PAGER - M 5.5 - 6.9 km (4.3 mi) ESE of Westmorland, CA

Alert level does not include impacts from earthquake-related hazards such as tsunamis, landslides, fires or liquefaction.

Earthquake Shaking Alert Level: YELLOW

Download Alert PDF What's this?Sunday, August 26th, 2012 at 20:57:58 UTC (13:57:58 local)Location: 33° N, 115.5° WDepth: 9kmEvent Id: CI15200401Alert Version: 4Created: 1 hour, 31 minutes after earthquake.

Alert Information

Yellow alert level for economic losses. Some damage is possible and the impact should be relatively localized. Estimated economic losses are less than 1% of GDP of the United States. Past events with this alert level have required a local or regional level response. Green alert level for shaking-related fatalities. There is a low likelihood of casualties.

Estimated Fatalities

ESTIMATED FATALITY ALERT: GREEN
ESTIMATED FATALITIES (LEVEL)	Probability (%)
0 (GREEN)	65
1 to 9 (YELLOW)	30
10 to 99 (YELLOW)	4
100 to 999 (ORANGE)	0
1 to 10 thousand (RED)	0
10 to 100 thousand (RED)	0
100 thousand + (RED)	0

Estimated Economic Losses

ESTIMATED ECONOMIC ALERT: YELLOW
ESTIMATED VALUE IN USD (LEVEL)	Probability (%)
0 to 1 million (GREEN)	15
1 to 10 million (YELLOW)	30
10 to 100 million (YELLOW)	34
100 million to 1 billion (ORANGE)	17
1 to 10 billion (RED)	4
10 to 100 billion (RED)	0
100 billion + (RED)	0

Detailed Information

Estimated Population Exposed to Earthquake Shaking
Estimated Modified Mercalli Intensity		I	II-III	IV	V	VI	VII	VIII	IX	X
Est. Population Exposure		---*	1,101k*	689k	85k	3k	25k	0	0	0
Perceived Shaking		Not Felt	Weak	Light	Moderate	Strong	Very Strong	Severe	Violent	Extreme
Potential Structure Damage	Resistant	none	none	none	V. Light	Light	Moderate	Moderate/Heavy	Heavy	V. Heavy
Potential Structure Damage	Vulnerable	none	none	none	Light	Moderate	Moderate/Heavy	Heavy	V. Heavy	V. Heavy

*Estimated exposure only includes population within calculated shake map area

Population Exposure
Population per ~1 sq. km. from LandScan

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)	Mag	Max MMI (#)	Shaking Deaths
1988-02-11	260	4.8	VII (11k)	0
1991-06-28	265	5.6	VII (8k)	1
1994-01-17	307	6.7	IX (181k)	33

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.

MMI	City	Population
VII	Brawley	22k
VII	Westmorland	2k
V	Imperial	10k
V	Calipatria	8k
V	El Centro	38k
V	Holtville	5k
IV	Mexicali	597k
III	Yuma	84k
III	San Luis Rio Colorado	139k
III	Indio	66k
III	Tecate	58k

(k = x1,000)

Nearby Events in the EXPO-CAT Earthquake Catalog
#	Date/Time	Mag	Lat, Lon, Depth	Country	Max MMI (Exposed)	Deaths		Secondary Effects
#	Date/Time	Mag	Lat, Lon, Depth	Country	Max MMI (Exposed)	Shaking	Total	Secondary Effects
1	1973-02-21 14:45 UTC	5.9	34.06° N, 119.05° W 6km	US	VIII (4 k)	0	0
2	1978-05-05 21:03 UTC	5.5	32.22° N, 115.32° W 5km	MX	VIII (97)	0	0
3	1979-03-15 21:07 UTC	5.5	34.2° N, 116.53° W 15km	US	VII (744)	0	0
4	1979-10-15 23:17 UTC	6.5	32.82° N, 115.64° W 9km	US	IX (3 k)	0	0
5	1979-10-16 05:49 UTC	5.6	33.02° N, 115.57° W 5km	US	VIII (611)	0	0
6	1979-10-16 06:19 UTC	5.1	32.73° N, 115.76° W 10km	US	VII (77)	0	0
7	1979-10-16 06:58 UTC	5.6	32.95° N, 115.62° W 10km	US	VIII (287)	0	0
8	1979-10-16 23:16 UTC	5.5	32.92° N, 115.55° W 4km	US	VIII (40)	0	0
9	1980-02-25 10:47 UTC	5.6	33.52° N, 116.55° W 6km	US	VII (847)	0	0
10	1980-06-09 03:28 UTC	6.3	32.27° N, 114.91° W 5km	MX	IX (336)	1	1
11	1981-04-26 12:09 UTC	5.9	33.12° N, 115.64° W 1km	US	VIII (11)	0	0
12	1981-09-04 15:50 UTC	5.8	33.9° N, 119.03° W 15km	US	VI (13 k)	0	0
13	1986-07-08 09:20 UTC	6	33.97° N, 116.78° W 12km	US	VIII (8 k)	0	0	landslide
14	1986-07-13 13:47 UTC	5.8	33.05° N, 117.85° W 2km	US	V (9,528 k)	0	1	landslide
15	1987-10-01 14:42 UTC	5.9	34.06° N, 118.13° W 14km	US	VIII (20 k)	8	8
16	1987-10-04 10:59 UTC	5.2	34.02° N, 118.14° W 11km	US	VII (453 k)	0	1
17	1987-11-24 01:54 UTC	6	33.22° N, 115.79° W 15km	US	VIII (250)	0	2
18	1987-11-24 13:15 UTC	6.5	33.07° N, 115.95° W 2km	US	IX (599)	0	0
19	1988-02-11 15:25 UTC	4.8	34.08° N, 118.05° W 12km	US	VII (11 k)	0	1
20	1988-12-03 11:38 UTC	5	34.15° N, 118.13° W 13km	US	VI (1,090 k)	0	0
21	1989-01-19 06:53 UTC	5.2	33.91° N, 118.7° W 9km	US	VI (14 k)	0	0
22	1990-02-28 23:43 UTC	5.7	34.14° N, 117.75° W 3km	US	VIII (12 k)	0	0
23	1991-06-28 14:43 UTC	5.6	34.24° N, 118.01° W 11km	US	VII (8 k)	1	1
24	1992-04-23 04:50 UTC	6.2	33.87° N, 116.52° W 4km	US	VIII (16 k)	0	0
25	1992-06-28 11:57 UTC	7.3	34.18° N, 116.53° W 11km	US	IX (2 k)	1	1
26	1992-06-28 15:05 UTC	6.5	34.29° N, 116.82° W 12km	US	IX (2 k)	0	0	landslide
27	1992-06-29 16:01 UTC	5.5	33.82° N, 116.44° W 15km	US	VIII (8 k)	0	0
28	1992-07-11 18:14 UTC	5.7	34.96° N, 118.19° W 15km	US	VIII (568)	0	0
29	1992-11-27 16:00 UTC	5.6	34.23° N, 117.01° W 5km	US	VII (4 k)	0	0
30	1994-01-17 12:30 UTC	6.7	34.16° N, 118.58° W 11km	US	IX (181 k)	33	33	landslide, liquefaction
31	1994-01-17 23:33 UTC	5.8	34.27° N, 118.79° W 8km	US	VIII (70 k)	0	0
32	1994-01-18 00:43 UTC	5.5	34.26° N, 118.89° W 17km	US	VII (97 k)	0	0
33	1995-09-20 23:27 UTC	5.5	35.63° N, 117.73° W 15km	US	VIII (852)	0	0
34	1999-10-16 09:46 UTC	7.1	34.52° N, 116.44° W 5km	US	IX (17 k)	0	0
35	1999-10-16 09:59 UTC	5.8	34.56° N, 116.79° W 9km	US	VIII (19)	0	0
36	1999-10-16 12:57 UTC	5.7	34.27° N, 116.23° W 12km	US	VIII (201)	0	0
37	2001-12-08 23:36 UTC	5.7	32.05° N, 114.9° W 9km	MX	VIII (72)	0	0
38	2002-02-22 19:32 UTC	5.5	32.38° N, 115.19° W 9km	MX	VIII (8 k)	0	0
39	2005-06-16 20:53 UTC	4.9	33.95° N, 117.05° W 18km	US	VI (63 k)	0	0

MMI	City	Population
VII	Brawley	22k
VII	Westmorland	2k
V	Imperial	10k
V	Calipatria	8k
V	El Centro	38k
V	Holtville	5k
IV	Heber	3k
IV	Seeley	2k
IV	Niland	1k
IV	Calexico	36k
IV	Salton City	1k
IV	Mexicali	597k
IV	Progreso	5k
IV	Puebla	9k
III	Mecca	7k
III	Tecolots	5k
III	Hermosillo	6k
III	Delta	6k
III	Los Algodones	5k
III	Gadsden	1k
III	Guadalupe Victoria	18k
III	Somerton	9k
III	San Luis	22k
III	Yuma	84k
III	Alberto Oviedo Mota	8k
III	San Luis Rio Colorado	139k
III	Bermuda Dunes	7k
III	Indio	66k
III	Coachella	31k
III	Estacion Coahuila	8k
III	Indian Wells	4k
III	Blythe	22k
III	Palm Desert	49k
III	La Quinta	38k
III	Rancho Mirage	17k
III	Thousand Palms	6k
III	Borrego Springs	3k
III	Tecate	58k
III	Julian	2k
III	Pine Valley	2k
III	Fortuna Foothills	31k
III	Ehrenberg	1k
III	San Diego Country Estates	11k
III	Alpine	15k
III	Palm Springs	43k
II	Cathedral City	53k

(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.