Dennis Mersereau

Joined: Dec 7, 2015

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A hiker crosses a ravine on a log through Olympic National Park’s rainforest.

A massive thunderstorm turns the sky dark over a field in Sweden.

Tropical Storm Debby came with a storm surge warning in Florida's Big Bend region in 2024.

The busy 2010 Atlantic hurricane season shows Hurricane Karl west of the Yucatan Peninsula, Hurricane Igor east of Puerto Rico, and Hurricane Julia in mid-Atlantic.

The hurricane season officially runs from June 1 through November 30 each year. Here’s what you need to know about these destructive storms.

A major thunderstorm is about to blow over this vineyard.

Meteorologists convey the chance of cloud cover or rain in percentages, but what those numbers mean in the real world isn’t always clear—so you’ll often hear terms like ‘scattered’ and ‘isolated’ to describe thunderstorms.

Atmospheric rivers slammed Southern California in February 2024 and caused widespread floods and mudslides.

Explore the role of these weather systems in transporting moisture from the tropics and spreading it worldwide.

A strong El Niño in 2016 appears like a red tongue in the equatorial Pacific Ocean.

How can warm water in the Pacific Ocean affect the weather thousands of miles away? Everything is connected.

Knowing the difference between these common terms can bolster your safety in severe weather.

Few volcanoes had had such a dramatic and devastating impact on the world as Indonesia's Mount Tambora.

A hot and humid day can have a dramatic effect on both your comfort and your health. As millions of people around the world can attest to right now.

When a winter storm is coming, you have to be prepared (best case scenario: snow day!). Here are the facts about freezing rain, sleet, and snow you need to know.