Lightning streaks across the sky as lava flows from a volcano in Eyjafjallajokul April 17, 2010. (Photo by Lucas Jackson/Reuters)

Lightning is seen during a storm under the Memorial Center in Potocari the night before a mass burial, near Srebrenica July 10, 2012. (Photo by Dado Ruvic/Reuters)

Lightning bolts strike around the Puyehue-Cordon Caulle volcanic chain near southern Osorno city June 5, 2011. (Photo by Ivan Alvarado/Reuters)

Usher Brent Mole stands along a wall as lightning strikes across the sky during a storm delay for the MLB National League baseball game between the Atlanta Braves and New York Mets at Turner Field in Atlanta, Georgia June 15, 2011. (Photo by Tami Chappell/Reuters)

Lightning strikes in Poyang county in Jiujiang, Jiangxi province, July 20, 2010. Much of China has been suffering flooding and landslides after weeks of torrential downpours. (Photo by Aly Song/Reuters)

Lightning illuminates the sky during a thunderstorm over the Swiss Federal Palace in Bern July 17, 2009. (Photo by Michael Buholzer/Reuters)

Lightning is seen above buildings during a storm in central Shanghai August 15, 2012. (Photo by Aly Song/Reuters)

Lightning strikes as Mount Merapi volcano erupts spewing out towering clouds of hot gas and debris, as seen from Ketep village in Magelang, Indonesia's Central Java province November 6, 2010. (Photo by Reuters/Beawiharta)

Lightning strikes over buildings during a thunderstorm in central Bangkok March 26, 2012. (Photo by Sukree Sukplang/Reuters)

Lightning strikes near the town of Searchlight, Nevada as the first storm of the season passes through the western deserts of the United States in the early hours of June 8, 2006. (Photo by Gene Blevins/Reuters)

Lightning strikes over buildings during a thunderstorm in Belgrade June 8, 2011. (Photo by Marko Djurica/Reuters)

An armoured vehicle from the Centurion Company, 2-1 Infantry Battalion, 5/2 Stryker Brigade Combat Team is framed by a bolt of lightning during a storm at Combat Outpost Terminator in Maiwand District, Kandahar Province April 19, 2010. (Photo by Tim Wimborne/Reuters)

Lightning flashes around the ash plume above the Puyehue-Cordon Caulle volcano chain near Entrelagos June 5, 2011. (Photo by Carlos Gutierrez/Reuters)

Lighting strikes over a barn surrounded by a soybean crop in Donnellson, Iowa, July 13, 2012. (Photo by Adrees Latif/Reuters)

Lighting strikes over Saint Joseph cathedral during a storm in Hanoi July 14, 2012. (Photo by Carlos Barria/Reuters)

A bolt of lightning strikes over Tokyo skyscrapers at dusk in Tokyo July 24, 2014. (Photo by Issei Kato/Reuters)

Lightning illuminates the sky offshore Beirut October 29,2008 during a thunderstorm over Lebanon. (Photo by Jamal Saidi/Reuters)

Lightning strikes near a ridge as a storm passes though Death Valley National Park in California just after sunset July 21, 2009. (Photo by Steve Marcus/Reuters)

Lightnings strike over buildings during a thunderstorm in Berlin, June 29, 2012. (Photo by Pawel Kopczynski/Reuters)

Electric lightning bolts ripped through the night sky last night in a striking finale to the year's hottest day. (Photo by Portsmouth News/Solent News & Photo Agency)

A sunflower field is seen in stormy weather near Donzere, southern France, August 5, 2011. (Photo by Pascal Rossignol/Reuters)

In this photo taken on Tuesday, July 22, 2014, lightning from one of many eastern Oregon and Washington thunderstorms crackles over the mountains just south of Tollgate, Ore. (Photo by Greg Lehman/AP Photo/Walla Walla Union-Bulletin)

Lightning strikes the CN Tower during a thunderstorm in Toronto May 29, 2011. (Photo by Mark Blinch/Reuters)

Volcanic lightning or a dirty thunderstorm is seen above Shinmoedake peak as it erupts, between Miyazaki and Kagoshima prefectures, in this photo taken from Kirishima city and released by Minami-Nippon Shimbun January 28, 2011. (Photo by Reuters/Minami-Nippon Shimbun)