Wednesday, August 10, 2016

Mount Pinatubo and the No Name Storm

The volcano's eruption on June 15, 1991 produced the second largest terrestrial eruption of the 20th century after the 1912 eruption of Novarupta in the Alaska Peninsula. It injected more particulate into the stratosphere than any eruption since Krakatoa in 1883. Global temperatures dropped by about one degree for the next three years. It was ten times larger than the 1980 eruption of Mount St. Helens.

Typhoon Yunya  was a major typhoon that struck the Philippines at the same  time of the colossal eruption of Mount Pinatubo in June 1991 spreading the fumes and gases globally.


It may have played a role in the 1993 Storm of the Century. The 1993 Storm of the Century marked a milestone in the weather forecasting of the United States. By March 2, 1993, several operational numerical weather prediction models and medium-range forecasters at the United States National Weather Service recognized the threat of a significant snowstorm. This marked the first time National Weather Service meteorologists were able to predict accurately a system's severity five days in advance. Official blizzard warnings were issued two days before the storm arrived, as shorter-range models began to confirm the predictions. Forecasters were finally confident enough of the computer-forecast models to support decisions by several northeastern states to declare a State of Emergency even before the snow started to fall.

Overall, the storm's surge, winds, and tornadoes damaged or destroyed 18,000 homes. A total of 47 lives were lost in Florida due to storm surge. In Florida, this storm was and still is referred to as the "No Name Storm".

The Great Mississippi and Missouri Rivers Flood from April to October 1993 may have been caused by Mount Pinatubo.


Monday, August 1, 2016

101955 Bennu

101955 Bennu (provisional designation 1999 RQ36) is an Apollo asteroid discovered by the LINEAR Project on September 11, 1999. It is the planned target of the OSIRIS-REx mission which is intended to return samples to Earth in 2023 for further study. It is a potential Earth impactor and is listed on the Sentry Risk Table with the third highest rating on the Palermo Technical Impact Hazard Scale.

https://en.wikipedia.org/wiki/101955_Bennu

OSIRIS-REx
https://en.wikipedia.org/wiki/OSIRIS-REx

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101955 Bennu
http://neo.jpl.nasa.gov/orbits/