Web Apps
Free tools that run in your browser. Nothing to install.
Storm Viewer
Replays National Hurricane Center forecasts for select storms, advisory by advisory, next to the paths the storms really took.
How it came to be
As a resident of Florida, I have lived the experience that “waiting for a hurricane is like being stalked by a turtle.” I would grab images of the National Hurricane Center’s famous “probability cone” for (most) storm updates and build animations to watch how they develop. At some point it occurred to me that a bot could do this work. Once I had the animations, I asked it to render the actual track, and I could watch how predictions more or less matched reality. Finally, I added the “wind footprint” to the animations, and I had a “product” I had not seen elsewhere.
I started with storms of interest to me, and add new storms to this animation as time and usage quotas allow. I hope you have fun with this viewer. Feedback, including a storm of particular interest to you, is always appreciated.
All storm data comes from the National Hurricane Center.
How to use it
- Choose a storm from the menu at the top left.
- Press Play (or the Space bar), or drag the timeline, to step through each advisory. The arrow keys move one advisory at a time.
- Add your own places in the right-hand panel, or with + Place on the map. For each one you’ll see the distance from the storm, whether it’s inside the cone and the closest approach. Places are saved only in your browser.
- Under Layers, switch on the full observed track or earlier cones to see how the forecasts compared with what happened. Detailed view adds wind radii and sources.




