M 5.5 in Guam from 16 Apr 2024 14:58 UTC to 14:58

Hazard models

Rapid Impact
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: 5.5M
Depth: 10 Km
Lat/Lon: 12.9367 , 145.3842
Event Date: 16 Apr 2024 14:58 UTC
17 Apr 2024 00:58 Local
Exposed Population: 10 thousand in MMI IV
Source: NEIC us7000mcej
Inserted at: 16 Apr 2024 15:19 UTC
INFORM Coping capacity of the alert score: 1.1 (Guam)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us7000mcej Scaled population (raster) 0  
  C1 shakemap 0  
  C2 shakemap 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
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

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1565310 0 16 Apr 2024 14:58 5.6M, 10km 3.41 140 thousand (in 100km) 00:15 PTWC
1565311 0 16 Apr 2024 14:58 5.5M, 10km 3.48 N/A (in MMI>=VII) 00:20 NEIC
1565934 0 16 Apr 2024 14:58 5.4M, 17.9km 3.56 9 thousand (in 100km) 3d 01:06 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 161,150) . The alertlevel for this event is GREEN

Intensity Population
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1565311 145.384/12.937 5.5 10 3.58 16 Apr 2024 15:24 00:25 (new episode)
2 0 1565311 145.384/12.937 5.5 10 3.512 16 Apr 2024 17:04 02:05 (upd of #1)
3 0 1565311 145.384/12.937 5.5 10 3.473 17 Apr 2024 15:40 1d 00:41 (upd of #2)

Affected Provinces

Intensity Region Province Country Population
Guam Guam 160000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Inarajan Guam Village <1000 people 79 km
Talofofo Guam Village 2700 people 82 km
Ylig Guam Village - 84 km
Yona Guam Village 2300 people 84 km
Camp Quezon Guam Village - 84 km
Merizo Guam Village 1700 people 85 km
Barrigada Guam Village 4700 people 87 km
Asatdas Guam Village - 87 km
Umatac Guam Village - 87 km
Upi Guam Village - 89 km
Tamuning Guam Village 11000 people 89 km
Sinajana Guam Village 2100 people 90 km
Mongmong Guam Village 3700 people 90 km
Dededo Guam Village 3300 people 90 km
Hagåtña Guam Capital 1000 people 91 km
Santa Rita Guam Village 1300 people 92 km
Agat Guam Village 4400 people 93 km
Asan Guam Village - 94 km
Camp Bright Guam Village - 95 km
Piti Guam Village - 95 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Andersen AFB UAM 191 0 88 km
A.B. Won Pat International GUM 91 0 88 km
Rota I International ROP 185 Civ. Paved Yes 6000 138 km

Ports

Intensity Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 95 km
Apra Harbor Guam 100 km

More information

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