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Mount Vesuvius Eruptions Timeline

(79 AD – Present)

Mount Vesuvius, located near Naples, Italy, is one of the world's most dangerous volcanoes due to its history of explosive eruptions and the dense population nearby. Its most famous eruption in 79 AD destroyed the Roman cities of Pompeii and Herculaneum, and it has erupted numerous times since, most recently in 1944. Less

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The 79 AD Eruption

Vesuvius eruption recorded in first-century Roman sources

79 AD

Vesuvius and its destructive eruption are mentioned in first-century Roman sources. However, these contemporary accounts do not record the specific day on which the eruption began, leaving later scholars to rely on other evidence to establish a precise date.

Image source: Eruption of Mount Vesuvius in 79 AD

Vesuvius eruption recorded in first-century Roman sources

Pliny the Younger writes letter to Tacitus about the eruption

104 AD

Some 25 years after the event, Pliny the Younger wrote a letter addressed to the Roman historian Tacitus describing the eruption of Vesuvius, including the death of his uncle Pliny the Elder. This letter became the key primary source for dating the disaster.

Image source: Pliny the Younger

Pliny the Younger writes letter to Tacitus about the eruption

Dating Debates

1508 printed copy of Pliny's letter establishes August 24 date

1508

A 1508 printed copy of Pliny the Younger's letter to Tacitus gave the date of the eruption as August 24, 79 AD. This printed edition became the basis for the traditional date cited for centuries.

Manuscript corruption over fourteen centuries of hand-copying

1508

Over fourteen centuries of manuscript hand-copying up to the 1508 printing of Pliny's letters, the date given in his original letter may have been corrupted, casting doubt on whether August 24 was truly the date he recorded.

Traditional August 24 date used for more than five centuries

1508 - 2018

For more than five centuries, until approximately 2018, articles about the eruption of Vesuvius typically stated that the eruption began on August 24, 79 AD, based on the 1508 printed copy of Pliny's letter.

Late 18th century minority suggests an autumn eruption date

1790

Since at least the late 18th century, a minority among archaeologists and other scientists have suggested that the eruption began after August 24, during the autumn, perhaps in October or November, based on archaeological and environmental clues.

Carlo Rosini reports autumn traces at Pompeii and Herculaneum

1797

In 1797, the researcher Carlo Rosini reported that excavations at Pompeii and Herculaneum had uncovered traces of fruits and braziers indicative of autumn rather than summer, challenging the traditional August 24 date.

Study of prevailing winds supports autumn eruption date

2007

In 2007, a study of prevailing winds in Campania showed that the southeasterly debris pattern of the first-century eruption is quite consistent with an autumn event and inconsistent with an August date, adding meteorological support to the autumn hypothesis.

End of the traditional August 24 date in scholarship

2018

By approximately 2018, after more than five centuries, articles about the eruption of Vesuvius ceased to typically state that the eruption began on August 24, as new archaeological evidence increasingly favored an autumn date.

Charcoal inscription uncovered suggesting October 17 date

Oct 2018

In October 2018, Italian archaeologists uncovered a charcoal inscription reading 'the 16th day before the calends (first) of November,' or October 17, that was probably made by a worker renovating a home, and which has subsequently been suggested as the most likely date for the eruption.

Analysis of historical translations defends August 24

2022

In 2022, an analysis of the historical translations claimed that no other date than August 24 is supported by evidence from Pliny, defending the traditional date against the growing consensus for an autumn eruption.

Collaborative study dates eruption between Oct 24 and Nov 1

2022

A collaborative study in 2022 determined a date of 'between October 24th and November 1st' for the eruption in 79 AD, providing the most precise scientific estimate yet for when the catastrophic eruption began.

Archaeological Discoveries

Discovery of 300 bodies in arched vaults at Herculaneum

1980

In 1980, arched vaults were discovered at Herculaneum containing 300 skeletons of victims who had sheltered from the eruption. These remains brought the total number of bodies found at Herculaneum to about 332.

Image source: Herculaneum

Discovery of 300 bodies in arched vaults at Herculaneum

Archaeologists discover autumnal fruit remnants at Pompeii

1990

In 1990, archaeologists discovered more remnants of autumnal fruits such as the pomegranate at Pompeii, providing further evidence that the eruption may have occurred in autumn rather than late summer.

Further autumn evidence found: heavy clothing and wine vessels

2001

In 2001, archaeologists discovered additional remnants of autumnal fruits, the remains of victims of the eruption wearing heavy clothing, and large earthenware storage vessels laden with wine at the time of their burial by Vesuvius, all pointing toward an autumn eruption.

Approximately 1,044 body casts recovered at Pompeii

2003

By 2003, approximately 1,044 casts made from impressions of bodies in the ash deposits had been recovered in and around Pompeii, along with the scattered bones of another 100 individuals, documenting the human toll of the eruption.

Image source: Pompeii

Approximately 1,044 body casts recovered at Pompeii

Scientific Studies

Sigurðsson, Cashdollar, and Sparks stratigraphic study published

1982

Sigurðsson, Cashdollar, and Sparks undertook a detailed stratigraphic study of ash layers based on excavations and surveys, published in 1982. Their work clarified the sequence of eruptive phases during the 79 AD catastrophe.

Sigurðsson and Casey publish article on early explosion column

2002

In an article published in 2002, Sigurðsson and Casey concluded that an early explosion produced a column of ash and pumice which rained on Pompeii to the southeast but not on Herculaneum, which was upwind, explaining differences in deposits between the two cities.

Zanella et al. magnetic study estimates pyroclastic deposit temperatures

2006

A 2006 study by Zanella, Gurioli, Pareschi, and Lanza used the magnetic characteristics of over 200 samples of lithic, roof-tile, and plaster fragments collected from pyroclastic deposits in and around Pompeii to estimate the equilibrium temperatures of the deposits.

Key Facts

  1. The eruption of 79 AD buried the Roman cities of Pompeii and Herculaneum under ash and pyroclastic flows, preserving them remarkably well for archaeology.
  2. Mount Vesuvius is a stratovolcano located about 9 kilometers east of Naples, Italy, near the Bay of Naples.
  3. Vesuvius has erupted many times over the centuries, with major eruptions occurring in 472, 1631, 1906, and 1944.
  4. The 1631 eruption killed thousands and led to the establishment of early monitoring efforts and evacuation protocols.
  5. Today, Vesuvius is considered one of the most closely monitored volcanoes in the world because roughly three million people live in its danger zone.

Source

This Mount Vesuvius Eruptions timeline was generated with the help of AI, using information found on the internet.

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