.....Or so it appears at the apartment. So far I have only been able to get 2-10% signal on channel 48 here; just barely enough to show on the signal metre. It's been like this since about Saturday morning.

Is it the weather? Too much ice & schnee on the transmitter aerial, maybe?

I am getting a reading of about 50 (normal is mid 90s) but picture is normal. There are several power outages in the west hills, perhaps they are running on a generator?

yes generator.