Over the past few days parts of interior Tamil Nadu saw some much needed rains through thunderstorms. Districts like Karur, Dharmapuri, Namakkal, Trichy that were in negative zone for the season benefitted from these rains. Even parts of Chennai got good rains last evening from scattered thunderstorm activity. Peninsular East Coast benefits when westerlies slow…
Tag: ChennaiRains
Brief revival of Monsoon likely along Peninsular West Coast
Over the past few days Peninsular West coast has been fairly in active in terms of rainfall. Since 18th August the daily rainfall chart for Kerala has been below normal. In our last post we talked about how the rainfall deficit for Kerala during August was at 27%. This has now increased to -37% as…
Window of thunderstorms for North Coastal TN
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…
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…