Overall Green Earthquake alert in United States on 04 Apr 2020 01:53 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 4.87 in United States on 04 Apr 2020 01:53 UTC

Hazard models

EQ parameters

Shakemap

Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude:	4.9M
Depth:	10.64 Km
Lat/Lon:	33.4933319 , -116.5035019
Event Date:	04 Apr 2020 01:53 UTC 03 Apr 2020 18:53 Local
Exposed Population:	Less than 100 people in MMI VI 4490000 people within 100km
Source:	CALTECH ci39126079
Inserted at:	05 Apr 2020 01:57 UTC
INFORM Coping capacity of the alert score:	2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
CALTECH	0		0
ci39126079	Scaled population (raster)	0
	C1 shakemap	-0.59
	C2 shakemap	0.53
	Country Vulnerability	0
	INFORM_normalised	0.65

Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1303901		0	04 Apr 2020 01:53	4.64M, 10.64km	6.93	N/A (in MMI>=VII)		00:03	CALTECH
1303903		0	04 Apr 2020 01:53	4.87M, 10.64km	6.52	N/A (in MMI>=VII)		1d 00:03	CALTECH

The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.

The episode that has the last updated information.

* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in United States ,of California. The alertlevel for this event is GREEN

Intensity	Population
	<1000 people

Shakemaps Timeline

Shake id #	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	1303901	33.493/-116.504	4.6	10.64	6.93	04 Apr 2020 01:59	00:06	(new episode)
2	1303903	33.493/-116.504	4.9	10.64	6.91	04 Apr 2020 02:11	00:18	(new episode)
3	1303903	33.493/-116.504	4.9	10.64	6.39	04 Apr 2020 02:13	00:20	(upd of #2)
4	1303903	33.493/-116.504	4.9	10.64	6.38	04 Apr 2020 03:21	01:27	(upd of #3)
5	1303903	33.49/-116.506	4.9	10.45	6.51	04 Apr 2020 03:25	01:32	(upd of #4)
6	1303903	33.49/-116.506	4.9	10.45	6.52	04 Apr 2020 14:03	12:10	(upd of #5)
7	1303903	33.49/-116.506	4.9	10.45	6.52	05 Apr 2020 01:57	1d 00:03	(upd of #6)

Affected Provinces

Region Province	Country	Population
California	United States	no people
California	United States	<1000 people
California	United States	460000 people

Affected populated places. Areas of interest

Name	Region Province	Country	City class	Population	Distance
Warner Springs	California	United States	Village	-	26 km
La Quinta	California	United States	Village	24000 people	26 km
Indian Wells	California	United States	Village	3800 people	28 km
Palm Desert	California	United States	Village	41000 people	29 km
Rancho Mirage	California	United States	Village	13000 people	30 km
Palm Desert Country	California	United States	Village	11000 people	33 km
Aguanga	California	United States	Village	-	33 km
Palm Springs	California	United States	Village	43000 people	34 km
Bermuda Dunes	California	United States	Village	6200 people	34 km
Coachella	California	United States	Village	23000 people	37 km
Indio	California	United States	Village	49000 people	37 km
Thermal	California	United States	Village	-	38 km
Cathedral City	California	United States	Village	43000 people	38 km
Oasis	California	United States	Village	-	38 km
Mecca	California	United States	Village	5400 people	41 km
Valle Vista	California	United States	Village	10000 people	46 km
East Hemet	California	United States	Village	15000 people	49 km
Hemet	California	United States	Village	59000 people	51 km
San Jacinto	California	United States	Village	24000 people	53 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name	IATA Code	Elevation (m)	Usage	Runway type	IFR	Runway Length (ft)	Distance
Kelly		219				0	24 km
Lake Riverside Estates		1039				0	27 km
Warner Springs Gliderport		879				0	28 km
Borrego Valley	BXS	158				0	31 km
Eisenhower Medical Center		71				0	32 km
Ward Ranch		762				0	32 km
John F Kennedy Memorial Hospital		unknown				0	34 km
Thermal	TRM	-36	Civ.	Paved	Yes	6800	35 km
Bermuda Dunes	UDD	22	Civ.	Paved	Yes	5000	35 km
Ernst Field		872				0	37 km
Borrego Air Ranch		175				0	40 km
Hunt's Sky Ranch		704				0	46 km
Hemet Valley Hospital Helistop		381				0	51 km
Ocotillo		49				0	51 km
Hemet Ryan	HMT	461	Civ.	Paved	Yes	4300	55 km

Dams

Intensity	Reservoir	Dam Name	River	Year	Distance
	Lake Henshaw	Henshaw	San Luis Rey River	1923	37 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.

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