Environment
IMD sees wet spell for South Peninsula as monsoon withdraws
The Hindu BusinessLine··30 Sept
India Meteorological Department outlook points to continued rain across the South Peninsula as the south-west monsoon begins withdrawing. Kerala and Mahe may see fairly widespread to widespread rainfall for six days from Thursday. An upper-air cyclonic circulation sat over north coastal Tamil Nadu on Wednesday. Wednesday is the official final day of the four-month south-west monsoon season.
Prism
What It Means For You
- Coastal Karnataka is forecast for fairly widespread rain on Thursday and Friday.
- Tamil Nadu, Puducherry and Karaikal face thunderstorms, lightning and gusty winds for three days from Wednesday.
- North-east monsoon conditions over the South Peninsula are expected from around mid-October.
What's Happening
- A Bay of Bengal depression weakened into a well-marked low over North Myanmar and adjoining areas.
- ECMWF guidance shows rain and seasonal thunderstorms as the south-west regime gives way.
- A north-south trough ran from South Interior Karnataka across Tamil Nadu to the Gulf of Mannar.
Withdrawal line still stuck
- The retreat line has stayed near Gurdaspur, Chandigarh, Muzaffarnagar, Aligarh, Dholpur, Udaipur, Deesa and Naliya.
- Successive Bay depressions delayed the monsoon’s final retreat for several days.
- Withdrawal is expected to advance across East, North-East and Central India from Wednesday.
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