Tornadic Environment Favorability Calculator
Multi-parameter assessment of atmospheric ingredients supportive
of tornado-producing thunderstorms.
Instability
Surface-Based CAPE
J/kg
Mixed-Layer CAPE
J/kg
0–3 km CAPE
J/kg
Convective Inhibition
J/kg
Wind & Rotation
0–1 km SRH
m²/s²
0–3 km SRH
m²/s²
0–6 km Bulk Shear
kt
0–1 km Bulk Shear
kt
Low-Level Environment
LCL Height
meters AGL
Surface Dew Point
°F
0–1 km Lapse Rate
°C/km
Storm Mode
Tornadic Environment Favorability
0
/100
LOW
Fixed-Layer STP
0.0
Low-Level Rotation
--
Supercell Support
--
Low-Level Buoyancy
--
Ingredient Breakdown
Instability
0%
Low-Level Rotation
0%
Deep-Layer Shear
0%
Low-Level Thermodynamics
0%
Storm Mode
0%
This calculator evaluates environmental ingredient overlap only.
It does not predict tornado occurrence, timing, location, or
intensity. Storm-scale processes, boundaries, storm interactions,
convective mode, and real-time observations can substantially
change tornado potential.