weather phenomena

Frost gets the credit for ending mosquito season, but shrinking daylight flips the switch weeks earlier, and many mosquitoes simply wait out winter in garages and as eggs.

The three cold-weather alerts measure different risks, their cutoffs change from one forecast office to the next, and all of them disappear once your growing season is over.

The yellow warning that vanishes 20 minutes into your commute is physics, not a glitch, and it is usually telling you the tires were already low.

Day length, the normal trigger for fall color, is the same every year. When a tree turns weeks early, drought or damage is usually doing the work, and 2026 has offered plenty of both.

The same lightning bolt can sound like a gunshot or a drumroll depending on how far away it struck. Here's the physics behind both.

Frost can form on a windshield when the forecast still reads in the upper 30s. The gap comes down to where, and how, temperature is actually measured.

Antarctica's interior cools so much that cold, dense air comes crashing downhill toward the coast. Here's how katabatic winds make it the windiest continent on Earth.

Streaks of rain hang from a cloud, curl, and vanish before reaching the ground. It's a real weather event with a name, and sometimes a dangerous one.