Ceiling estimate
Cloud Base Estimator
Use the surface temperature and dew point spread to estimate the height of a convective cloud base.
Approximate result
≈ 4,100 ft AGLEstimated convective cloud base
Temperature spread10.0°C18.0°F
Estimated base MSL—Add surface elevation above
FormulaΔT × 1.8 ÷ 4.4Result × 1,000 ft