storm drain

:  a disturbance of the atmosphere marked by wind and usually by rain, snow, hail, sleet, or thunder and lightning

:  a heavy fall of rain, snow, or hail

:  wind having a speed of 64 to 72 miles (103 to 117 kilometers) per hour

:  to blow with violence

:  to rain, hail, snow, or sleet vigorously

:  to attack by storm

:  filter

:  to draw off (liquid) gradually or completely

:  to cause the gradual disappearance of

:  a means (such as a pipe) by which usually liquid matter is drained

:  the act of draining

:  a gradual outflow or withdrawal :  depletion