Overall Green Earthquake alert in United States on 18 Sep 2018 12:40 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 5.4 in United States on 18 Sep 2018 12:40 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:	5.4M
Depth:	0.6 Km
Lat/Lon:	69.8241 , -144.983
Event Date:	18 Sep 2018 12:40 UTC 18 Sep 2018 04:40 Local
Exposed Population:	About 300 people within 100km
Source:	ALASKA EC ak20257376
Inserted at:	18 Sep 2018 13:06 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
ALASKA EC	0		0
ak20257376	Scaled population (vector)	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	Date	Mag, Depth	MMI*	Population**	Delay (hh:mm)	Source
1228774	18 Sep 2018 12:40	5.3M, 8.3km	4.67	N/A (in MMI>=VII)	00:05	ALASKA EC
1228777	18 Sep 2018 12:40	5.3M, 11.2km	4.67	N/A (in MMI>=VII)	00:08	ALASKA EC
1228782	18 Sep 2018 12:40	5.1M, 10.8km	5.96	N/A (in MMI>=VII)	00:21	ALASKA EC
1228783	18 Sep 2018 12:41	5.4M, 6.5km	N/A	Few people (in 100km)	00:23	ALASKA EC
1228784	18 Sep 2018 12:40	5.4M, 0.6km	5.46	N/A (in MMI>=VII)	00:25	ALASKA EC

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 Alaska. The alertlevel for this event is GREEN

Intensity	Population
	no people
	no people

Shakemaps Timeline

Shake id #	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	1228774	0/0	N/A	N/A	N/A	18 Sep 2018 12:48	00:07	(new episode)
2	1228777	0/0	N/A	N/A	N/A	18 Sep 2018 12:49	00:08	(new episode)
3	1228777	0/0	N/A	N/A	N/A	18 Sep 2018 12:54	00:13	(upd of #2)
4	1228777	0/0	N/A	N/A	N/A	18 Sep 2018 12:58	00:17	(upd of #3)
5	1228782	0/0	N/A	N/A	N/A	18 Sep 2018 13:02	00:21	(new episode)
6	1228782	0/0	N/A	N/A	N/A	18 Sep 2018 13:03	00:22	(upd of #5)
7	1228784	0/0	N/A	N/A	N/A	18 Sep 2018 13:15	00:34	(new episode)
8	1228784	0/0	N/A	N/A	N/A	18 Sep 2018 13:18	00:37	(upd of #7)
9	1228784	0/0	N/A	N/A	N/A	18 Sep 2018 13:21	00:40	(upd of #8)

Affected Provinces

Region Province	Country	Population
Alaska	United States	no people
Alaska	United States	no people
Alaska	United States	no people

Critical infrastructure

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

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.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.