Thunderstorms across the Garden State Sunday evening have left over 10,000 utility customers without power Sunday evening. The National Weather Service earlier put the entire state under a severe thunderstorm watch until 10 p.m., and some areas have been under thunderstorm and flood warnings at times, with possible gusts up to 70 mph. A flood watch is also in effect for parts of 17 counties until 2 a.m. Monday: Bergen, northwestern Burlington, Camden, Essex, Gloucester, Hudson, Hunterdon, Mercer, Middlesex, western Monmouth, Morris, Passaic, Salem Somerset, Sussex, Union and Warren. NJ.com’s P…