M 4.6 in Guam on 29 Jul 2020 04:23 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: 190.3 Km
Lat/Lon: 14.0177 , 144.6
Event Date: 29 Jul 2020 04:23 UTC
29 Jul 2020 14:23 Local
Exposed Population:
160000 people within 100km
Source: NEIC us6000b5u8
Inserted at: 29 Jul 2020 04:41 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us6000b5u8 Scaled population (vector) 4.91  
  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
1323855 0 29 Jul 2020 04:23 4.6M, 190.3km 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, Oceanview, Upi, Dededo, Harmon Village, Asatdas, Songsong, Spring Hill Subdivision, South Acres, Asan, and Camp Quezon.

Radius Population
100 km 170000 people
75 km 160000 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
Guam Guam 140000 people
Northern Mariana Is. Northern Mariana Islands 61000 people

Affected populated places

Name Region Province Country City class Population Distance
Potts Junction Guam Village - 55 km
Oceanview Guam Village - 56 km
Upi Guam Village - 57 km
Dededo Guam Village 3300 people 58 km
Harmon Village Guam Village - 58 km
Asatdas Guam Village - 60 km
Songsong Northern Mariana Islands Village 1300 people 60 km
Spring Hill Subdivision Guam Village - 61 km
South Acres Guam Village - 62 km
Asan Guam Village - 62 km
Ipapao Guam Village - 62 km
Lupog Guam Village - 62 km
Tamuning Guam Village 11000 people 62 km
Piti Guam Village - 62 km
Perez Acres Guam Village - 63 km
Mongmong Guam Village 3700 people 63 km
Hagåtña Guam Capital 1000 people 63 km
Gayinero Guam Village - 63 km
Sinajana Guam Village 2100 people 64 km
Barrigada Guam Village 4700 people 64 km
Adacao Guam Village - 65 km
Lockwood Terrace Guam Village - 65 km
Asbeco Guam Village - 66 km
Teteto Northern Mariana Islands Village - 66 km
Rota Northern Mariana Islands Village - 67 km
Camp Bright Guam Village - 67 km
Camp Quezon Guam Village - 67 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 59 km
A.B. Won Pat International GUM 91 0 63 km
Rota I International ROP 185 Civ. Paved Yes 6000 72 km

Ports

Name LOCODE Country Distance
Rota Northern Mariana Islands 60 km
Apra Harbor Guam 63 km
Apra (Agana) GUAPR Guam 64 km

More information

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