Temperatures plunged below freezing just before sunrise on Friday and fell below 20 F by sundown. Gale warnings were in effect for the harbor as the NOAA weather station at Robbins Reef lighthouse in the Upper Bay clocked gusts above 50 knots. With Upper Bay anchorages unappealing, a crowd of tanker barges took up residence on the North River. By Friday morning there were 4 Reinauer ATBs south of the Bridge. Timothy Reinauer left after sundown and headed for the Caddell dock on the Kill van Kull but was replaced by Kristy Ann who dropped anchor after sundown on her way back from Albany. Centerline’s Adeline Marie spent Thursday evening in the Upper Bay but by Friday afternoon headed for calmer waters, briefly stopping at 72nd Street and then joining Choptank north of the Bridge, with the latter having been there since Thursday with a loaded looking barge.