THIS, MY FRIENDS, is an unretouched, un-Photoshopped snapshot of the south entrance to Northgate from behind a car windshield during today’s torrential downpour, which helped cause a half-dozen or more crashes along an I-5 that got backed up for about seven miles. But unlike most of our rainstorms, this one did its thang then went away, leaving sunny skies and 54-degree temps (warm enough to melt snow in the mountains, leading to big flood potentialities in the lowlands.)