Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Educators · Hazmat Incident Kit

Hazmat Incident Kit for an El Niño

Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate an El Niño live below — adjust the inputs and watch it respond, right in your browser.

Hazmat Plume

open full solver →

Hazmat Plume DispersionLive

Gaussian plume · protective action

Controls

Presets

Release rate (g/s)

Wind speed (m/s)

Action level (mg/m³)

A Gaussian plume estimates how a gas or vapor release disperses downwind. Stability class (A unstable to F stable) sets how fast the plume spreads. The dashed line is the protective action distance where concentration falls below your action level. Screening estimate only — use ERG and monitors on scene.

▶ Run in Python

Data Inspector

Protective distance>20 km

StabilityD neutral

Wind4 m/s

Governing equation

C (x, y) = \frac{50}{2 π 4 σ _{y} σ _{z}} exp (- \frac{y ^{2}}{2 σ _{y}^{2}})

Reading this result: Concentration falls off as the wind stretches and vertical mixing thins the plume — stronger wind and less stable air pull the protective distance in toward the source.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

↓

Triage

open full solver →

START TriageLive

mass-casualty triage algorithm

Triage category

YELLOW

Delayed

Controls

Can the patient walk?

Is the patient breathing?

Presets

Respirations / min

24 /min

Perfusion (radial pulse / cap refill <2s)

Mental status (obeys commands)

Simple Triage And Rapid Treatment sorts mass-casualty patients in under 60 seconds each using RPM: Respirations, Perfusion, Mental status. Training reference only — follow your agency protocol and medical direction.

▶ Run in Python

Data Inspector

RR trigger>30/min

Perfusioncap refill 2s

StandardSTART adult

Triage criterion

RR = 24 \leq 30 \Rightarrow not RED by RR

Reading this result: RPM checks pass (RR 24/min, perfusion adequate, follows commands), so the patient is DELAYED (YELLOW).

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

Also for:Students Researchers Engineers Hobbyists & Makers K-12 Students First Responders General version →

More with Hazmat Incident Kit

Hazmat Incident Kit for an earthquake Hazmat Incident Kit for a volcano Hazmat Incident Kit for a glacier melt Hazmat Incident Kit for a tsunami Hazmat Incident Kit for a river flood Hazmat Incident Kit for an ocean current Hazmat Incident Kit for a sea-level rise Hazmat Incident Kit for a carbon cycle

Frequently asked questions

Is this good for educators?: Yes — this version of "Hazmat Incident Kit for an El Niño" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.