This paper presents the results from 5 February 1999. This day was classified as a weak monsoon regime where convection developed in response to the diurnal cycle of solar heating. Scattered shallow cumulus during the morning developed into deep convection by early afternoon. A total of 303 storms initiated within 130 km of S-pol on this day. Initiation began about 1100 LT and the initiation of cells peaked around 1500-1600 LT.
Storms tended to first form over the higher terrain. Many of these storms generated cold pools with associated gust fronts. New storms were then initiated by the gust fronts typically on the downwind shear side. With time gust fronts would collide and initiate new storms which tended to be the more intense and longer lived storms.
The causes of storm initiation were classified into 7 categories that will be described in the paper. The most common initiation mechanisms were along a gust front (27%), over high terrain (>300 m) without any other triggering mechanism (20%) and colliding gust fronts (16%). An initiation cause could not be determined for 21% of the 303 cases.
Comments will be provided on 1) implications these results may have on convective storm nowcasting systems, and 2) the effect deforestation may have on storm initiation.