Overall Red alert Volcanic eruption for Hunga Tonga-Hunga Ha apai
in Tonga

See tsunami impact at section below

Event summary

Volcanic eruption Hunga Tonga-Hunga Ha'apai is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Name: Hunga Tonga-Hunga Ha apai
Lat/Lon: -20.536 , -175.382
Event Date: 18 Jan 2022 UTC
Exposed Population 30km: No people affected
Exposed Population 100km: About 80000 people within 100km
Max Volc. Explosivity Index VEI: 2
Population exposure index: 2
Inserted at: 14 Jan 2022 08:12 UTC

GDACS Score

For more info on GDACS alert score click here.

Historical Timeline

Volcano Timeline

IDGDACS alert colorDateSource
1 20 Dec 2021 00:00 WELLINGTON
2 23 Dec 2021 00:00 WELLINGTON
3 14 Jan 2022 00:00 WELLINGTON
4 16 Jan 2022 22:10 WELLINGTON
5 18 Jan 2022 00:00 DARWIN

Exposed population

The eruption happened in Tonga , of Tonga (population 98,000) . The nearest places are Foui, Nukunuku, and Nuku'alofa.

Radius Population
100 km 79000 people
75 km 61000 people
50 km no people
30 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
Tonga Tonga 98000 people

Affected populated places

Name Region Province Country City class Population Distance
Foui Tonga Village - 64 km
Nukunuku Tonga Village - 67 km
Nuku'alofa Tonga Capital 24000 people 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
Fua'amotu International TBU 38 Civ. Paved Yes 8700 82 km

Ports

Name LOCODE Country Distance
Nuku'alofa TOTBU Tonga 69 km

Dams

Nuclear plants

Tsunami impact

Click on image to zoom it.

Tsunami affected locations

The maximum Wave height is  1.6m in Ohonua, Tonga. This height is estimated for 15-Jan-2022 00:24:03.

Alert Date (UTC) Name Country Wave height (m)
15-Jan-2022 00:24:03 Ohonua Tonga  1.6
15-Jan-2022 00:17:37 Pea Tonga  1.4
15-Jan-2022 00:20:35 Fuaamotu Tonga  1.3
15-Jan-2022 00:12:54 Foui Tonga  1.3
15-Jan-2022 00:12:54 Nukunuku Tonga  1.3
15-Jan-2022 00:12:54 Houma Tonga  1.3
15-Jan-2022 01:29:06 Mburelevu Fiji  1.1
15-Jan-2022 01:29:06 Mokoisa Fiji  1.1
15-Jan-2022 00:40:42 Niutoua Tonga  0.8
15-Jan-2022 01:52:39 Nasau Fiji  0.7
15-Jan-2022 01:52:39 Talaulia Fiji  0.7
15-Jan-2022 01:47:51 Namara Fiji  0.7
15-Jan-2022 01:22:65 Kaduvu Fiji  0.7
15-Jan-2022 01:53:06 Monothaki Fiji  0.6
15-Jan-2022 01:30:64 Soso Fiji  0.6
15-Jan-2022 01:12:05 Namuka Fiji  0.5
15-Jan-2022 02:02:09 Matavuralevu Fiji  0.5
15-Jan-2022 02:02:09 Pacific Harbour Fiji  0.5
15-Jan-2022 01:10:63 Nukuvou Fiji  0.5
15-Jan-2022 03:35:08 Raoul Island Boat Cove New Zealand  0.5
15-Jan-2022 03:35:08 Raoul Island Fishing Rock New Zealand  0.5
15-Jan-2022 03:08:85 Yerou Vanuatu  0.5
15-Jan-2022 03:25:96 Anelghowhat Vanuatu  0.4
15-Jan-2022 01:20:42 Kalokolevu Fiji  0.4
15-Jan-2022 01:20:42 Suva Fiji  0.4
15-Jan-2022 03:10:66 Lenakel Vanuatu  0.4
15-Jan-2022 03:10:66 Isangel Vanuatu  0.4
15-Jan-2022 01:20:15 Keteira Fiji  0.4
15-Jan-2022 01:55:95 Sawaieke Fiji  0.4
15-Jan-2022 01:20:68 Nabouwalu Fiji  0.4
15-Jan-2022 01:20:68 Vabea Fiji  0.4
15-Jan-2022 01:34:75 Suva_Viti_Levu_FJ Fiji Islands  0.4
15-Jan-2022 02:30:27 Navuti Fiji  0.4
15-Jan-2022 01:45:47 Gasele Fiji  0.4
15-Jan-2022 01:34:76 Tamavua Fiji  0.4
15-Jan-2022 01:34:76 Lauthala Bay Fiji  0.4
15-Jan-2022 01:34:76 Laucala Fiji  0.4
15-Jan-2022 02:33:36 Samatau Samoa  0.4
15-Jan-2022 02:33:36 Faleaseela Samoa  0.4
15-Jan-2022 02:45:37 Galoa Fiji  0.4
15-Jan-2022 03:00:74 Isino Vanuatu  0.3
15-Jan-2022 03:12:26 Loanatom Vanuatu  0.3
15-Jan-2022 03:15:87 Naitionitoni Fiji  0.3
15-Jan-2022 03:41:05 Ndaria Fiji  0.3
15-Jan-2022 03:30:63 Ireupuow Vanuatu  0.3
15-Jan-2022 00:56:13 Andako Fiji  0.3
15-Jan-2022 01:51:98 Thikombia Fiji  0.3
15-Jan-2022 03:08:08 Yeruareng Vanuatu  0.3
15-Jan-2022 02:01:68 Tuvutha Fiji  0.3
15-Jan-2022 02:13:44 Qeleni Fiji  0.3
15-Jan-2022 02:50:32 Rave-rave Fiji  0.3
15-Jan-2022 01:11:83 Vandravandra Fiji  0.3
15-Jan-2022 01:31:71 Vatukarasa Fiji  0.3
15-Jan-2022 05:14:25 Umetch Vanuatu  0.3
15-Jan-2022 03:09:82 Imareukak Vanuatu  0.3
15-Jan-2022 03:09:82 Yokopenan Vanuatu  0.3
15-Jan-2022 01:17:08 Nuku'alofa Tonga  0.2
15-Jan-2022 01:17:08 Nukualofa_TO Tonga Island  0.2
15-Jan-2022 03:13:19 Waisomo Fiji  0.2
15-Jan-2022 03:13:19 Dakuimbeqa Fiji  0.2
15-Jan-2022 03:38:77 Waiyevo Fiji  0.2
15-Jan-2022 03:17:51 Nauouo Fiji  0.2
15-Jan-2022 01:23:75 Liku Fiji  0.2
15-Jan-2022 01:31:76 Cuvu Fiji  0.2
15-Jan-2022 05:06:86 Taurikura New Zealand  0.2
15-Jan-2022 01:31:71 Sigatoka Fiji  0.2
15-Jan-2022 01:34:76 Lomawal Fiji  0.2
15-Jan-2022 01:34:76 Mbatiri Fiji  0.2
15-Jan-2022 05:09:85 Happy Land Vanuatu  0.2
15-Jan-2022 01:24:11 Dalice Fiji  0.2
15-Jan-2022 03:03:36 Vunikura Fiji  0.2
15-Jan-2022 03:35:53 Nabouwalu Fiji  0.2
15-Jan-2022 01:30:89 Korolevu Fiji  0.2
15-Jan-2022 03:32:94 Thavanga Fiji  0.2
15-Jan-2022 02:24:91 Fuailalo Samoa  0.2
15-Jan-2022 02:24:91 Fasitootai Samoa  0.2
15-Jan-2022 03:24:86 Yawisaghuwi Vanuatu  0.2
15-Jan-2022 04:34:48 Loounemeloupang Vanuatu  0.2
15-Jan-2022 03:11:18 Rampunalvat Vanuatu  0.2
15-Jan-2022 03:36:49 Vione Fiji  0.2
15-Jan-2022 03:07:96 Mua Wallis and Futuna  0.2
15-Jan-2022 02:45:37 Savusavu Fiji  0.2
15-Jan-2022 02:45:37 Naindi Fiji  0.2
15-Jan-2022 03:00:74 Somosomo Fiji  0.2
15-Jan-2022 04:23:23 Aasu American Samoa  0.2
15-Jan-2022 04:23:23 Fagasa American Samoa  0.2
15-Jan-2022 04:23:23 Pago Pago American Samoa  0.2
15-Jan-2022 04:23:23 Siufaga American Samoa  0.2
15-Jan-2022 03:34:85 Salelologa Samoa  0.2
15-Jan-2022 02:59:48 Port Patrick Vanuatu  0.2
15-Jan-2022 01:26:85 Levuka Fiji  0.2
15-Jan-2022 01:24:11 Bouwanga Fiji  0.2
15-Jan-2022 01:31:71 Waisa Fiji  0.2
15-Jan-2022 05:00:81 Ngataki New Zealand  0.2
15-Jan-2022 05:00:81 Houhora New Zealand  0.2
15-Jan-2022 01:40:53 Vanuavatu Fiji  0.2
15-Jan-2022 01:30:43 Korovisilou Fiji  0.2
15-Jan-2022 04:33:46 Naruwai Fiji  0.2
15-Jan-2022 01:42:74 Mua Wallis and Futuna  0.1
15-Jan-2022 01:42:36 Alo Wallis and Futuna  0.1
15-Jan-2022 03:10:15 Vangai Fiji  0.1
15-Jan-2022 02:57:93 Makongai Fiji  0.1
15-Jan-2022 02:11:42 Momi Fiji  0.1
15-Jan-2022 01:42:36 Tavua Fiji  0.1
15-Jan-2022 05:12:23 Motutangi New Zealand  0.1
15-Jan-2022 03:19:92 Satupaitea Samoa  0.1
15-Jan-2022 01:42:36 Leava Wallis and Futuna  0.1
15-Jan-2022 01:42:36 Leava (Futuna Island- Wallis and Futuna) France  0.1
15-Jan-2022 02:14:06 Yanutha Fiji  0.1
15-Jan-2022 01:35:95 Taunovo Fiji  0.1
15-Jan-2022 04:04:09 Viani Fiji  0.1
15-Jan-2022 03:32:94 Nathamaki Fiji  0.1
15-Jan-2022 01:41:35 Ucunivanua Fiji  0.1
15-Jan-2022 04:26:43 Umpon Mompu Vanuatu  0.1
15-Jan-2022 03:10:66 Nalauwaki Fiji  0.1
15-Jan-2022 02:39:17 Isavai Vanuatu  0.1
15-Jan-2022 01:09:08 Alofi Niue  0.1
15-Jan-2022 01:09:08 Avatele Niue  0.1
15-Jan-2022 01:09:08 Hakupu Niue  0.1
15-Jan-2022 01:44:74 Tawake Fiji  0.1
15-Jan-2022 04:12:15 Naingani Fiji  0.1
15-Jan-2022 03:41:15 Saleimoa Samoa  0.1
15-Jan-2022 03:41:15 Utuavanua Samoa  0.1
15-Jan-2022 04:27:38 Unpongkor Vanuatu  0.1
15-Jan-2022 04:40:86 Rawhiti New Zealand  0.1
15-Jan-2022 01:16:84 Nakondu Fiji  0.1
15-Jan-2022 03:03:36 Korovou Fiji  0.1
15-Jan-2022 03:41:05 Naweni Fiji  0.1
15-Jan-2022 01:36:21 Siumu Samoa  0.1
15-Jan-2022 02:07:55 Matautu Samoa  0.1
15-Jan-2022 02:10:57 Poloa American Samoa  0.1
15-Jan-2022 02:10:57 Amanave American Samoa  0.1
15-Jan-2022 03:37:73 Aoa American Samoa  0.1
15-Jan-2022 03:37:73 Onenoa American Samoa  0.1
15-Jan-2022 03:37:73 Alao American Samoa  0.1
15-Jan-2022 03:37:73 Tula American Samoa  0.1
15-Jan-2022 03:37:73 Aunuu American Samoa  0.1
15-Jan-2022 04:46:92 Amaile Samoa  0.1
15-Jan-2022 01:55:95 Nailou Fiji  0.1
15-Jan-2022 01:55:95 Napuka Fiji  0.1
15-Jan-2022 05:05:45 Fagamalo American Samoa  0.1
15-Jan-2022 02:02:09 Biagunu Fiji  0.1
15-Jan-2022 04:09:12 Solosolo Samoa  0.1
15-Jan-2022 02:22:79 Nakarambo Fiji  0.1
15-Jan-2022 02:27:67 Korotasere Fiji  0.1
15-Jan-2022 04:47:01 Ndalomo Fiji  0.1
15-Jan-2022 02:55:27 Navolou Vanuatu  0.1
15-Jan-2022 01:09:08 Niue Niue  0.1
15-Jan-2022 01:16:32 400 NM Southeast of Tonga  0.1
15-Jan-2022 03:10:15 Falelima Samoa  0.1
15-Jan-2022 01:37:06 Lotofago Samoa  0.1
15-Jan-2022 01:53:76 Namboutini Fiji  0.1
15-Jan-2022 04:04:09 Sasina Samoa  0.1
15-Jan-2022 03:33:37 Nasaga Fiji  0.1
15-Jan-2022 03:33:37 Lovoni Fiji  0.1
15-Jan-2022 04:25:46 Tuasivi Samoa  0.1
15-Jan-2022 02:20:45 Ndrekeniwai Fiji  0.1
15-Jan-2022 04:27:24 Pandora New Zealand  0.1
15-Jan-2022 05:10:09 Omapere New Zealand  0.1
15-Jan-2022 05:10:09 Opononi New Zealand  0.1
15-Jan-2022 01:03:04 Esia Fiji  0.1
15-Jan-2022 02:33:36 Navakawau Fiji  0.1
15-Jan-2022 04:49:35 Nambouono Fiji  0.1
15-Jan-2022 03:27:97 Afono American Samoa  0.1
15-Jan-2022 03:27:97 Masefau American Samoa  0.1
15-Jan-2022 02:55:07 Lalomoana American Samoa  0.1
15-Jan-2022 02:55:07 Olosega American Samoa  0.1
15-Jan-2022 05:14:25 Namaka Fiji  0.1
15-Jan-2022 02:29:13 Mohoun'gha Vanuatu  0.1
15-Jan-2022 02:29:14 Ipao Vanuatu  0.1
15-Jan-2022 01:12:25 Lakepa Niue  0.1
15-Jan-2022 03:45:02 Nalele Fiji  0.1
15-Jan-2022 01:37:92 Salailua Samoa  0.1
15-Jan-2022 01:37:51 Seetaga American Samoa  0.1
15-Jan-2022 01:37:51 Amaluia American Samoa  0.1
15-Jan-2022 01:37:51 Leone American Samoa  0.1
15-Jan-2022 01:37:51 Vailoatai American Samoa  0.1
15-Jan-2022 01:37:51 Taputimu American Samoa  0.1
15-Jan-2022 01:37:51 Futiga American Samoa  0.1
15-Jan-2022 01:37:51 Pavaiai American Samoa  0.1
15-Jan-2022 01:37:51 Vaitogi American Samoa  0.1
15-Jan-2022 01:37:51 Iliili American Samoa  0.1
15-Jan-2022 01:37:51 Mesepa American Samoa  0.1
15-Jan-2022 01:37:51 Faleniu American Samoa  0.1
15-Jan-2022 01:38:77 Fagatogo American Samoa  0.1
15-Jan-2022 01:38:77 Atuu American Samoa  0.1
15-Jan-2022 01:38:77 Utulei American Samoa  0.1
15-Jan-2022 01:38:77 Matuu American Samoa  0.1
15-Jan-2022 01:38:77 Fagaalu American Samoa  0.1
15-Jan-2022 01:38:77 Leloaloa American Samoa  0.1
15-Jan-2022 01:38:77 Aua American Samoa  0.1
15-Jan-2022 01:38:77 Lauliifou American Samoa  0.1
15-Jan-2022 01:38:77 Auto American Samoa  0.1
15-Jan-2022 01:38:77 Pago Pago Samoa  0.1
15-Jan-2022 01:38:77 Pago_Pago_AS USA  0.1
15-Jan-2022 01:45:17 Solevu Fiji  0.1
15-Jan-2022 02:53:03 Tau American Samoa  0.1
15-Jan-2022 02:53:03 Faleasau American Samoa  0.1
15-Jan-2022 04:09:93 Puapua Samoa  0.1
15-Jan-2022 04:50:26 Rakiraki Fiji  0.1
15-Jan-2022 04:10:56 Elsee Fiji  0.1
15-Jan-2022 04:10:56 Sumi Fiji  0.1
15-Jan-2022 04:03:83 Savu Sau Fiji  0.1
15-Jan-2022 05:07:29 Sisili Fiji  0.1
15-Jan-2022 05:07:29 Nacula Fiji  0.1
15-Jan-2022 04:23:86 Motairehe New Zealand  0.1
15-Jan-2022 05:07:74 Whangape New Zealand  0.1
15-Jan-2022 05:07:74 Pawarenga New Zealand  0.1
15-Jan-2022 05:07:29 Mitimiti New Zealand  0.1
15-Jan-2022 05:14:25 Baylys Beach New Zealand  0.1
15-Jan-2022 01:10:26 Mutalau Niue  0.1
15-Jan-2022 02:30:95 Falealupo Samoa  0.1
15-Jan-2022 01:37:92 Nuuuli American Samoa  0.1
15-Jan-2022 01:38:77 Fagaitua American Samoa  0.1
15-Jan-2022 01:38:77 Alofau American Samoa  0.1
15-Jan-2022 01:38:77 Amouli American Samoa  0.1
15-Jan-2022 02:56:25 Somosomo Fiji  0.1
15-Jan-2022 05:04:38 Puhau New Zealand  0.1

See full locations list (RSS)


Initial conditions

Title: ""Tsunami Volcano Tonga""

Fault parameters

  • Length: 158 km
  • Width: 44 km
  • Magnitude: 8 M

Okada parameters:

  • Slip: 4 m
  • Strike: 207 (geogr angle: north=0, south=180)
  • Dip: 32 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -191.36, -36.137, -161.36, -6.137
  • Instead of Step -> use Cell size:2.5 minutes

More information

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