Precipitation Intensity

Apollo Weather calculates precipitation intensity for hourly forecasts as follows.

Rain Precipitation

Light Rain

0.098 inches (2.49 mm) or less per hour.

Moderate Rain

More than 0.098 inches (2.5 mm) and less than 0.3 inches (7.62 mm) per hour.

Heavy Rain

More than 0.3 inches (7.62 mm) per hour.

Snow Precipitation

Light Snow

Over 5/8 mile (1.0 km) visibility and snow falling at less than 0.04 inches (1.0 mm) per hour.

Moderate Snow

1/2 mile (0.8 km) to 1/4 mile (0.4 km) visibility and snow falling between 0.04 inches (1.0 mm) and 0.098 inches (2.5 mm) per hour.

Heavy Snow

1/4 mile (0.4 km) or less of visibility and snow falling at more than 0.04 inches (1.0 mm) per hour.