All About Blizzards

A blizzard isn’t just any old snowstorm. It’s extreme winter weather. Watch and learn what makes these storms special.

Two bottles with different contents to demonstrate storms.
This timelapse video is of a model of a sunny day and a stormy day using clear bottles with different contents. In Lesson 4 of the GLOBE Weather Curriculum, students have the option to create their own models, or they can use this supplemental video.
Boulder, Colorado Flood: How the City's Resilience Strategy Saved It
The 2013 intense week-long rainstorm could have been devistating for Boulder, Colorado, but thanks to city planning and floodplain management, the city fared relatively well.
Dropsonde Animation from NOAA
Short animated video showing instrument packages called dropsondes being released from an airplane.
NASA's Global Hawk Robotic Research Aircraft
Video of NASA's Global Hawk robotic aircraft releasing dropsondes.
Dropsonde video from NSF/NCAR
Video showing dropsondes being released from aircraft and balloons to measure atmospheric properties at various altitudes.
Flash Flood
A 2005 flash flood fills a West Virginia creek in seconds.
From Dog Walking To Weather And Climate
There is much more variation in the path that the dog takes as compared with the man, but they are both headed the same way. Similarly, weather can be highly variable and climate means long term trends.
Hazardous Heat Waves

Heat waves are abnormally hot weather that occurs over a few days to several weeks, and climate change is making them worse. Watch and find out why heat waves are a hazard and what you can do to stay safe when they happen.

How Hail is Made in Storms

How do hailstones form, and why are some much larger than others? Watch to learn how hail can form during a thunderstorm.

Is it Going to Snow?

Why is it so hard to predict when we’ll have a snow day? Find out what factors determine whether precipitation will fall as rain, sleet, or snow!

Making Clouds

Clouds are made of water or ice crystals, but how do they form? Learn more about cloud formation and when it’s likely to happen

Meet a Hurricane

Learn what makes a hurricane a hurricane, as well as how these storms can cause damage from storm surge, heavy rain, and fierce winds.

Meet a Tornado

Learn what makes a tornado a tornado, and how these powerful storms can cause property damage and are a threat to our safety.

No Two Hurricanes Are Alike

Did you know that a strong hurricane isn’t necessarily large in size? Hurricanes are called strong when they have high winds. The Saffir Simpson categories of hurricanes are based only on wind speeds. But there is more to hurricanes than wind speeds. There are other ways to describe hurricanes - for example, by the amount of rain and flooding they cause. When there is a hurricane or tropical storm heading towards the coast, get to know all about it to learn what hazards it could cause.

Satellite Signals from Space: Smart Science for Understanding Weather and Climate
This video explains how COSMIC satellites monitor our atmosphere, collecting data that is used to improve weather forecasts, monitor the upper atmosphere, and understand our climate.
Supplemental Teacher video for GLOBE Weather Lesson 15
This video on the Coriolis effect is a supplemental teacher resource for Lesson 15, Part 2 of the GLOBE Weather Curriculum. In this lesson, students investigate the question “When air and storms move, why do they curve? Using a balloon and a marker, they create a simple model to observe the Coriolis effect.
Supplemental Teacher video for GLOBE Weather Lesson 5
This video on convection is a supplemental teacher resource for Lesson 5 of the GLOBE Weather Curriculum. In this lesson, students watch a demonstration of warming up and cooling down the air inside a Mylar balloon that has been partially deflated. Students discuss what they think happens to cause the balloon to go up or down.
The Shape of Raindrops

Did you know that raindrops are not shaped like teardrops? They actually look like tiny hamburgers falling through the sky. Watch this video to learn why!

Weather balloon launch
In this video from the U.S. National Weather Service, a scientist explains how weather balloons are used to collect data that improves weather predictions.
A sunny day
This video was captured on Eagle Ridge above Lyons, Colorado near the Front Range of the Rockies by David Niels as part of his research for the Colorado Climate Center. This sunny day video was filmed on April 6, 2017.
A cloudy day
This timelapse video was captured July 4, 2017 on Eagle Ridge above Lyons, Colorado near the Front Range of the Rockies by David Niels as part of his research for the Colorado Climate Center.
What Does Storm Surge Look Like?

NCAR researchers visualizing hurricane impacts created this animation to show how quickly nine feet of storm surge can flood a coastal city.

What Makes a Bomb Cyclone

A bomb cyclone can cause severe winter weather. A bomb cyclone is a storm outside the tropics that has very low air pressure at its center. Bomb cyclones typically occur in the winter and can cause cold and stormy winter weather. Bombogenesis is the process of air pressure falling rapidly, which makes a storm into a bomb cyclone.

What Makes Cities So Hot?

A city can be several degrees warmer than the surrounding area. Learn how this phenomenon, called the urban heat island effect, occurs and find out what can be done to keep cities cool.

What Makes Snowflakes Take Shape

Do you know that snowflakes are different shapes? Their shape depends on air temperature and humidity where they form. Find out why some snowflakes have simple shapes and others are more intricate.

matt kelsch
Meteorologist Matt Kelsch clears up what the terms 100-year, 500-year, and 1000-year flood actually mean.
What's the Polar Vortex

Learn all about the polar vortex and how it causes chilly winter weather in the mid-latitudes when the air circulating around the North Pole wobbles to the south.

What's With Weather Fronts?

A weather front can cause clouds and storms with rain or snow. After a front passes, there might be a change in weather such as cooler air or blue skies. Weather fronts are places where different air masses meet. An air mass is a large area of the troposphere where the air has a similar temperature and moisture. There are different types of fronts. Cold fronts occur where a cold air mass pushes into a warm air mass. Warm fronts occur where a warm air mass pushes up and over a cold air mass.

Why the Wind Blows

Learn how air pressure in the atmosphere causes wind as air flows from high pressure to low pressure areas.