M 5.1 in Guam on 24 Feb 2021 23:37 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: 5.1M
Depth: 134.53 Km
Lat/Lon: 13.8178 , 144.7992
Event Date: 24 Feb 2021 23:37 UTC
25 Feb 2021 09:37 Local
Exposed Population:
160000 people within 100km
Source: NEIC us7000ddg5
Inserted at: 24 Feb 2021 23:55 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000ddg5 Scaled population (vector) 5.5  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1360455 0 24 Feb 2021 23:37 5.1M, 134.53km N/A 170 thousand (in 100km) 00:17 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 Guam , of Guam (population 143,173) . The nearest places are Potts Junction, Upi, Oceanview, Dededo, Asatdas, Harmon Village, Spring Hill Subdivision, Lupog, Ipapao, Gayinero, and Merizo.

Radius Population
100 km 170000 people
75 km 170000 people
50 km 150000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Guam Guam 140000 people

Affected populated places

Name Region Province Country City class Population Distance
Potts Junction Guam Village - 26 km
Upi Guam Village - 27 km
Oceanview Guam Village - 28 km
Dededo Guam Village 3300 people 30 km
Asatdas Guam Village - 30 km
Harmon Village Guam Village - 31 km
Spring Hill Subdivision Guam Village - 32 km
Lupog Guam Village - 32 km
Ipapao Guam Village - 34 km
Gayinero Guam Village - 34 km
Perez Acres Guam Village - 34 km
South Acres Guam Village - 34 km
Adacao Guam Village - 37 km
Tamuning Guam Village 11000 people 37 km
Mongmong Guam Village 3700 people 39 km
Barrigada Guam Village 4700 people 39 km
Asbeco Guam Village - 39 km
Hagåtña Guam Capital 1000 people 39 km
Asan Guam Village - 39 km
Sinajana Guam Village 2100 people 40 km
Piti Guam Village - 41 km
Camp Quezon Guam Village - 41 km
Lockwood Terrace Guam Village - 46 km
Yona Guam Village 2300 people 46 km
Camp Bright Guam Village - 47 km
Ylig Guam Village - 48 km
Santa Rita Guam Village 1300 people 50 km
Agat Guam Village 4400 people 51 km
Songsong Northern Mariana Islands Village 1300 people 51 km
Talofofo Guam Village 2700 people 52 km
Rota Northern Mariana Islands Village - 57 km
Teteto Northern Mariana Islands Village - 58 km
Umatac Guam Village - 59 km
Inarajan Guam Village <1000 people 60 km
Sinapalo Northern Mariana Islands Village - 61 km
Merizo Guam Village 1700 people 63 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
Andersen AFB UAM 191 0 29 km
A.B. Won Pat International GUM 91 0 37 km
Rota I International ROP 185 Civ. Paved Yes 6000 62 km

Ports

Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 43 km
Apra Harbor Guam 46 km
Rota Northern Mariana Islands 51 km

More information

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