NEW DELHI: The IMD has forecast heavy rainfall, thunderstorms, lightning and gusty winds in several parts of the states. Heavy to very heavy rainfall is likely at isolated places over Tamil Nadu, Puducherry and Karaikal, while the Andaman and Nicobar Islands, Lakshadweep and south interior Karnataka are also likely to receive heavy rainfall.




Meanwhile, a low-pressure area over the Bay of Bengal is expected to intensify into a cyclonic storm by October 26 and move towards the North Andhra Pradesh and adjoining South Odisha coasts around October 28. The developing system is likely to bring heavy to extremely heavy rainfall to parts of Andhra Pradesh and Odisha, with its effects extending to West Bengal, Jharkhand, Bihar and Chhattisgarh.




Delhi weather tomorrowDelhi is likely to remain dry on Sunday, according to the IMD forecast. Haryana, Chandigarh and Delhi are also listed under the dry category for the day.




Tamil Nadu weather tomorrowThe IMD has forecast heavy to very heavy rainfall at isolated places over Tamil Nadu, Puducherry and Karaikal on October 25 and 26.




Heavy rainfall is also forecast over Tamil Nadu, Puducherry and Karaikal during the October 27-29 period.




Kerala weather tomorrowThe IMD has issued Orange alerts for 12 districts in Kerala for Sunday, October 25, warning of very heavy rainfall. Thunderstorms are also expected in several parts of the state over the next three days.




The districts covered by the Orange alert are Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, Kottayam, Idukki, Ernakulam, Thrissur, Palakkad, Malappuram, Kozhikode and Wayanad.




Yellow alerts have been issued for Kannur and Kasaragod on Sunday, indicating the possibility of isolated heavy rainfall of 64.5 mm to 115.5 mm in 24 hours.




For Monday, October 26, Yellow alerts are listed for 12 districts: Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, Kottayam, Idukki, Ernakulam, Thrissur, Palakkad, Malappuram, Kozhikode and Wayanad.




Andhra Pradesh weather tomorrowThe developing Bay of Bengal system is expected to move towards the North Andhra Pradesh and adjoining South Odisha coasts around October 28.




The IMD has forecast heavy to very heavy rainfall at a few places over North Andhra Pradesh on October 27, with extremely heavy rainfall likely at isolated places.




On October 28, heavy to very heavy rainfall is likely at a few places, while extremely heavy rainfall exceeding 20 cm in 24 hours is forecast at isolated places.




Odisha weather tomorrowRainfall activity is expected to begin along coastal Odisha on October 26 under the influence of the developing system.




The IMD has forecast heavy to very heavy rainfall at a few places over coastal Odisha on October 27. Extremely heavy rainfall is likely at isolated places on October 28, while heavy to very heavy rainfall is also forecast on October 29.




The department has advised fishermen not to venture into the west-central and adjoining northwest Bay of Bengal from October 26 to 29.




Andaman and Nicobar Islands weather tomorrowHeavy rainfall is likely at isolated places over the Andaman and Nicobar Islands on October 25.




On October 26, heavy rainfall is again likely at isolated places over the islands.




Lakshadweep weather tomorrowThe IMD has forecast heavy rainfall at isolated places over Lakshadweep on October 25 and 26.




Karnataka weather tomorrowSouth interior Karnataka is likely to receive heavy rainfall at isolated places on October 25, according to the IMD forecast.




West Bengal weather tomorrowWest Bengal is likely to experience the effects of the developing Bay of Bengal system from Tuesday, October 27, with light to moderate rainfall expected in Kolkata.




Coastal areas of Bengal may experience squally winds, while heavy rainfall is likely at one or two places in some districts between October 28 and 30.




According to H R Biswas of the Regional Meteorological Centre, Kolkata, the state is unlikely to fall in the direct path of the system, but coastal areas may receive a few spells of heavy rain.




The IMD has also issued a warning for fishermen.




Bihar, Jharkhand and Chhattisgarh weatherThe developing system is likely to affect parts of Bihar, Jharkhand and Chhattisgarh through rainfall and squally winds.




The IMD has forecast isolated heavy rainfall in adjoining areas of these states on October 28 and 29.




IMD warns fishermen as sea conditions worsenThe IMD has advised fishermen not to venture into the east-central and southeast Bay of Bengal until October 25. They have also been advised to avoid the west-central and adjoining northwest Bay of Bengal from October 26 to 29.




Sea conditions are currently rough over parts of the Bay of Bengal and are expected to become very rough, followed by high to very high conditions from October 26 to 28.




The department is continuously monitoring the system and will issue further updates as its movement and intensity become clearer.




IMD's latest forecast for the next few daysThe period from October to December is conducive to cyclone formation over the Bay of Bengal. The current low-pressure system is expected to intensify into a depression on October 24, a deep depression on October 25 and a cyclonic storm on October 26.




The IMD has forecast extremely heavy rainfall over coastal Andhra Pradesh on October 27 and 28 and over Odisha on October 28. Heavy to very heavy rainfall is also likely over Odisha on October 27 and 29.




The exact location and timing of landfall remain unconfirmed. The IMD is continuing to monitor the system and has advised people in potentially affected areas to follow official weather updates and advisories.