BANGOR, Maine — A quick, sometimes heavy snowfall Saturday afternoon hasn’t piled up as much as predicted, but could be a precursor to a storm with the potential to drop a foot to 18 inches of snow on central and eastern parts of the state midweek.

A winter weather advisory will remain in effect until 7 p.m. Saturday for parts of Somerset, Piscataquis and Penobscot counties. The advisory remains in effect until 9 p.m. in parts of Washington and Aroostook counties. Forecasts predicted snow accumulations of 3 to 5 inches — and up to 6 inches in some spots — though towns in the Bangor area were lagging far below those estimates, with little to no accumulation as of late afternoon.

In advance of Saturday’s storm, Bangor announced a downtown parking ban for Saturday night into Sunday morning.

Something much more annoying could be coming, according to the National Weather Service.

A midweek storm could dump more than a foot of springtime snow on parts of the state, mostly on Wednesday. Other forecasts and storm tracks have been calling for smaller accumulation totals between 3 and 8 inches.