Over the past few days as Southwest Monsoon slowed a window of thunderstorms opened for the leeward plains of TN. Widespread thunderstorms pushed the seasonal rainfall performance for TN & PDC from -11% to 3%. The last 5 days have contributed nearly 30 mm to the seasonal rainfall tally over TN & PDC. But in…
Author: Chennaiyil Oru Mazhaikkaalam
Shear Zone over South Bay to bring back thunderstorms for TN
The moody Southwest Monsoon continues to swing back and forth with alternating active and weak phases for Peninsular India. These constant mood swings has also meant the 1st half of monsoon has not seen a classic break period. The first classic break in monsoon period is almost upon us looking at how things are shaping…
Break in Monsoon coming up for SWM 2025
Like pretty much every atmospheric phenomenon Monsoon is also an oscillating event. Intra seasonal oscillation is an essential component of Southwest Monsoon. Even as early as 1950s and 1960s researchers started to look at Break in Monsoon phenomenon. People like Dr. C Ramaswamy, P Koteeswaram, both of whom went onto become Director General IMD, studied…
Active Monsoon conditions likely over West Coast
Like most weather events Southwest Monsoon also oscillates during the season. An active monsoon phase followed by a passive phase as the dynamics ebb and flow. The period of these active / passive phases depend on support from Tropical waves. At times larger scale atmospheric base state also plays a crucial role. Some of the…
North TN likely to see widespread rains for next few days
During the Southwest Monsoon on most occasions rains swing like a pendulum. When the West coast and the Ghats are active places in the East coast like North TN remain quiet. When monsoon goes through a break period it is the leeward plains that get active while West coast remains quiet. At times though when…