Eversource is sending out low-flying helicopters this week to survey damage to power lines following last week’s snowstorm. One helicopter will be checking high-voltage lines and another will check for tree limbs or branches that may have broken in the high winds and be in a position to damage a line and cause a power outage.

The helicopters will be doing their surveying work from Tuesday, Jan. 9, through Friday, Jan. 12, from 8 to 4, weather permitting.

One helicopter is blue and gray with the number N1431W on its tail. The other is blue and white with the tail number N411DD.