Cyclone Senyar formed over the Strait of Malacca on Wednesday after a deep depression intensified, the IMD said. The storm is moving west at 10 kmph and is expected to make landfall on the Indonesia coast this afternoon. Winds may reach 70 to 90 kmph. A second weather system over the southwest Bay of Bengal has also strengthened and may turn into a depression soon. Both systems are bringing heavy rain to the Andaman and Nicobar Islands, Tamil Nadu, Andhra Pradesh and Kerala. Parts of Tamil Nadu are flooded after earlier rains, and schools were closed on Tuesday for safety. (PC: X)

Record floods have hit southern Thailand, killing at least 18 people and cutting off many towns. Hat Yai saw its heaviest rain in 300 years, with 335 mm falling in one day. Homes and cars are underwater, and thousands are trapped on rooftops waiting for help. More than 2 million people are affected, but only 13,000 have reached shelters. The Thai military has sent ships, helicopters, and trucks to rescue people. A navy carrier may be used as a floating hospital. Floods have also hit Vietnam and Malaysia, where thousands more have been forced from their homes. (PC: BBC)

A plume of ash from the eruption of Hayli Gubbi in Ethiopia on 23 November reached Indian airspace late on 24 November, drifting over Gujarat, Delhi-NCR, Rajasthan, Punjab and Haryana. The India Meteorological Department (IMD) reports that as of ~10:30 pm on 25 November the ash cloud had entirely exited Indian territory. While aviation was affected — with flight cancellations and delays — there is currently no impact on surface weather or air quality over North India. (PC: X)

The Civil Aviation Ministry said on Tuesday that flights across India are operating normally, even as volcanic ash from Ethiopia’s Hayli Gubbi eruption drifts eastwards. Only a few flights were rerouted or made to fly lower as a safety step. The ministry said it is working with ATC, the IMD, airlines and global agencies to track the ash cloud. The IMD said the ash moved over parts of Gujarat, Delhi-NCR, Rajasthan, Punjab and Haryana. It is expected to leave Indian airspace by 7:30 pm. The volcano erupted on Sunday, sending ash 14 km high. Monitoring and advisories continue.

The IMD said the ash cloud from Ethiopia’s Hayli Gubbi volcano will leave India by Tuesday evening. The ash entered Gujarat and Rajasthan on Monday, moved near Delhi around midnight, and travelled across east and northeast India through Tuesday. IMD chief M Mohapatra said the particles are at 8–15 km height, so there is no impact on air quality or public exposure. The main risk is to flights over Delhi, Mumbai and Kolkata. The ash cloud is now moving towards China. IMD also forecast heavy rain for Tamil Nadu, Kerala, Andhra Pradesh and Andaman & Nicobar Islands this week. (PC: HT)

Volcanic ash from Ethiopia’s Hayli Gubbi eruption has spread across several parts of India, including Delhi, Gujarat, Rajasthan, Maharashtra, Punjab and Haryana. The ash cloud entered India on Monday night and is moving at speeds of up to 120 km/h at high altitudes. It contains ash, sulphur dioxide and fine rock particles. The IMD said the plume will leave India by 7:30 pm on Tuesday as it moves toward China. Airlines have already cancelled several flights due to safety concerns. Weather teams are closely tracking satellite data and advisory updates as the cloud continues to shift eastward.

The India Meteorological Department (IMD) has said that a well-marked low-pressure area near Malaysia may turn into Cyclone ‘Senyar’ within 48 hours. The system is moving towards the south Bay of Bengal and may first become a depression over the south Andaman Sea in the next 24 hours. IMD reported strong convection, winds up to 30 knots, and moderate sea conditions. If it strengthens, the storm will be named ‘Senyar’, meaning “lion”. Heavy rain is expected in Tamil Nadu, Kerala, Lakshadweep, Andaman and Nicobar Islands, and coastal Andhra Pradesh over the coming days. Thunderstorms and strong winds are also likely. (PC: India Today)

The Hayli Gubbi volcano in Ethiopia has erupted for the first time in around 10,000 years. The eruption sent a massive ash and sulfur-dioxide cloud up to 15 km high over the Afar region. Satellite images first detected the blast in the remote Danakil Depression. The ash cloud moved across the Red Sea toward Yemen and Oman, causing aviation alerts and air-quality warnings. Some flights in the region were diverted, including an IndiGo flight to Abu Dhabi. Experts say the area is too difficult to access, so monitoring will continue through satellite data. Scientists call the eruption rare and highly significant.

Delhi has ordered all government and private offices to work with only 50% staff on site, while the rest must work from home. The decision comes as the city’s air quality stayed close to the ‘severe’ mark, with an AQI of 382 on Monday. The government asked offices to use staggered work hours and reduce vehicle use. Essential services like hospitals, transport, power, water and sanitation are exempt. Many monitoring stations recorded pollution levels above 400. Delhi has also enforced staggered timings for government offices. The city remains under Stage 3 of the GRAP curbs since November 11. (PC: HT)

A huge ash cloud from Ethiopia’s Hayli Gubbi volcano is moving towards northwest India and may affect Gujarat, Rajasthan, Delhi-NCR and Punjab. The ash is 10–15 km above the ground and is mainly a threat to flights. Airlines have begun cancelling and rerouting flights, with more disruption expected on Tuesday. IndiGo has already cancelled six flights. IMD says the ash will make the sky hazy but will not affect the surface much. However, experts warn it could worsen pollution. Delhi’s AQI was already near the “severe” mark on Monday. Officials are closely monitoring the situation. (PC: Afar Government Communication Bureau via AP)