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Lightning Animations (492 videos)

World_24hr_Apr_2018

--April is the Middle month of meteorological spring in the Northern Hemisphere, and of autumn in the Southern Hemisphere. --By tracking the latest hours in white, the overhead sun can be seen moving east to west on a daily basis. --Thunderstorms travel west to east over the middle and higher latitudes in both hemispheres, and move slowly from varying directions in the tropics. --Extensive lightning activity over Saudi Arabia, especially along the southern Red Sea coastline into Yemen. --April lightning over the United States is mainly in well-organized lines and clusters that usually start on the Plains and/or Southeast states and move eastward for several days. --Alaska, Canada, and Russia have very few strokes during April. --Central America, China, Europe and Mexico lightning increases during the course of April. ~Ron Holle

May 8, 2018 Webmaster Archive

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--The equatorial trough, also called the Intertropical Convergence Zone, is in a northeast-southwest alignment between Ivory Coast and northeast Brazil over the Atlantic. It is often well defined over the Eastern Pacific, but difficult to identify over the Indian and Western Pacific Oceans. --The major islands and land areas of tropical Southeast Asia have thunderstorms nearly every afternoon in sea breezes and along mountain slopes; they often move from the east. --Thunderstorms are frequent over the Indian subcontinent, Thailand, Laos, Cambodia, and New Zealand. --The northern boundary of thunderstorms over Africa steadily shifts northward during April. --Daily thunderstorms over Brazil move mainly from the east but individual storms do not travel far or survive into the next day. ~Ron Holle

May 14, 2018 9:51:51 PM Dave Fincher

Southern Hemisphere --The Andes provide a sharp western boundary in a NNW-SSE line and no lightning occurs over the cold water offshore of the Andes. --The South Atlantic and South Pacific Oceans away from the continent are usually lightning-free. --Over Australia and New Zealand, lightning is less frequent in April than during prior months. --Madagascar has thunderstorms every day in April. ~Ron Holle

May 14, 2018 9:52:06 PM Dave Fincher

--01 to 02, 08 to 13, 18 to 20, and 26 to 30 April: Largest of major squall lines move from northwest to southeast across northeast India and Bangladesh. --03 to 04 April: Continuous line of lightning from Texas to Ohio in afternoon; severe wind and hail and a few tornadoes. --09 to 11 April: Long frontal boundary over western Atlantic. --09 to 11 April: Thunderstorms form over Argentina and move offshore over the South Atlantic. --12 to 14 April: Equatorial trough is well defined in the eastern Pacific. --14 to 16 April: Squall line extends from Mexican border to Great Lakes, and then moves southeastward. --20 to 22 April: System moving to the west-southwest off Ghana and surrounding nations is largest of several similar events during April. --26 to 27 April: Large system moves west to east south of South Africa. ~Ron Holle

May 14, 2018 9:52:26 PM Dave Fincher