IMD bulletin says maximum temperatures are ‘very likely’ to be around 41°C in isolated places in Palakkad; 40°C in Kollam and Thrissur; 38°C in Kottayam, Pathanamthitta, Ernakulam, and Kozhikode districts; 37°C in Alappuzha, Malappuram, Kannur, and Kasaragod; and 36°C in Thiruvananthapuram district till April 24