(meteorobs) Question....sky sighting!

[Pamela Keth]

We live in central PA.  Tonight between about 9-10 p.m. we were sitting
around a fire with our kids when we saw a few meteors....so I assume.
Everyone was getting excited about these sightings, when one of the older
kids noticed something in the sky.  It looked like a stream that comes from
a jet during the day, not typically visible in the night sky. The line was
rather thin and to the West of the roof line of the house.  The line moved
in an easterly direction and got thicker as it passed over us. We are not
astronomers and know there is probably a good explanation for what we saw.
It moved rather rapidly stayed the same length, but increased in width.
Can you tell me what this would be?

Thank you
Pam Keth