La Niña is a powerful climate phenomenon that begins in the Pacific Ocean when sea surface temperatures cool, disrupting global weather systems. Its effects can be felt worldwide as it shifts wind patterns, alters rainfall, and weakens the polar vortex, sending icy Arctic air further south. For South Asia, including Pakistan, meteorologists are forecasting a harsher winter in 2025–26, with intense cold waves, stronger snowfall across Gilgit-Baltistan, Khyber Pakhtunkhwa, and northern Punjab, and