Safety Tool
Weather Go / No-Go Matrix
Select current site conditions to get an instant GO / CAUTION / NO-GO safety rating based on ANSI Z133 requirements. Always apply professional judgment — this tool does not replace a qualified site assessment.
Wind Speed
Lightning
Precipitation
Temperature
Work Type
GO
Conditions are acceptable. Maintain situational awareness.
Identified Concerns
- No weather hazards detected for the selected conditions.
This tool is for educational reference and ISA exam preparation only. Field conditions vary — always follow your employer's Job Hazard Analysis (JHA) procedures and consult a qualified supervisor before performing tree work in adverse weather.