1783-1784 Chalisa famine | |
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| Total costs | N/A |
| Deaths | 11000000 |
The Chalisa famine of 1783–1784 in the Indian subcontinent followed unusual El Niño events that began in 1780 and caused droughts throughout the region. Chalisa (literally, 'of the fortieth' in Hindustani) refers to the Vikram Samvat calendar year 1840 (1783). The famine affected many parts of North India, especially the Delhi territories, present-day Uttar Pradesh, Eastern Punjab, Rajputana, and Kashmir, then all ruled by different Indian rulers. The Chalisa was preceded by a famine in the previous year, 1782–1783, in South India, including Madras City and surrounding areas (under British East India Company rule) and in the extended Kingdom of Mysore (under the rule of Haider Ali and Tipu Sultan). Together the two famines may have depopulated many regions of India, including, for example, 17 per cent of the villages in the Sirkali region of present-day Tamil Nadu, 60 per cent of the villages in the middle Doab of present-day Uttar Pradesh, and over 30 per cent of the villages in the regions around Delhi. It is thought that up to 11 million people may have died in the two famines.
Source: Wikipedia 1980 Mount St. Helens | |
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| Total costs | N/A |
| Deaths | 57 |
On March 27, 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States. A series of phreatic blasts occurred from the summit and escalated until a major explosive eruption took place on May 18, 1980. The eruption, which had a Volcanic Explosivity Index of 5, was the most significant to occur in the contiguous United States since the much smaller 1915 eruption of Lassen Peak in California. It has often been declared the most disastrous volcanic eruption in U.S. history. The eruption was preceded by a two-month series of earthquakes and steam-venting episodes caused by an injection of magma at shallow depth below the volcano that created a large bulge and a fracture system on the mountain's north slope. An earthquake at 8:32:11 am PDT (UTC−7) on Sunday, May 18, 1980 caused the entire weakened north face to slide away, creating the largest landslide in recorded history. This allowed the partly molten rock, rich in high-pressure gas and steam, to suddenly explode northward toward Spirit Lake in a hot mix of lava and pulverized older rock, overtaking the landslide. An eruption column rose 80,000 feet (24 km; 15 mi) into the atmosphere and deposited ash in 11 U.S. states and two Canadian provinces. At the same time, snow, ice, and several entire glaciers on the volcano melted, forming a series of large lahars (volcanic mudslides) that reached as far as the Columbia River, nearly 50 miles (80 km) to the southwest. Less severe outbursts continued into the next day, only to be followed by other large, but not as destructive, eruptions later that year. Thermal energy released during the eruption was equal to 26 megatons of TNT.About 57 people were killed, including innkeeper and World War I veteran Harry R. Truman, photographers Reid Blackburn and Robert Landsburg, and geologist David A. Johnston. Hundreds of square miles were reduced to wasteland, causing over $1 billion in damage (equivalent to $3.5 billion in 2020), thousands of animals were killed, and Mount St. Helens was left with a crater on its north side. At the time of the eruption, the summit of the volcano was owned by the Burlington Northern Railroad, but afterward, the railroad donated the land to the United States Forest Service. The area was later preserved in the Mount St. Helens National Volcanic Monument.
Source: Wikipedia
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