Forecast for Tuesday: Thunderstorm accompanied by squall would occur at isolated places over Himachal Pradesh, Uttarakhand, Chhattisgarh, Jharkhand, coastal Andhra Pradesh, Telangana and north Tamil Nadu. Dust/thunderstorm accompanied by squall would occur at isolated places over Punjab, Haryana, Chandigarh, Delhi, Uttar Pradesh, Rajasthan and north Madhya Pradesh. Heavy to very heavy rainfall would occur at isolated places over Assam, Meghalaya and heavy rainfall at isolated places would occur at Sub­Himalayan West Bengal, Sikkim and Arunachal Pradesh.