
The cause of the power outage at BWI Marshall Airport is not clear from the provided information. The airport experienced a loss of power, which affected the terminal and control towers, resulting in grounded flights and delays. The power was eventually restored, but the reason for the outage remains unspecified.

The power outage at BWI lasted for approximately two hours on Saturday evening.

Yes, the power outage at BWI Marshall Airport affected all areas, including the terminal, control towers, and air-conditioning system. Passengers were stranded on grounded airplanes and in the terminal, with many flights delayed or grounded. The cause of the outage remains unclear.