The Inter Tropical Convergence Zone (ITCZ) running from Indonesia to southeast Arabian Sea, across the southern tip of India, could also be attributed to light and scattered rain in the region. Rain will continue here at least for next 24 hours.
In a span of 24 hours from 8.30 am on Tuesday, southern parts of Kerala received good showers. Alappuzha received 0.8 mm of rain, Punalur 17.2 mm of rain, Thiruvananthapuram 34.1 mm and Kochi 35.2 mm. Tirthala in the Palakad district of Kerala received 19.4 mm of rain, Ernakulum 43 mm and Chalakudy 18.2 mm.
The monthly average rainfall in Punalur is 211 mm, Kottayam 133 mm, Kochi 95 mm and Kozhikode 72 mm. By looking at the figures, we can say that rain decreases on its way up the coast of Kerala. And a similar condition can be witnessed at present.