⚠ TRAINING SIMULATOR — This builds a fictional scenario from numbers you choose. It is not live weather data and not a real forecast. For real conditions, check weather.gov or spc.noaa.gov.
Educational Training Tool

Storm Ingredients Simulator

Drag the sliders to build a completely fictional atmosphere, then see how meteorologists weigh ingredients like instability, wind shear, and moisture to think about severe weather risk. This is a teaching sandbox for weather enthusiasts — the numbers are made up by you, not real current conditions, and the results are not a forecast.

Build A Hypothetical Scenario

Choose Your Fictional Ingredients

Nothing here is live data — you're inventing a hypothetical atmosphere to explore.
82
72
2500
1800
50
800
3.0
7.5
180
180°@15 kt → 240°@55 kt
This sandbox uses simplified, made-up formulas for teaching purposes only — not the real, precise calculations meteorologists use, and not connected to any live weather data. Never use this for real safety decisions.

Fictional Diagnostics

Everything below is generated from the pretend values on the left.
Thermodynamics
— ft LCL
Approx. cloud base height from temp/dewpoint spread.
Kinematics
— kt Shear (0–6 km)
From your fictional surface & 500 mb winds.
Supercell Signal
0.0
Fictional supercell-favorability score (0–3+)
Tornado Signal
0.0
Fictional tornado-favorability score (0–5)
Hail Signal
0.0
Hail: —
Tornado
0%
Hail
0%
Wind
0%
Fictional Result — Not A Real Forecast
QUIET
SKIES
STIRRING
BUILDING
ACTIVE
CHAOS
VOLATILE
PEAK
CHAOS
Why did I get these results?
Adjust the sliders, then click "Explain These Results."
Mini Hodograph
Fictional surface & 500 mb wind vectors, scaled.
Scenario Notes

Remember: this tool is for learning the concepts only. For real, up-to-date severe weather information, always go straight to the source.

weather.gov → spc.noaa.gov → 605 Chaser 7-Day Forecast →