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Lightning Animations (492 videos)


--April is the middle month of meteorological spring in the Northern Hemisphere. --April lightning over the United States is very frequent in well-organized lines and clusters that usually start on the Plains and move eastward for several days. --The east-west aligned equatorial trough, the Intertropical Convergence Zone, is frequently apparent over the eastern North Pacific and western Atlantic. Sometimes there are parallel lines in an east-west orientation. --The only April lightning over Canada and Alaska is in the southern Canadian provinces. --Central America and Mexico have minimal lightning until the last half of April. --Daily thunderstorms over Brazil move from the east, but individual storms do not travel far. ~Ron Holle

May 2, 2017 Webmaster Archive

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--02 April: First of several large thunderstorm complexes form in southern Plains and move east. --11 to 13 and 29 to 20 April: Frequent lightning in the vicinity of Hawaii. --12 to 13 April: Storms form in Texas and move south into Mexico. --13 to 14 April: A stationary cyclonic circulation is apparent northeast of the Caribbean islands. --29 to 30 April: Long, intense west to east line of lightning extends from Texas to east coast. --30 April: New south-north line initiates in southern Plains is associated with tornadoes and high winds. ~Ron Holle

May 3, 2017 9:36:15 PM Dave Fincher