Virga

Precipitation that falls from a cloud but evaporates before reaching the ground, visible as wispy streaks hanging beneath the cloud base. Virga is a significant wind shear indicator because the evaporating precipitation cools the surrounding air, creating localized downdrafts and unpredictable wind shifts near the surface. Pilots should exercise caution when flying near virga, particularly during approach and departure, as the associated wind shear can cause sudden and dangerous changes in airspeed and flight path.