Id be going with 1, a xwind from the right. On the east coast, the sea breeze effect is a North East if there is no other prevailing wind (Coriolis affect on the easterly breeze caused by the temperature differential between ocean and land). When there is a prevailing north on a warm day, the sea breeze is usually quite strong, so a day like that you would expect a strong north east breeze in the afternoon.
But like others have said, be checking the windsock first.