The IMD cyclone alert issued on October 25 confirms a low-pressure system over the southeast Bay of Bengal is set to intensify into a “very severe” cyclonic storm by October 28, with Tamil Nadu, Kerala, Karnataka, Andhra Pradesh, and Odisha all placed under rain warnings through the week. Red alerts are already active in parts of Kerala and Tamil Nadu.
Key Takeaways
- A Bay of Bengal depression is likely to turn into a cyclonic storm around October 26, intensifying further into a very severe cyclonic storm near the Andhra coast by October 28.
- Kerala has five districts under red alert; Tamil Nadu’s delta and coastal belts face heavy to very heavy rain through the weekend.
- Karnataka’s coastal and Malnad districts, including Mangaluru and Udupi, are under a yellow alert for the next 48 hours.
- Fishermen along the entire east coast, from Odisha to Tamil Nadu, are advised not to venture into the sea until the system clears.
This isn’t a drill, but it isn’t a reason to panic either. The IMD cyclone alert gives us roughly 72 hours of lead time, and that’s enough to plan around, not scramble around. Let’s break it down by the clock, the way IMD bulletins are meant to be read.
Where Is the System Right Now?
As of this morning, the depression sits over the southwest and adjoining southeast Bay of Bengal, a few hundred kilometres off the Tamil Nadu-Andhra Pradesh coastline. IMD’s Chennai and Visakhapatnam regional centres are tracking it on a near north-northwest path. By tonight or early tomorrow, it is expected to consolidate into a cyclonic storm, picking up a name under the India Meteorological Department’s regional naming list once that threshold is crossed.
What matters practically is the rain band ahead of the core, which is already dumping moisture over Kerala’s Ghats and Tamil Nadu’s southern districts, even before the system has fully organised. That’s the part residents are feeling first.
What Happens in the Next 12 Hours?
Expect the depression to firm up into a cyclonic storm somewhere over the southwest Bay of Bengal. Coastal Tamil Nadu — Nagapattinam, Cuddalore, Thoothukudi, and parts of Chennai’s outer taluks — should see intermittent heavy spells, the kind that flood underpasses faster than they flood open fields.
In Kerala, Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, and Idukki remain under red alert, meaning rainfall could cross 20 cm in a 24-hour window in isolated pockets. If you’re in a hill-adjoining panchayat in Idukki, this is the window to avoid unnecessary travel on ghat roads.
What Happens in the Next 24 Hours?
By October 26, IMD expects the system to be a well-marked cyclonic storm, tracking closer to the Andhra Pradesh coast. Karnataka’s coastal belt, including Mangaluru, Udupi, and parts of Dakshina Kannada, moves from yellow to a possible orange alert if the rain bands widen as forecast. Bengaluru itself stays on yellow, with scattered heavy showers rather than a sustained downpour.
This is also the stage where port authorities at Chennai, Kakinada, and Visakhapatnam typically begin advising smaller vessels to return to harbour. If you know anyone in the fishing community along this stretch, this is the day to make sure they’ve heard the advisory directly, not secondhand.
What Happens in the Next 48 Hours?
October 27 is when the system is forecast to reach cyclone intensity proper, with wind speeds climbing toward 90-100 kmph near the core. The track currently favours a landfall near the north Andhra Pradesh or south Odisha coast on October 28, somewhere in the Srikakulam-Ganjam stretch, though the exact point can still shift by 50-100 km either way as the system matures. That margin is normal at this range and isn’t a sign the forecast is unreliable.
Odisha’s Ganjam, Gajapati, and Puri districts should treat this as the window to confirm cyclone shelter locations with the local tehsildar’s office, especially in low-lying taluks near the coast. Andhra Pradesh’s Srikakulam and Vizianagaram administrations are likely to pre-position NDRF and SDRF teams by this point, following the same drill used during Cyclone Michaung in 2023.
District-Wise Alert Snapshot (October 25-28)
| State | Districts Most Affected | Alert Level | Key Risk Window |
| Kerala | Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, Idukki | Red | Oct 25-26 |
| Tamil Nadu | Nagapattinam, Cuddalore, Thoothukudi, Chennai (outskirts) | Red/Orange | Oct 25-27 |
| Karnataka | Mangaluru, Udupi, Dakshina Kannada, Bengaluru | Yellow | Oct 25-27 |
| Andhra Pradesh | Srikakulam, Vizianagaram, Visakhapatnam | Orange/Red | Oct 27-28 |
| Odisha | Ganjam, Gajapati, Puri | Orange | Oct 27-28 |
How Does This Compare to Past Bay of Bengal Cyclones?
This IMD cyclone alert carries echoes of Cyclone Michaung, which crossed the Andhra coast in December 2023 after dumping record rain on Chennai. The present system is forming earlier in the season and farther south, which is one reason Kerala and Tamil Nadu are seeing the heaviest rain first, ahead of any landfall. You can track the live bulletin updates directly on the India Meteorological Department’s official site, which updates its cyclone warnings roughly every three hours once the system intensifies.
The original angle worth noting here: unlike Michaung, which stalled near the coast and caused flash flooding mainly from stationary rain, this system is moving at a steadier clip. That generally means shorter, sharper rain bursts rather than days of continuous downpour — good news for drainage-stressed cities like Chennai, less good news for anyone caught outdoors when a burst hits.
What Should Residents Actually Do?
- Keep phones charged and know your taluk’s nearest designated shelter, especially in Idukki, Ganjam, and Srikakulam.
- Avoid ghat roads and riverbank paths during the red-alert window, even if the rain looks like it’s pausing.
- Fishermen along the entire east coast should stay off the water until IMD lifts the advisory, not just until the rain stops.
- Farmers in the delta districts should move harvested stock to higher ground before October 27.
Imd Cyclone Alert FAQ
Will the Bay of Bengal system definitely become a cyclone?
IMD’s current confidence is high that the depression intensifies into a cyclonic storm by October 26, with further strengthening likely through October 27-28.
Which state will see the worst impact?
Kerala and Tamil Nadu face the heaviest rain risk in the next 48 hours, while Andhra Pradesh and Odisha are more exposed to the eventual landfall around October 28.
Is Bengaluru at risk from this cyclone?
Bengaluru stays on a yellow alert for scattered heavy showers but isn’t in the direct path of the system’s core.
Where is the cyclone expected to make landfall?
Current tracks point to the Andhra Pradesh-Odisha border, near Srikakulam or Ganjam, though this can shift as the system develops.
How often does IMD update this cyclone alert?
Bulletins are refreshed every three to six hours as the system intensifies, with more frequent updates closer to landfall.
None of this calls for alarm, just attention to the timeline. Follow the 12-24-48 hour windows above, keep an ear on local district announcements, and this IMD cyclone alert becomes a planning tool rather than a source of dread.