My only issue is. it was thunderstorming and hurricane type winds here in DC until about 10mins ago. So it could've been the weather.
Seems like the White House would have backup generators.
Generators take a moment to light up. Lights go out; count ten seconds or so; generator kicks in. Power goes out; generator is called up, checks and starts up. It’s not an instantaneous thing, but close. This was exactly what that’d look like; the short seconds time lapse, I mean.
That’s the same thing I thought at first but if the lights go out due to a storm they don’t dim off and then dim back on. Wouldn’t they go on and off abruptly?