A deadly calm is settling over the Mid-Atlantic.

Roads look wet, but they’re turning into glass.

Power lines hum under the weight of invisible ice.

In Maryland, Virginia, West Virginia, and Pennsylvania, a routine drive, a quick walk, a simple errand could flip into chaos.

Emergency crews are staging.

Across the Mid-Atlantic, officials are racing against time as the freezing rain intensifies, locking communities under a dangerous glaze of ice.

Meteorologists stress that what makes this storm so treacherous is its subtlety:

roads may appear merely damp while hiding a nearly frictionless surface beneath tires and shoes.

In hilly or rural areas, a single misstep or slight steering error could send vehicles and people sliding out of control.

Emergency managers urge residents to stay home, avoid unnecessary travel, and let utility and road crews work without added risk.

Stocked pantries, charged batteries, and checked-on neighbors may prove as important as salt trucks and plows.

As the storm slowly pulls away by late Thursday, the region will be left to untangle downed trees,

repair power lines, and count the costs of a hazard that arrived almost silently, then refused to let go.