oa Botswana Notes & Records - An isokeraunic map of Botswana

Volume 26, Issue 1
  • ISSN : 0525-5090



Occurrences of lightning and thunder have been recorded over two complete rainy seasons, 1991-92 and 1992-93, at 23 stations around Botswana. The estimated keraunic levels, or number of thunder-days per annum, show that the incidence of lightning strikes to ground varies from about 3 km-2 yr-1 in the Central and Kgalagadi Districts to about 8 km-2 yr-1 in the far-north. This paper presents the very first isokeraunic map of Botswana showing the geographical distribution of lightning activity in the country.

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