Overall Green Earthquake alert in United States from 22 Sep 2017 19:50 UTC to 19:50

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 4.65 in United States from 22 Sep 2017 19:50 UTC to 19:50

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:	4.7M
Depth:	4.63 Km
Lat/Lon:	40.4823341 , -124.9404984
Event Date:	22 Sep 2017 19:50 UTC 22 Sep 2017 11:50 Local
Exposed Population:	About 76000 people within 100km
Source:	NCAL SS nc72897031
Inserted at:	22 Sep 2017 19:55 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
NCAL SS	0		0
nc72897031	Scaled population (vector)	0
	C1 shakemap	0
	C2 shakemap	0
	Country Vulnerability	0
	INFORM_normalised	0

Maximum expected impact using different data sources.

Episode Timeline

ID	Date	Mag, Depth	MMI*	Population**	Delay (hh:mm)	Source
1181564	22 Sep 2017 19:50	5.8M, 12km	N/A	No people affected (in 100km)	00:03	NTWC
1181565	22 Sep 2017 19:50	4.65M, 4.63km	N/A	N/A (in MMI>=VII)	00:04	NCAL SS
1181567	22 Sep 2017 19:50	5.56M, 4.63km	1.32	N/A (in MMI>=VII)	00:08	NCAL SS
1181568	22 Sep 2017 19:50	5.7M, 9.09km	3.3	N/A (in MMI>=VII)	00:17	NEIC
1181569	22 Sep 2017 19:50	5.7M, 15.07km	3.03	N/A (in MMI>=VII)	01:13	NEIC
1181658	22 Sep 2017 19:50	5.7M, 11.01km	2.95	N/A (in MMI>=VII)	19:31	NEIC

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 , State of California (population 30,971,320) . The nearest places are Capetown, Port Kenyon, Ferndale, Petrolia, Arlynda Corners, Southport Landing, Waddington, Loleta, Fernbridge, Hacketsville, and Belleview.

Radius	Population
100 km	76000 people
75 km	<1000 people
50 km	no people
20 km	no people
10 km	no people
5 km	no people
2 km	no people

Affected Provinces

Region Province	Country	Population
California	United States	31 million people
Oregon	United States	3 million people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Capetown	California	United States	Village	-	49 km
Port Kenyon	California	United States	Village	-	57 km
Ferndale	California	United States	Village	1400 people	59 km
Petrolia	California	United States	Village	-	59 km
Arlynda Corners	California	United States	Village	-	59 km
Southport Landing	California	United States	Village	-	63 km
Waddington	California	United States	Village	-	63 km
Loleta	California	United States	Village	-	64 km
Fernbridge	California	United States	Village	-	64 km
Hacketsville	California	United States	Village	-	65 km
Beatrice	California	United States	Village	-	66 km
Fields Landing	California	United States	Village	-	67 km
Metropolitan	California	United States	Village	-	68 km
Alton	California	United States	Village	-	68 km
Fortuna	California	United States	Village	10000 people	69 km
Rohnerville	California	United States	Village	-	69 km
Spruce Point	California	United States	Village	-	69 km
Humboldt Hill	California	United States	Village	3200 people	69 km
Belleview	California	United States	Village	-	70 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
Rohnerville		119	Civ.	Paved	Yes	4000	69 km
Eureka Municipal		6				0	70 km
Murray Field	EKA	2	Civ.	Paved	Yes	3000	78 km

Ports

Name	LOCODE	Country	Distance
Cape Mendocino		Wake Island	47 km
Fields Landing		Wake Island	66 km
Eureka	USEKA	Wake Island	72 km

More information

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

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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