TropicalInfo EN ES Sign Up Free

How Storms Work

The science: formation, wind shear, rapid intensification.

What is Wind Shear? 🔒

Wind shear — a change in wind speed or direction with height — is one of the biggest forces deciding whether a storm strengthens or falls apart. Here's what it is, why hurricanes need low shear to grow, and how forecasters use it.

intermediate

Understanding Rapid Intensification 🔒

Rapid intensification is when a storm's winds spike at least 35 mph in 24 hours, turning a modest system dangerous with little warning. Here's why it happens, why it's so hard to forecast, and what it means for your preparations.

advanced

Understanding Tropical Cyclone Forecasting 🔒

How do forecasters predict where a hurricane will go and how strong it will get? Here's a plain-language look at how tropical-cyclone forecasting works — the models, the data, the cone — and why track forecasts have improved far more than intensity ones.

intermediate

Get alerts in plain language

Create an account