The US is shifting to a new set of climate 'normals' – data sets averaged over the past 30 years. But normal is a relative concept in a time of climate change.
While land tornadoes are associated with huge supercell thunderstorms, waterspouts can form during smaller storms or even just showers or the presence of the right kind of clouds.
It has only been in the past century that weather prediction on Earth has advanced enough to work two weeks in advance. Predicting space weather, however, is only reliable an hour in advance.
Internal waves can create pretty cloud shapes in the sky, as well as making life unpleasant for passengers on aeroplanes. And in the oceans they can be a deadly hazard to submarines.
Smart people can have really bad ideas – like selectively breeding human beings to improve the species. Put into practice, Galton's concept proved discriminatory, damaging, even deadly.
Ramping up fossil power sources is no longer a good option in an energy-supply crisis. Bring in the weather forecasters.
Hurricane stalling has become common over the past half-century, and their average forward speed has also slowed.
It's only happened twice since naming started in 1950, and there's an unusual twist to where many of the storms formed this year.
Laura went from a tropical storm to a major hurricane in less than 24 hours, sending coastal residents scrambling to prepare. Hurricanes Harvey and Michael exploded in strength in similar ways.
It's a lot more than you might think.
Hurricane and tornado winds spin in circles, but there's another, equally dangerous storm type where winds barrel straight ahead. They're called derechos, and are most common in summer.
Finding could be useful for attempts to manipulate the weather using technology.
More than one million weather observations were made by aircraft each day in 2019. Since the pandemic started, these have dropped by 90%.
The COVID-19 pandemic hasn't just disrupted our lives. It has also challenged the way we forecast the weather.
In the Southeast US, tornadoes strike at night more often than in other regions. This poses special challenges for getting early warnings to the public.
Earth's biggest rivers are streams of warm water vapor in the atmosphere that can cause huge rain and snowfall over land. Climate change is making them longer, wetter and stronger.
Humans are not very sensitive to changes in air pressure, but they can have a big effect on the weather.
Not so long ago, people had no idea what would happen to them – and what they would see – once they ascended into the clouds.
Large, intense bushfires can pump so much heat into the atmosphere they form their own thunderstorm system. And that can make the weather on the ground even more dangerously unpredictable.
It helps if you imagine the ground here on Earth as a big heater. It keeps us warm, and if you move away from the heater you feel cold.