SoAmer_24hr_Nov_2018
--Most lightning near the equator is over land and during the day as shown by pulsing white colors. --Over all of Brazil but the eastern tip, daily thunderstorms form, then move from the east or northeast. Individual storms do not travel far or survive into the next day. --The equatorial trough, also called the Intertropical Convergence Zone, is often well defined over the Atlantic and more sporadic over the Eastern North Pacific. --Central American lightning is frequent in early November, and then almost disappears by the end of the month. --The Andes provide a sharp western boundary in a NNW-SSE line and no lightning occurs over the cold water offshore of the Andes. --Organized thunderstorms form often over northern Argentina and Uruguay, and move NE. --03 to 04 November: Large cluster of lightning from Argentina and Uruguay moves NE. --11 to 12 November: Equatorial trough is well defined in Atlantic. --23 to 24 November: Large cluster of lightning moves NE from Argentina. ~Ron Holle
Dec 3, 2018 Webmaster Archive