Places in Central Tamil Nadu, particularly to the East of Palghat Gap, do not see much rains during Southwest Monsoon. Strong westerly winds create a funnel effect at Palghat gap reducing convection over places further east. Similarly during Northeast Monsoon period they depend on favourable transit of disturbances for sustained rains. About 125 kms separate…
Author: Chennaiyil Oru Mazhaikkaalam
Struggling LPA effectively ends heavy rainfall for Coastal TN
To err on the side of the caution is always the guiding principle for disaster communicators. The cone of uncertainty in cyclone forecasts is a classic example of probability in weather. A small change in dynamics could effectively change path of a cyclone. This could catch out people who may be unprepared if only a…
North Coastal TN may see a 24 hours heavy rainfall event
It is always a tough call when to alert and how much to alert. During Cyclone Fengal as the models aligned tighter on a possible stall it became essential to raise the alert about the risks. The experience of a complex event like Cyclone Fengal is always in the back of the mind during subsequent…
Fresh Low likely to bring tense days to North Coastal TN
So far this Northeast Monsoon season Chennai and suburbs has been relatively stress free. Despite both IMD observatories recording more than 96 cms for the NEM season. Both Nungambakkam and Meenambakkam have recorded more than 175 cms for the year 2024. 2024 is now the 5th consecutive year where the average rainfall has been normal…
Late Season Surge by NEM 2024
Dhanushkodi Cyclone of 1964, Sri Lanka cyclone of 2000, Thane during 2011 all formed during 2nd fortnight of December. All of them have one other thing in common, these were La Nina years, which saw late season surge. Northeast Monsoon more often than not has seen late season surge during La Nina years. While there…