events Map
Nearby Events in the EXPO-CAT Earthquake Catalog
#Date/TimeMagLat, Lon, DepthCountryMax MMI (Exposed)DeathsSecondary Effects
ShakingTotal
11975-07-08
09:37 UTC
6.529.36° N, 113.45° W
2km
MXIX (20)00
21977-11-21
02:50 UTC
629.16° N, 113.04° W
3km
MXVII (4)00
31978-05-05
21:03 UTC
5.532.22° N, 115.32° W
5km
MXVIII (97)00
41979-03-15
21:07 UTC
5.534.2° N, 116.53° W
15km
USVII (744)00
51979-10-15
23:17 UTC
6.532.82° N, 115.64° W
9km
USIX (3 k)00
61979-10-16
05:49 UTC
5.633.02° N, 115.57° W
5km
USVIII (611)00
71979-10-16
06:19 UTC
5.132.73° N, 115.76° W
10km
USVII (77)00
81979-10-16
06:58 UTC
5.632.95° N, 115.62° W
10km
USVIII (287)00
91979-10-16
23:16 UTC
5.532.92° N, 115.55° W
4km
USVIII (40)00
101980-02-25
10:47 UTC
5.633.52° N, 116.55° W
6km
USVII (847)00
111980-06-09
03:28 UTC
6.332.27° N, 114.91° W
5km
MXIX (336)11
121981-04-26
12:09 UTC
5.933.12° N, 115.64° W
1km
USVIII (11)00
131986-07-08
09:20 UTC
633.97° N, 116.78° W
12km
USVIII (8 k)00landslide
141986-07-13
13:47 UTC
5.833.05° N, 117.85° W
2km
USV (9,528 k)01landslide
151987-11-24
01:54 UTC
633.22° N, 115.79° W
15km
USVIII (250)02
161987-11-24
13:15 UTC
6.533.07° N, 115.95° W
2km
USIX (599)00
171990-02-28
23:43 UTC
5.734.14° N, 117.75° W
3km
USVIII (12 k)00
181992-04-23
04:50 UTC
6.233.87° N, 116.52° W
4km
USVIII (16 k)00
191992-06-28
11:57 UTC
7.334.18° N, 116.53° W
11km
USIX (2 k)11
201992-06-28
15:05 UTC
6.534.29° N, 116.82° W
12km
USIX (2 k)00landslide
211992-06-29
16:01 UTC
5.533.82° N, 116.44° W
15km
USVIII (8 k)00
221992-11-27
16:00 UTC
5.634.23° N, 117.01° W
5km
USVII (4 k)00
231999-10-16
09:46 UTC
7.134.52° N, 116.44° W
5km
USIX (17 k)00
241999-10-16
09:59 UTC
5.834.56° N, 116.79° W
9km
USVIII (19)00
251999-10-16
12:57 UTC
5.734.27° N, 116.23° W
12km
USVIII (201)00
262001-12-08
23:36 UTC
5.732.05° N, 114.9° W
9km
MXVIII (72)00
272002-02-22
19:32 UTC
5.532.38° N, 115.19° W
9km
MXVIII (8 k)00
282005-06-16
20:53 UTC
4.933.95° N, 117.05° W
18km
USVI (63 k)00

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.