Major winter storms continue to hit parts of the U.S. — upending travel, closing roads, and leaving thousands of households in the dark.

Over 260,000 customers in the state were without power on Thursday evening. And one major utility service in the state said it did not know when it would be able to restore power.

The early season arrival of a mix of rain, snow, sleet, freezing rain and gusty winds, which first struck on Monday night, caught public utility companies unprepared for the massive power losses.