1595 Nevado del Ruiz | |
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| Total costs | N/A |
| Deaths | 600 |
The Nevado del Ruiz (Spanish pronunciation: [neβaðo ðel ˈrwis]), also known as La Mesa de Herveo (English: Mesa of Herveo, the name of the nearby town) is a volcano on the border of the departments of Caldas and Tolima in Colombia, about 129 kilometers (80 mi) west of the capital city Bogotá. It is a stratovolcano composed of many layers of lava alternating with hardened volcanic ash and other pyroclastic rocks. Volcanic activity at Nevado del Ruiz began about two million years ago, since the Early Pleistocene or Late Pliocene, with three major eruptive periods. The current volcanic cone formed during the present eruptive period, which began 150,000 years ago. The volcano usually generates Vulcanian to Plinian eruptions, which produce swift-moving currents of hot gas and rock called pyroclastic flows. These eruptions often cause massive lahars (mud and debris flows), which pose a threat to human life and the environment. The impact of such an eruption is increased as the hot gas and lava melt the mountain's snowcap, adding large quantities of water to the flow. On November 13, 1985, a small eruption produced an enormous lahar that buried and destroyed the town of Armero in Tolima, causing an estimated 25,000 deaths. This event later became known as the Armero tragedy—the deadliest lahar in recorded history. Similar but less deadly incidents occurred in 1595 and 1845, consisting of a small explosive eruption followed by a large lahar. The volcano is part of Los Nevados National Natural Park, which also contains several other volcanoes. The summit of Nevado del Ruiz is covered by large glaciers. The volcano continues to pose a threat to the nearby towns and villages, and it is estimated that up to 500,000 people could be at risk from lahars from future eruptions. Today, the Nevado del Ruiz volcano is constantly monitored by the Volcanic and Seismic Observatory of Manizales.
Source: Wikipedia 1871 Peshtigo fire | |
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| Total costs | N/A |
| Deaths | 2500 |
The Peshtigo fire was a large forest fire on Oct. 8, 1871, in northeastern Wisconsin, United States, including much of the southern half of the Door Peninsula and adjacent parts of the Upper Peninsula of Michigan. The largest community in the affected area was Peshtigo, Wisconsin which had a population of approximately 1,700 residents. The fire burned about 1.2 million acres and is the deadliest wildfire in recorded history, with the number of deaths estimated between 1,500 and 2,500. Although the exact number of deaths is debated, mass graves [both those already exhumed and those still being discovered] in Peshtigo and the surrounding areas show that the death toll of the blaze was most likely greater than the 1889 Johnstown flood death toll of 2,200 people or more.Occurring on the same day as the more famous Great Chicago Fire, the Peshtigo fire has been largely forgotten, even though it killed far more people. In total, the Great Chicago Fire had taken one-fifth as many lives as the Peshtigo Fire. 'Everybody's heard about the Chicago fire, and that got all the publicity at the time,' said a volunteer at the Peshtigo Fire Museum, named Ruth Wiltzius, whose great-grandfather perished while trying to escape. 'Peshtigo was a backwards lumber town then -- who had ever heard of it? Chicago was the big city. Which one was going to get more attention?'Nonetheless, several cities in Michigan, including Holland and Manistee (across Lake Michigan from Peshtigo) and Port Huron (at the southern end of Lake Huron), also had major fires on the same day. These fires, along with many other fires of the nineteenth century had the same basic causes: small fires coupled with unusually dry weather.
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