Learn how conditions in the Pacific Ocean result in El Niño, how El Niño changes weather patterns, and why it's difficult to predict what effect El Niño will have in any given year. Welcome to Chaos Theory.

What makes severe weather so severe? Very different from regular weather, severe weather is more dangerous and "puts people at risk." This is the focus of a video that explains how severe weather interacts with the biosphere and geosphere.

What is weather? How is weather different from climate? Factors such as temperature, thunderstorms, precipitation, and wind speed refer to weather. Climate consists of the overall patterns of weather in a particular region of the...

Raising the global temperature by two degrees may not seem like much, but the impact this would have on the planet is amazing. Follow along with this short video as it examines how even a small change to a system can turn its...

Take your students on a storm chasing adventure from the safety of the classroom with this short video on tornadoes. From powerful thunderstorms to swirling twisters, this resource explains the necessary conditions and process...

This kid knows his stuff. A middle schooler explains the five-step process that occurs as a tsunami forms. He relates his tsunami research to the events that occurred in Japan in 2011. The question he poses can be discussed by you class....

Meet hurricane hunters and learn about where hurricanes form and how they occur. Great images, full explanations, and clear narration make this a great clip for learners in grades 3-6. Play this clip prior to or after a lesson on extreme...

Due to the tsunami in Aceh, 25,000 children were left as orphans. A native Aceh woman returned to her hometown to open an orphanage to help homeless children. She founded the Give Light Foundation, which is hoping to open a second...

The largest recorded earthquake in Japan in the last 140 years triggered a tsunami in 2011. Live footage of the event was captured and is shown in this clip. The extensive damage is evident as water floods cities. In a social studies or...

In this Dinosaur Train episode, the Pteranodon family and friends take shelter in a cave while a hurricane rages around them. [12:46]

Learn about in-cloud lightening and its implications for severe weather with this video. [2:51]

This video by NOVA extensively covers Hurricane Katrina's effect on New Orleans in August of 2005. [53:28]

The Jason-2 satellite sees something brewing in the Pacific. Researchers say it could be a significant El Nino with implications for global weather and climate. (May 19, 2014) [3:48]

An interview with scientists meeting to discuss the connection between climate change and hurricanes such as Hurricane Katrina. Aired Jan. 25, 2008 [9:55]

A hurricane forecaster explains factors that indicate a hurricane could form, and precautions to take before and during a hurricane. Aired Aug. 21, 2009 [11:51]

It is reported that the U.S. experiences three quarters of the worlds tornados. Learn what conditions make the great place a breeding ground for these disasters. Interviews with experts and interactive features can be found in this...

We might prefer beautiful weather reports, but we really pay attention when severe storms are predicted. So how do Earth's most powerful storms develop, and how is this related to cloud formation? [3:37]

Flash floods can happen anywhere, but factors such as heavy precipitation, geography and soil conditions can put some areas at greater risk. Russ Schumacher at Colorado State University is studying these factors to make more accurate...

Tornadoes can form in minutes, making early and accurate warnings crucial to saving lives. Howard Bluestein at the University of Oklahoma and Adam Houston at the University of Nebraska are trying to understand why some storms produce...

This video provides a brief explanation of the recent changes in weather forecasting. [2.26]

A teacher-created video that reviews natural hazards, and how they occur, for a secondary school science course. Includes lots of fascinating details. [11:13]

Find out about what makes severe weather, and how it interacts with the geosphere and biosphere. [4:25]

Video illustrates and explains a Nor'easter while exploring the conditions that create these powerful storms. [1:39]

Go behind the scenes of the NOAA Weather Radio system. Learn how the system goes about issuing storm watches and warnings to the community when severe weather approaches. [3:53]