World_24hr_Jun_2018
General --June is the first month of meteorological summer in the Northern Hemisphere, and of winter 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. ~Ron Holle
Jul 2, 2018 Webmaster Archive
Northern Hemisphere --June lightning over the United States occurs in both large and small systems, clusters, and lines across nearly all of the country. --Scattered lightning activity is apparent in lines and small clusters over all of Europe during June. --Eastern Alaska, Western Canada, China, and Russia have frequent lightning during June in varying configurations. --Mexico and Florida have daily lightning during most of the month. ~Ron Holle
Jul 10, 2018 1:03:25 AM Dave Fincher
Tropics --The equatorial trough, the Intertropical Convergence Zone, is often weak in June. --The major islands and land areas of tropical Southeast Asia and the Americas have daily thunderstorms. --Every few days in June, a squall line develops near Ethiopia and moves westward to the west coast of Africa. --Over Brazil, daily thunderstorms over the northern portion of the country move from the east. Individual storms do not travel far or survive into the next day. --The southern boundary of thunderstorms over mainland Africa is usually at, and north of the Equator during June. ~Ron Holle
Jul 10, 2018 1:03:43 AM Dave Fincher
Southern Hemisphere --A continuous series of organized lightning-producing systems travels the southern oceans from west to east during June. --Minimal lightning occurs over the Andes; only a few storms form over Uruguay in June. --Australia and New Zealand lightning is in a few organized systems in June. ~Ron Holle
Jul 10, 2018 1:03:53 AM Dave Fincher
Specific --08 to 18 June: Two large cyclonic circulations move west to east for days across the South Atlantic into the Indian Ocean. --09 to 12 June: Large thunderstorm complexes move northwest to southeast over central and eastern India. --11 to 14 June and subsequent days: Thunderstorms form over Uruguay and move eastward. --16 to 17 June: Several squall lines/tropical waves move east to west across continent of Africa. --16 to 21 June: Turkey is often covered by lightning. --22 June: Four storms traveling eastward in South Atlantic and Indian Oceans. --22 to 25 and 27 to 29 June: Large systems move steadily from the west over the South Atlantic. --26 to 27 June: Two squall lines from Kentucky to Ohio have over one million mostly in-cloud strokes. --26 to 28 June: Strong squall line/tropical wave moves toward Dakar but dissipates offshore. --26 to 30 June: A very large cyclonic circulation is nearly stationary over Kazakhstan and southern Russia. ~Ron Holle
Jul 10, 2018 1:04:06 AM Dave Fincher