World_June_2017_06hr
--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 are stationary or move more slowly from varying directions in the tropics. ~Ron Holle
Jul 5, 2017 Webmaster Archive
Northern Hemisphere --Canada, China, Europe, the Indian subcontinent, and Russia have frequent lightning all month. -- United States lightning is in disorganized clusters in the southeastern states while it is more organized over the rest of the country. --Thunderstorms move to the east-southeast on many days along the southern boundary of the Himalayas. ~Ron Holle
Jul 7, 2017 1:05:43 AM Dave Fincher
Tropics --The east-west aligned equatorial trough, the Intertropical Convergence Zone, becomes better organized through the month over the eastern North Pacific, Indian Ocean, and western Atlantic. --The major islands and land areas of tropical Southeast Asia have thunderstorms nearly every afternoon in sea breezes and along mountain slopes. Motion is usually slow. --Lightning over Africa is mostly between the Equator and the Sahara, and at its southern extent. --A steady progression of easterly waves forms over equatorial Africa that moves west to the Atlantic coast at intervals of three to five days. --Thunderstorms over Brazil are confined to its northern third. --Central America and Mexico have frequent lightning. ~Ron Holle
Jul 7, 2017 1:06:03 AM Dave Fincher
Southern Hemisphere --Several storms form over South Africa and Argentina and move offshore. --Organized thunderstorms move steadily from west to east across the southern oceans. --The Andes south of the equator provide a sharp western boundary in a NNW-SSE line and no lightning occurs over the cold water offshore of the Andes. ~Ron Holle
Jul 7, 2017 1:06:46 AM Dave Fincher
--01 to 02 June: Strong squall line moves across southern Japan to the southeast. --01 to 03 June: The cyclonic circulation of Tropical Storm Beatriz is apparent offshore of southern Mexico. --07 to 11 June: A large unnamed circulation is apparent over the Bay of Bengal. --09 to 12 June: Continuous line of thunderstorms moves east from northern Montana to offshore of Newfoundland. --15 to 19 June: Series of strong squall lines moves southeastward from Missouri region to Gulf Coast. --20 to 21 June: Strong squall line starts in northern Pakistan and moves southeast. --21 to 25 June: New storms begin over the United Kingdom and move eastward until dissipating over Turkey. --28 June: The farthest north lightning is over the New Siberian Islands. --28 to 29 June: A long continuous line of lightning extends from Romania, across Ukraine, to the northern Chinese border. --29 to 30 June: Major north-south line of lightning moves rapidly from Poland to eastern Russia. ~Ron Holle
Jul 7, 2017 1:07:06 AM Dave Fincher