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Lightning Animations (492 videos)

SA_Nov15_24HR

--November is the last month of meteorological spring in the Southern Hemisphere. --Most lightning over land is during the day. --The Andes usually provide a sharp western boundary in a NNW-SSE line and no lightning occurs over the cold water offshore of the Andes. --New thunderstorms often form over southern Brazil, move NE, then NE and NW in a generally counter-clockwise pattern. --The equatorial trough, also called the Intertropical Convergence Zone, is intermittent in an east-west alignment over the Atlantic Ocean westward from Africa. --Areas of frequent daily formation of thunderstorm complexes are 1) east-central Brazil, and 2) NE Argentina to Paraguay and Uruguay. --The South Atlantic and South Pacific Oceans are nearly lightning-free except for a few storms over South America that extend to the east. --The eastern tip of Brazil has no lightning during November. ~Ron Holle

Dec 1, 2015 Webmaster Archive

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--12 November: The farthest south lightning of the month occurs southwest of the southern tip of Chile near Antarctica. --08 to 13 November: Storms form in the lee of the Andes to the east along the Argentina-Chile border and move eastward. Several similar events occur later in the month. --18 to 23 November: Strong clearing occurs from south to north over Argentina northward to southern Brazil as a cold front brings in drier air. The northern east-west boundary of the clearing is a large area of intense thunderstorms. ~Ron Holle

Dec 3, 2015 12:10:05 AM Dave Fincher