Chennai: The Indian Meteorology Department faces a flak for his failure to estimate heavy rainfall in Chennai on Thursday.
Why does IMD fail to estimate heavy rain? According to IMD, an Eastern Palung, an extended area with low pressure, which triggered rain in Chennai and the suburbs on Thursday, initially should bring a heavy spell to the districts in the south of the city on Friday.
Instead, it moved quickly to Bengal Bay, suddenly pushing rain clouds over the city.
Once up the beach, it remains stationary for a long time.
This brought heavy rainfall to the city on Thursday.
Land observations and satellites do not take sudden movements.
N Puvarasan, Director, Area Cyclone Warning Center, IMD, told TII that the East Trough extended from south to Tamil Nadu Utara led to the formation of a cloud that moves on the coast of the city and remains silent.
The movement of the Eastern and Clouds is supported by the Western Palung on it at a height of 10 km.
“It was a weak trough above the Bay of Bengal, which we noticed to bring heavy rainfall on Friday to areas such as Cuddalore, Puducherry and Chengelpet, based on the speed of the movement.
On the east side of this trough, there are convergence and on the west side there are divergence.
Convergence causes cloud formation.
Now the cloud of this rain bearing moves quickly on the city of the city and remains stationary carrying a steady heavy mantra.
There is no land or satellite observation capable of taking this.
Usually in such weather conditions, it is difficult to estimate where Precisely, “he said.
“Solid network land-based instruments can increase our accuracy but to estimate where exactly it will bring heavy rain still difficult,” added Puvarasan.
On Friday, IMD estimated storms with rainfall which was very heavy than one or two places in the city and suburban in the next 48 hours.
The maximum and minimum temperature tends to be around 30 degrees Celsius and 21 degrees Celsius.
Why IMD cannot predict heavy rainfall
