Lightning_total_compass.pptx - Lightning-caused Forest Fires \u2013 Natural Part of Forest Ecosystem 450 400 350 300 1940 1941 1942 1943 1944 1945 1946

Lightning_total_compass.pptx - Lightning-caused Forest...

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Lightning-caused Forest Fires – Natural Part of Forest Ecosystem
1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 0 50 100 150 200 250 300 350 400 450 500 50 yr average ~600 struck/yr ~60 die/yr 10 yr average 27 die/yr cost per year: $4-5 Billion US Lightning Fatalities
Lightning Basics Lightning = electrical discharge (spark) Contains 1+ Billion Volts, 30,000+ amps Wall outlet: 110 Volts, 15 amps Length = typically about 5km long Width = 1 inch (2-3 cm) 100 strikes per second on earth 9 million per day Temp = 30,000°C (5X hotter than sfc of the Sun)
20,000,000 – 30,000,000 cloud-to-ground lightning strikes per year in US Lightning is a Common Occurrence. Here’s November 2018
National Lightning Detection Network
National Lightning Detection Network
Lightning Detection Sensor
Side view National Lightning Detection Network
Worldwide Lightning Distribution
US Lightning Distribution
Florida: Lightning capital of the US twice as many fatalities than any other state Lightning Deaths by State
Lightning Power Output For a 5 km long bolt: Amps (current) = 15,000-30,000 amperes Energy = 1-10 billion Joules only 10 million are electrical (the rest are heat) 1 kilowatt-hour = 3.6 million Joules Typical house Uses ~500 kW-hours of electricity per month 1.8 billion Joules of energy One bolt can power one house for up to 5.5 months if all the energy from a bolt is used If only the electrical about 6 hours
Review of Electricity Charge within an atom comes from: Protons ( ) and electrons ( ) Ion = an atom with too few or too many electrons

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