The simulation of the heavy precipitation
event over the Southeast of Thailand on
5 November 2009 was carried out with
WRF model. All of the vorticity, horizontal
divergence and velocity, calculated from
model output, were good approximation
with the calculations from NCEP data.heavy rainfall mechanism. Also, the negative
vortex over the South China Sea, Northeasterly
winds flowing into southern east-coast of
Thailand, and the moisture lifted over the
windward side induced heavy rainfall over the
area on 5 November 2009.