M 6.1 in United States on 10 Oct 2021 21:48 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: 6.1M
Depth: 17.1 Km
Lat/Lon: 18.802 , -155.528
Event Date: 10 Oct 2021 21:48 UTC
10 Oct 2021 11:48 Local
Exposed Population: 20 thousand in 100km
Source: PTWC pt21283001
Inserted at: 18 Oct 2021 15:25 UTC
INFORM Coping capacity of the alert score
2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
PTWC 0 0
pt21283001 Scaled population (vector) 3.72  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 0.65  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1401457 0 10 Oct 2021 21:48 6.1M, 17.1km N/A 20 thousand (in 100km) 7d 17:37 PTWC
1401462 0 10 Oct 2021 21:48 5.7M, 34.66km N/A 150 thousand (in 100km) 7d 17:36 NEIC
1401464 0 10 Oct 2021 21:48 6.21M, 35.06km 6.82 N/A (in MMI>=VII) 0m (at 00:00) 7d 17:50 HVO
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 , State of Hawaii (population 1,153,336) . The nearest places are Kaalualu, Waiahukini, Naalehu, Waiohinu, Honuapo, Hilea, Hawaiian Ocean View, Kuipo, Country Garden Estates, Pahala, and Komakawai.

Radius Population
100 km 23000 people
75 km 2200 people
50 km 1700 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Hawaii United States 1.2 million people

Affected populated places

Name Region Province Country City class Population Distance
Kaalualu Hawaii United States Village - 20 km
Waiahukini Hawaii United States Village - 24 km
Naalehu Hawaii United States Village <1000 people 28 km
Waiohinu Hawaii United States Village - 29 km
Honuapo Hawaii United States Village - 31 km
Hilea Hawaii United States Village - 35 km
Hawaiian Ocean View Hawaii United States Village 2200 people 37 km
Kuipo Hawaii United States Village - 39 km
Country Garden Estates Hawaii United States Village - 40 km
Pahala Hawaii United States Village 1400 people 42 km
Punaluu Kahawai Hawaii United States Village - 48 km
Papa Hawaii United States Village - 57 km
Milolii Hawaii United States Village - 57 km
Ainapo Hawaii United States Village - 61 km
Komakawai Hawaii United States Village - 69 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
Kaalaiki Airstrip 599 0 34 km
Pahala Airstrip 364 0 44 km
Upper Paauau 792 0 45 km
Rainshed 1219 0 73 km
Mountain View Airstrip 457 0 92 km

Ports

Name LOCODE Country Distance
Honuapo Wake Island 29 km
Milolii Wake Island 57 km
Kauhako Bay Wake Island 73 km
Napoopoo Wake Island 85 km

More information

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