M 4.6 in Guam on 26 Oct 2020 11:00 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: 4.6M
Depth: 136.53 Km
Lat/Lon: 13.4316 , 144.4163
Event Date: 26 Oct 2020 11:00 UTC
26 Oct 2020 21:00 Local
Exposed Population:
160000 people within 100km
Source: NEIC us6000cd9h
Inserted at: 26 Oct 2020 12:52 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us6000cd9h Scaled population (vector) 5.49  
  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
1339754 0 26 Oct 2020 11:00 4.6M, 136.53km N/A 160 thousand (in 100km) 01:51 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 Lockwood Terrace, Camp Bright, Agat, Santa Rita, Piti, Umatac, Asan, Merizo, Hagåtña, Sinajana, and Lupog.

Radius Population
100 km 160000 people
75 km 160000 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
Lockwood Terrace Guam Village - 25 km
Camp Bright Guam Village - 26 km
Agat Guam Village 4400 people 27 km
Santa Rita Guam Village 1300 people 28 km
Piti Guam Village - 30 km
Umatac Guam Village - 31 km
Asan Guam Village - 33 km
Merizo Guam Village 1700 people 33 km
Hagåtña Guam Capital 1000 people 36 km
Sinajana Guam Village 2100 people 36 km
Talofofo Guam Village 2700 people 38 km
Mongmong Guam Village 3700 people 38 km
Ylig Guam Village - 38 km
Yona Guam Village 2300 people 39 km
Inarajan Guam Village <1000 people 39 km
Tamuning Guam Village 11000 people 39 km
Barrigada Guam Village 4700 people 42 km
Camp Quezon Guam Village - 42 km
Harmon Village Guam Village - 44 km
Asbeco Guam Village - 46 km
South Acres Guam Village - 46 km
Oceanview Guam Village - 46 km
Dededo Guam Village 3300 people 47 km
Adacao Guam Village - 48 km
Ipapao Guam Village - 49 km
Potts Junction Guam Village - 51 km
Perez Acres Guam Village - 52 km
Spring Hill Subdivision Guam Village - 52 km
Gayinero Guam Village - 54 km
Asatdas Guam Village - 55 km
Upi Guam Village - 55 km
Lupog Guam Village - 55 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
A.B. Won Pat International GUM 91 0 41 km
Andersen AFB UAM 191 0 58 km

Ports

Name LOCODE Country Distance
Apra Harbor Guam 22 km
Apra (Agana) GUAPR Guam 29 km

More information

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