1. Department of Forestry, Nkhalango House, Lilongwe, Malawi
2. Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa
3. Department of Research and Development, South African Weather Service (SAWS), Pretoria, South Africa
4. Department of Geography, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Durban, South Africa