Parts of Maine were experiencing strong thunderstorms Thursday afternoon as a cold front swept across the state, bringing with it the potential for damaging winds, hail and lightning.

A severe thunderstorm watch was issued Thursday morning for Androscoggin, Cumberland, Kennebec, Oxford and York counties. The watch remains in effect until 6 p.m.

While the day started off with sunshine and warm and humid conditions, it helped fuel atmospheric instability ahead of the approaching front. By 3:30 p.m. in Lewiston, the storm had already passed after bringing rain, wind and lightning through the area.

NOAA’s Storm Prediction Center placed much of Maine under a small risk for severe weather, meaning that scattered severe storms were possible. Wind gusts could reach 40-60 mph placing powerlines at risk from downed trees. Hail, torrential downpours and cloud-to-ground lightning are also possible in some areas.

Forecasters are warning that some storms could intensify quickly.

The cold front is expected to move offshore and bring in drier and cooler air July 4 celebrations. Friday’s forecast calls for mostly sunny skies, lower humidity and temperatures in the 70s.