Morne Watt

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 15.307°N
  • 61.305°W

  • 1224 m
    4015 ft

  • 360101
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Morne Watt.

 Available Weekly Reports

There are no Weekly Reports available for Morne Watt.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1997 Jul 15 1997 Jul 15 Confirmed 1 Historical Observations NE of Watt Mtn (Valley of Desolation)
1880 Jan 4 1880 Jan 4 Confirmed 2 Historical Observations NE of Watt Mtn (Valley of Desolation)
0640 ± 150 years Unknown Confirmed   Radiocarbon (uncorrected) West flank of Morne Watt
0950 BCE ± 300 years Unknown Confirmed   Radiocarbon (uncorrected) NE of Watt Mtn (Valley of Desolation)
1800 BCE ± 100 years Unknown Confirmed   Radiocarbon (uncorrected) NE of Watt Mtn (Valley of Desolation)

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Lindsay J M, Smith A L, Roobol M J, Stasiuk M V, 2005b. Dominica. In: Lindsay J M, Robertson R E A, Shepherd J B, Ali S (eds). {Volcanic Hazard Atlas of the Lesser Antilles}, Trinidad and Tobago, Seismic Res Unit, Univ West Indies, p 1-47.

Lindsay J M, Trumbull R B, Siebel W, 2005c. Geochemistry and petrogenesis of late Pleistocene to Recent volcanism in southern Dominica, Lesser Antilles. J Volc Geotherm Res, 148: 253-294.

Robson G R, Tomblin J, 1966. West Indies. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 20: 1-56.

Seismic Research Unit, 2001. Seismo-volcanic activity in Dominica (updated July 11, 2001). Seismic Res Unit, Univ West Indies (

Shepherd J B, 1989. Eruptions, eruption precursors and related phenomena in the Lesser Antilles. In: Latter J H (ed), {Volcanic Hazards - Assessment and Monitoring}, Berlin: Springer-Verlag, p 292-311.

Shepherd J B, 2001. Volcanoes of the eastern Caribbean: past activity and future hazards. Paper presented at the Workshop on Volcanic and Seismic Hazards in the eastern Caribbean, May 28- June 1, 2001, 57 p.

Morne Watt (Watt Mountain) volcano lies SE of the Trois Piton/Micotrin lava-dome complex in SE Dominica, east of the capital city of Roseau. The two best-known volcanic features on Dominica, the Valley of Desolation and the Boiling Lake thermal areas, lie on the flank of Morne Watt; both are major tourist attractions within the national park on Dominica. Morne Anglais stratovolcano lies 4 km SW of Morne Watt and Grand Soufrière Hills volcano, with dated pyroclastic-flow producing eruptions about 10,000 years ago, lies 3 km to the east. A major eruption from Morne Watt producing pyroclastic flows took place about 1300 years ago. A moderately large phreatic explosion took place at the Valley of Desolation thermal area NE of Morne Watt in 1880, when ash fell over a 4-km-wide sector at the coast, 10 km from the vent. A smaller phreatic explosion occurred in July 1997, when ashfall was confined to the Valley of Desolation area. These mark the only known historical eruptions on the island of Dominica.