There’s a familiar rhythm to late-September weather in eastern India: a system stirs up somewhere over the Bay of Bengal, and within days, half the country is checking IMD bulletins. This week, that system has a name in all but title a deep depression that formed off the Andhra-Odisha coast and has since pushed rain warnings as far north as Uttar Pradesh and Bihar.
The system didn’t come out of nowhere. It started as a modest low-pressure area near the Andaman Sea, then thickened into a depression, and finally a deep depression, as it tracked west-northwest toward land. It came ashore near Kalingapatnam the stretch of coast between Visakhapatnam and Gopalpur carrying gusty winds of 60 to 80 kmph and dumping extremely heavy rain on northern Andhra Pradesh and southern Odisha before continuing its march inland.
What makes this one worth watching isn’t just the coast it’s how far the effects are traveling. Coastal Andhra Pradesh, Odisha, Telangana, and Chhattisgarh are bearing the brunt, with some pockets expected to cross 200 mm of rain and the IMD issuing orange-to-red alerts accordingly. But the ripple effects don’t stop there. Bihar, Jharkhand, West Bengal, Konkan, Goa, and pockets of Maharashtra are all under wind advisories of 40-50 kmph, and the rain belt itself stretches even further into Assam, Meghalaya, Karnataka, Kerala, and Sikkim, where totals of 60-115 mm are expected alongside thunderstorms.
The reason UP and Bihar are in the picture at all comes down to geography most people don’t think about: the monsoon’s axis essentially its spine currently runs right through Rajasthan, UP, and Bihar before connecting to the depression itself and stretching out toward Bangladesh and Assam. When that axis lines up with an active system like this, rain gets pulled along it like water down a channel.
There’s a bit of good news buried in the forecast, too. Central India should start drying out from around September 28, even as the rain shifts northeast toward Bihar, Jharkhand, and eastern UP. And oddly, while this system is soaking the east, it’s actually helping the monsoon pack up in the northwest Punjab, Haryana, Delhi, and neighboring states are expected to see conditions turn favorable for withdrawal in the next few days.
If you’re in the affected belt: keep an eye on local IMD updates rather than national ones conditions can shift by district. Skip nonessential travel if your area’s under an orange or red alert, watch for waterlogging in the usual low-lying spots, and if you’re anywhere near the coast, this isn’t the week to be out on the water.