Icicles dangling from the eaves of your home might look picturesque, but they’re often a warning sign of underlying issues. Icicle formation usually occurs when warm air escapes your house, causing ...

Icicles forming on gutters can be a sign of ice dams, a buildup of ice that can cause damage to roofs and gutters. Ice dams form when snow melts on a roof and refreezes at the edge, preventing water ...

This photo, taken on Jan. 2, 2026, shows icicles having formed on the ground at a closed railway tunnel in Yeoncheon, north ...

A: Icicles typically form on days when the outdoor air temperature is below freezing but sunshine warms and melts snow or ice. Thus, you may notice that more icicles form on the sunny south-facing ...

FARGO — You may have noticed that icicles sometimes form with a very smooth edge and sometimes with ribbed sides. Physicists at the University of Toronto have determined that the difference is due to ...