The San Diego region is being drenched by a rare spring storm system, but all that moisture isn’t adding much to the region’s supply of drinking water.

The snow was falling in the San Diego county mountains on Wednesday, pretty heavily in some places.

That comes courtesy of a slow-moving cold storm system coming into the region from the north.

The region’s National Weather Service office called this prolonged six-week run of rain in March and April, pretty rare for the region.