For First Responders · Atmospheric Stability
Atmospheric Stability for a jet stream
Built for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field. Simulate a jet stream live below — adjust the inputs and watch it respond, right in your browser.
Atmospheric Stability (CAPE)Live
will storms fire?
Controls
Presets
When a rising air parcel stays warmer than its surroundings, it keeps accelerating upward — the fuel for thunderstorms. The pink area between the parcel and environment curves is CAPE, the convective available potential energy. Large CAPE means tall, violent storms; a stable profile suppresses them. This is the core of severe-weather forecasting.
Data Inspector
CAPE (approx)18150 J/kg
Forecastsevere storms
Lapse rate7.5 °C/km
Governing equation
Reading this result: Steep environmental lapse (7.5 °C/km) keeps the parcel far warmer than its surroundings all the way up — huge CAPE fuels tall, violent updrafts.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
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Frequently asked questions
- Is this good for first responders?
- Yes — this version of "Atmospheric Stability for a jet stream" is framed for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.