Heavy snowfall from Baiser to Babusar Top in Naran Valley has covered the surrounding mountains with a white blanket of snow and blocked the road, affecting traffic movement in the upper Kaghan Valley. The meteorological department has forecast the first snowfall of the winter season in the country's northern mountains this week, with rain and thunderstorms expected in several regions, including the federal capital, as a new weather system moves across the country. The forecast covers November 10-14, with snowfall expected over higher elevations in upper K-P, G-B and Kashmir.