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Lightning Animations (492 videos)


--Mayis late spring in the Northern Hemisphere, and late autumn in the Southern Hemisphere. --Note that by tracking the latest hours in white, the overhead sun can be seen to move E to W on a daily basis. --Over the middle and higher latitudes in both hemispheres, systems are traveling west to east. --In the tropics, thunderstorms typically move from east to west. --The equatorial trough, also called the Intertropical Convergence Zone, appears intermittently during May in the Atlantic, east Pacific, and Indian Oceans. --Well-organized areas of thunderstorms move eastward from the E coasts of large land masses in the middle latitudes of South America, South Africa, and Australia. --In South America, the Andes provide a sharp western boundary in a generally NNW-SSE line. No lightning occurs over the cold water offshore of the Andes. --Except during the middle of May, a sharp WNW-ESE line of lightning forms in the afternoon at the base of the Himalayas over Nepal and northern India. ~Ron Holle

Jun 2, 2014 Webmaster Archive

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--Thunderstorms initiate over Ethiopia on many days and move W or SW across the African continent. --Thailand, Cambodia, Vietnam, Malaysia, and Borneo have significant lightning all month. --The western half of the Sahara has intermittent lightning during the first half of May. --01 to 03, 12 to 13, and 30 to 31 May: Thunderstorm complexes over northern India move quickly from WNW to ESE. --10 to 13 May: A large disturbed area of convection is located over the NE Caribbean. --12 to 20 May: Sea breeze thunderstorms form on both the north and south coasts of the Gulf of Oman. --13 to 15 May: A major lightning-producing system plunges south from Texas into Central America and the NE Pacific. --16 to 18 May: Over the North Atlantic, a well-defined circular cutoff low is evident. --19 to 22 May: A remarkably continuous line of isolated thunderstorms starts over Ukraine and moves NW, then N over Finland, and races to the E over Russia until it dies moving SE over Kazakhstan. ~Ron Holle

Jun 3, 2014 11:36:48 PM Dave Fincher

--21 to 30 May: A series of waves in the easterlies leave West Africa and extend part way across the Atlantic toward South America. ~Ron Holle

Jun 3, 2014 11:37:07 PM Dave Fincher