A powerful spring storm threatened to disrupt Monday morning commutes across the northeastern United States with potentially historic snowfall and heavy rains.

The blustery blast follows a mild winter that saw little snow and the warmest March on record.

Snowfall amounts of 6 to 14 inches are forecast for the Allegheny Mountains of western Pennsylvania and near Lake Erie, the National Weather Service said. Snow advisories also are posted for West Virginia, western New York and extreme northeastern Ohio.

Such storms are rare for late April in the region and records are expected to fall.