General --March is the first 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 E to W on a daily basis. --Thunderstorms travel W to E over the middle and higher latitudes in both hemispheres, and more slowly from varying directions in the tropics. Northern Hemisphere --Alaska, Canada, China, Europe, and Russia have almost no lightning until late March in southeast China. --The Mediterranean Sea has thunderstorm systems moving W to E through the month. --Over the Indian subcontinent, lightning is over the northern portion and moves quickly from W to E. --Lightning activity in early March over the U.S., Cuba, and Mexico is primarily over the U.S. Gulf Coast. Later, organized storms develop in the Southern Plains and move eastward. ~Ron Holle
Apr 4, 2019 Webmaster Archive
Tropics --The equatorial trough, also called the Intertropical Convergence Zone, is well defined over the Atlantic, sporadic over the Eastern North Pacific, and diffuse over the Indian Ocean. --The major islands and land areas of tropical Southeast Asia have daily thunderstorms in sea breezes and along mountain slopes; they move most often from the W. --Over Brazil, thunderstorms form daily, then move from the E or NE. Individual storms do not travel far or survive into the next day. --Lightning activity over the Philippines, Thailand, Myanmar, Vietnam, and Cambodia increases through March. --Storms form daily during daylight hours over East and Central Africa, and move to the W or SW. --Thunderstorm activity occurs daily over Madagascar, while the Sahara is nearly devoid of lightning. --Central American lightning is sparse during March. ~Ron Holle
Apr 9, 2019 12:27:24 AM Dave Fincher
Southern Hemisphere --The Andes define a sharp western boundary in a NNW-SSE line and no lightning occurs over the cold water offshore of the Andes. --Several large thunderstorms originate in central and northern Argentina. --Over Australia, lightning is most often over the north and east coasts. ~Ron Holle
Apr 9, 2019 12:27:35 AM Dave Fincher
--02 to 11 March: Tropical Cyclone Haleh to east of Mauritius moves from N to S. --04 and 08 March: Lightning forms over northern Argentina and moves E in lines and N in clusters. --08 to 16 March: Tropical Cyclone Idai moves W from Madagascar to Mozambique; major damage in Mozambique. --09 March: Double equatorial trough is well defined in Pacific. --09 to 10 and 13 to 16 March: Major squall lines form in southern Plains and move E across U.S. --12 March: Continuous E to W line of thunderstorms forms simultaneously across most of northern portions of Australia and moves to NW. --16 to 25 March: Tropical Cyclone Trevor moves NE to SW across northeast tip of Australia. --17 March: Major thunderstorm across Abu Dhabi, Dubai and Persian Gulf. --18 to 24 March: Tropical Cyclone Veronica moves NE to SW, then to SE along northwest coast of Australia. --20 to 22 March: Tropical Cyclone Joaninha located SE of Mauritius. --26 to 29 March: Thunderstorms move W to E from northern India to Myanmar to China.
Apr 9, 2019 12:32:11 AM Dave Fincher