Most of that's actually just fairly flat low cloud near the coast at the moment with some patchy midlevel cloud as well as you can see in the latest post-processed Himawari satellite imagery above (the colour legend is on the bottom).
There's some deeper cloud further inland although it's not producing much at the moment.
Ideally, you actually want less cloud cover at this time of day so the sun can heat the surface a lot more but there may still be some activity this afternoon and night, mainly favouring southern and possibly western parts.