The India Meteorological Department has issued a 'yellow' alert for heavy rains in Himachal Pradesh's Hamirpur, Chamba, Kangra, and Mandi districts. Thunderstorms and lightning are predicted at isolated places from Monday to Friday. Snowfall is expected in the higher regions, including Lahaul-Spiti and Kinnaur districts, while police have advised caution near Rohtang due to snowfall near the Atal Tunnel.