Cyclone Arnab is expected to affect weather conditions across several parts of India, with the India Meteorological Department (IMD) warning of heavy rainfall and strong winds. According to the information provided, 18 states are under a weather alert, with wind speeds potentially reaching 95 kilometres per hour in some areas. Authorities have also cautioned fishermen against venturing into the sea because of rough conditions and the possibility of high waves. Fishing activities have reportedly been restricted until Thursday, while fishermen already at sea have been advised to return to shore. Landslides are also a concern in hilly regions.

States Under Weather Alert
The states listed in the forecast include Uttarakhand, Himachal Pradesh, Madhya Pradesh, Punjab, Haryana, Karnataka, Gujarat, Maharashtra, Uttar Pradesh, Bihar, Delhi, Rajasthan, Jharkhand, West Bengal, Tamil Nadu, Assam, Tripura, Nagaland and Mizoram. The reported list contains 19 states, although the initial announcement refers to 18. Residents in affected areas are advised to follow official weather bulletins and local administration instructions.

Rain and Strong Winds Expected in Delhi and Rajasthan
Delhi may experience thunderstorms, lightning and rainfall on October 29, with winds forecast to reach 30–40 kmph. Temperatures are expected to remain relatively mild, with a maximum of around 27–30°C and a minimum of 17–18°C, according to figures cited in the report.

In Rajasthan, light rainfall is forecast for Jodhpur, Kota, Bikaner, Ajmer, Udaipur, Bhilwara, Alwar, Bharatpur and Sikar. Wind speeds could reach 50 kmph in affected areas. Jaipur's temperature is expected to remain around 28–31°C during the day, with nighttime temperatures near 19–20°C.

Jharkhand and West Bengal Brace for Rainfall
Several districts of Jharkhand, including Khunti, Simdega, Gumla, Lohardaga, Bokaro, Seraikela-Kharsawan and East and West Singhbhum, have been named in the heavy-rain warning. Temperatures could fall by three to four degrees Celsius, while strong winds may affect some areas. Ranchi's forecast maximum temperature is around 22–23°C, with a minimum near 20–21°C.

In West Bengal, the regional meteorological centre in Kolkata has warned of heavy rainfall in several coastal and other districts. These include South 24 Parganas, East and West Medinipur, North 24 Parganas, Howrah, Hooghly, Jhargram, Darjeeling, Kalimpong, Alipurduar and Jalpaiguri. Thunderstorms, showers and winds reaching approximately 50 kmph are possible. Kolkata is expected to record a maximum temperature of around 29°C and a minimum of 24°C.

Uttar Pradesh and Bihar May Face Intense Weather
In Uttar Pradesh, moderate to heavy rainfall has been forecast for areas including Bulandshahr, Ghaziabad, Meerut, Agra, Mathura, Kanpur, Prayagraj, Jhansi and Aligarh. Winds could reach 75 kmph in some locations. Lucknow's temperature is expected to be around 29°C during the day and 22°C at night.

Parts of Bihar, including Darbhanga, Madhubani, Supaul, Aurangabad, Gaya, Begusarai, Samastipur and Kaimur, may experience heavy rain accompanied by strong winds. The report indicates that wind speeds could reach 95 kmph in affected areas. Patna's forecast maximum temperature is approximately 26°C, with a minimum of 22°C.

Safety Advisory for Residents
People in areas facing severe weather should monitor official IMD updates, avoid unnecessary travel during thunderstorms and stay away from trees, electric poles and flooded roads. Fishermen should follow maritime advisories, while residents in hilly areas should remain alert to landslide warnings. The latest district-level forecasts should be checked before making travel or outdoor plans.