Charging Light On - Alternator putting out 14.1V

[jnclem]

OK brain-trust. What's up with this. My charge light came on the other day. I took the car home, and since is was snowing, didn't do any diagnostics, just put a charger on to top up the battery.

Went out the next morning and started the car. No charge light (went out immediately and stayed out) and alternator putting out 14.1V at the charging port under the hood.

Today, got about 4 miles from the house and the light blinks a few times, then stays on. When I got back home, the light is on, but again, 14.1V at the charging port.

Battery is only a couple of months old, replaced a 6 year old battery that started to fail in cold weather.

Alternator is 3 years old, Bosch, about 40K miles on it.

The only thing I still will be interested to see, is whether after the car cools off completely, the charge light goes out again, then comes on as the car warms up. To me that would indicate a diode board or some such, but I don't really know much beyond what I'm telling you.Right now it is putting out 14.1 at idle.

Thoughts?