* WHAT...Pockets of shallow flooding less than one foot deep. * WHERE...Eastern Massachusetts coast, mainly from Gloucester to Boston and the bay side of Cape Cod. * WHEN...Around the midnight high tide tonight. * IMPACTS...Shallow pockets of flooding less than one foot deep affects the most vulnerable coastal roads and lowest lying areas along the coast, such as Morrissey Boulevard in Boston. Roads remain passable. * ADDITIONAL DETAILS...High astronomical tides may lead to rounds of very shallow flooding during some high tide cycles through Wednesday.