HUDSON COUNTY — Last weekend, Twitter was filled with photos of a double rainbow in the Hudson County/New York City area. Well, Saturday morning, as gentle showers fell and the sun peeked out, another rainbow was spotted — this time to the northwest. After 10 a.m., it appeared faintly. Here is one photo taken from the Malibu Diner in Hoboken, facing Union City and Weehawken.