The ‘Beauty and the Beast’ of Freezing Rain

A festive World of Water exploration into how freezing rain reveals both the brilliant artistry and icy peril of Earth’s most changeable element.

Many of us have watched snowflakes fall or had sleet sting our cheeks, but what about freezing rain?  It’s not often that it’s forecast to fall here in Wales but it might do at the end of the year. We’ll be ready with our cameras!

So what’s it all about? Freezing rain begins its journey as regular rain. First it falls through a layer of warm air, then it passes through a shallow band of cold air near the ground. And by the time these droplets land, they are supercooled. They’re just warm enough to stay liquid in the air but they are cold enough to freeze instantly on contact with anything like trees, roads and cars – things that are all at sub-zero temperatures.

So when freezing rain lands, it creates ‘glaze ice’ transforming the world into a glistening glass-like kingdom. Every branch sparkles, every road shines, and even the dullest streetlight seems to glow brighter. However, beneath this beauty lies serious danger. The same ice that creates those breathtaking scenes also makes walking treacherous and driving nearly impossible. Because this glaze ice can build up to be several centimeters thick so it can snap power lines and tree limbs, turning a beautiful moment into a an emergency.

The Science Behind Freezing Rain

Freezing rain is a reminder of how delicate the balance of water in our atmosphere can be. Those few degrees of temperature difference can turn gentle rain into landscapes of glittering silence and stop cities and especially airports in their tracks.

From a World of Water and more meteorological perspective:

Freezing rain forms in a ‘temperature inversion‘ – an unusual condition where a warm layer of air sits above subfreezing ground-level air. Precipitation begins as snow in upper, colder layers, melts into rain within the warm zone, and then becomes supercooled in the shallow freezing layer near the surface. These droplets remain liquid until they strike objects below 0∘C0∘C, where rapid latent heat release causes immediate freezing.

The process differs from sleet, which refreezes into ice pellets before reaching the ground.

Understanding the vertical temperature profile through radiosonde data and atmospheric soundings helps scientists predict when and where freezing rain events will occur — vital knowledge when beauty and danger blend in the world of water.

And to thaw out all Jack Frost morning starts, check out ‘Santa’s Elf‘ – one of our enchanting WOW titles for all budding pre-school readers: