Overall Green Earthquake alert in United States on 27 Feb 2021 18:59 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 5.3 in United States on 27 Feb 2021 18:59 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:	5.3M
Depth:	43.2 Km
Lat/Lon:	61.3347 , -150.019
Event Date:	27 Feb 2021 18:59 UTC 27 Feb 2021 09:59 Local
Exposed Population:	Less than 100 people in MMI V 410000 people within 100km
Source:	ALASKA EC ak0212o88mof
Inserted at:	27 Feb 2021 19:14 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
ak0212o88mof	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	Score	Date	Mag, Depth	MMI*	Population**	Delay (hh:mm)	Source
1360968	0.2	27 Feb 2021 18:59	5.3M, 38.1km	N/A	410 thousand (in 100km)	00:03	ALASKA EC
1360969	0	27 Feb 2021 18:59	5.3M, 31.3km	4.01	N/A (in MMI>=VII)	00:05	ALASKA EC
1360973	0.1	27 Feb 2021 18:59	5.3M, 40.9km	4.01	N/A (in MMI>=VII)	00:12	ALASKA EC
1360975	0	27 Feb 2021 18:59	5.3M, 40.9km	5.03	N/A (in MMI>=VII)	00:13	ALASKA EC
1360976	0	27 Feb 2021 18:59	5.3M, 43.2km	4.96	N/A (in MMI>=VII)	00:15	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 (population 128) . 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	1360969	61.332/-149.997	5.3	38.1	4.009	27 Feb 2021 19:06	00:07	(new episode)
2	1360975	61.331/-150.006	5.34	31.378	5.03	27 Feb 2021 19:12	00:13	(new episode)
3	1360976	61.335/-150.019	5.3	43.2027	4.94	27 Feb 2021 19:21	00:22	(new episode)
4	1360976	61.329/-149.999	5.3	42.1058	4.96	27 Feb 2021 19:28	00:29	(upd of #3)

Affected Provinces

Intensity	Region Province	Country	Population
	Alaska	United States	<1000 people
	Alaska	United States	390000 people

Affected populated places. Areas of interest

Name	Region Province	Country	City class	Population	Distance
John Fitzgerald Kennedy City	Alaska	United States	Village	-	12 km
Bay City	Alaska	United States	Village	-	7 km
Anchorage	Alaska	United States	Major city	260000 people	16 km
Spenard	Alaska	United States	Village	-	17 km
Nunaka Valley	Alaska	United States	Village	-	20 km
Eagle River	Alaska	United States	Village	-	24 km
Birchwood	Alaska	United States	Village	-	30 km
Chugiak	Alaska	United States	Village	-	30 km
Cottonwood	Alaska	United States	Village	-	31 km
Alexander	Alaska	United States	Village	-	33 km
Pittman	Alaska	United States	Village	-	35 km
Houston	Alaska	United States	Village	1200 people	35 km
Eklutna	Alaska	United States	Village	-	37 km
Wasilla	Alaska	United States	Village	5500 people	41 km
Willow	Alaska	United States	Village	1700 people	41 km
Rainbow	Alaska	United States	Village	-	42 km
Tanaina	Alaska	United States	Village	5000 people	45 km
Matanuska	Alaska	United States	Village	-	48 km
Gateway	Alaska	United States	Village	3000 people	49 km
Kashwitna	Alaska	United States	Village	-	58 km
Girdwood	Alaska	United States	Village	-	62 km
Ladd	Alaska	United States	Village	-	65 km
Caswell	Alaska	United States	Village	-	73 km
Old Tyonek	Alaska	United States	Village	-	77 km
McDougal	Alaska	United States	Village	-	78 km
Montana	Alaska	United States	Village	-	83 km
Nkishka No 2	Alaska	United States	Village	-	98 km
Nikiski	Alaska	United States	Village	4300 people	100 km
Nikisnka	Alaska	United States	Village	-	104 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
Goose Bay		24				0	11 km
Fire Island		17				0	20 km
Birchwood		29	Civ.	Paved	No	4000	30 km
Point Mackenzie		22				0	10 km
Sleepers Strip		38				0	10 km
Little Susitna		21				0	14 km
Elmendorf AFB	EDF	65	Mil.	Paved	Yes	10000	15 km
Merrill Field	MRI	42	Civ.	Paved	Yes	4000	16 km
Anchorage International	ANC	44	Civ.	Paved	Yes	11500	18 km
Bryant Ahp	FRN	115				0	21 km
Campbell Airstrip		87				0	23 km
Big Lake	BGQ	46				0	25 km
Flying Crown		14				0	27 km
Settlers Bay Airstrip		55				0	28 km
Twin Lake		61				0	29 km
Lincoln Village Airpark		76				0	29 km
Rabbit Creek		11				0	30 km
Hilltop		114				0	32 km
Hunt Strip		61				0	34 km
Satterburgs		107				0	36 km
Visnaw Lake		91				0	37 km
Jack Fish Landing		46				0	38 km
Wicker	WWA	96	Civ.	Unpaved	No	3700	39 km
Hardee Field		201				0	39 km
Nancy Lake		66				0	39 km
Gannon's Landing		116				0	39 km
Honeybee Lake Aero Park		61				0	42 km
Wasilla Lake		101				0	43 km
Deshka Landing		34				0	44 km
Shirley Lake		56				0	45 km
Memory Lake		128				0	46 km
Gattis Strip		98				0	46 km
Willow	WOW	67	Civ.	Unpaved	No	4400	47 km
Colberg		38				0	47 km
Four Corners		91				0	49 km
B & B Boys Ranch		91				0	49 km
Boisselle's Strip		122				0	50 km
Laub		30				0	51 km
Cardwell Strip		130				0	51 km
Thomas Strip		58				0	51 km
Jewell		34				0	52 km
Hope		61				0	52 km
Sky Ranch At Pioneer Peak		37				0	53 km
Bold		274				0	55 km
Kashwitna Lake		57				0	56 km
Wasilla Creek Airpark		84				0	58 km
Beluga	BVU	40	Priv.	Unpaved	Yes	5000	58 km
Rustic Wilderness		58				0	60 km
Girdwood	AQY	46				0	63 km
Tyonek	TYE	34				0	67 km
South Gasline		116				0	72 km
Secluded Lake		91				0	77 km
Parker Lake		76				0	82 km
Montana Creek		76				0	82 km
Nikolai Creek		9				0	85 km
Offshore Ststems-Kenai		46				0	96 km
Carty's Airstrip		46				0	99 km
Arness Lake		38				0	104 km

Ports

Name	LOCODE	Country	Distance
Anchorage	USANC	Wake Island	15 km
Palmer		Wake Island	54 km
Tyonek	USTYE	Wake Island	67 km
Nikiski	USNKI	Wake Island	105 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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