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Contact injury: injury that occurs when a person is touching an object on the pathway of lightning; Ground current: lightning strikes nearby and the current travels through the ground to the person; Lightning injury may occur by these electrical mechanisms or by secondary blunt trauma as a result of the strike. [12]
Global map of lightning frequency--strikes/km 2 /yr. The high lightning areas are on land located in the tropics. Areas with almost no lightning are the Arctic and Antarctic, closely followed by the oceans which have only 0.1 to 1 strikes/km 2 /yr. The map on the right shows that lightning is not distributed evenly around the planet. [5]
The heat-related death rate in the U.S. (heat being either an underlying or a contributing cause) has increased since the mid 2010s. [4]Between 1979 and 2014, the death rate as a direct result of exposure to heat (underlying cause of death) generally hovered around 0.5 to 1 deaths per million people, with spikes in certain years.
Lightning kills around 20 people in the United States. and results in hundreds of injuries each year, according to the National Weather Service.. One of the latest victims was William Friend, the ...
According to the National Oceanic and Atmospheric Administration (NOAA), lightning strikes are responsible for an average of 20 to 30 fatalities and 100 injuries each year in the U.S. Based on ...
Being hit directly by a lightning bolt and becoming part of the main channel of electricity flowing from the cloud to the ground is one of the least common ways to be struck by lightning, Dr. Mary ...
Lightning currents have a very fast rise time, on the order of 40 kA per microsecond. Hence, although lightning is a form of direct current, conductors of such currents exhibit marked skin effect as with an alternating current, causing most of the currents to flow through the outer surface of the conductor. [32]
There's a mesmerizing new project from an organization called Blitzortung.org that lets you see real-time lightning strikes around the world. It works using a network of volunteers willing to ...