It doesn’t look good tonight - 30 min forecast is negative, and then cloud cover is forecasted around 1 am.

Ah ya, I've been refreshing the 30 minute forecast and playing back the last few hours. It doesn't seem to be progressing south towards Seattle at all unfortunately.

And I hadn't even thought about cloud coverage (ty!). Agree tonight's probably not the night.

Note that according to other comments here, that page shows a playback of the Past 24 hours and a single 30 prediction into the future.

From forecasts on that page and other forecasts, it won't go far enough south to be visible.