The wisps of drizzle signal the change in the weather that is coming.
There will be drips and drops around all day ending by 2PM or so.
By 5AM Wednesday morning the rain sweeps in.
It will build all day with the strongest rainfall happening in the afternoon hours. It should clear out by around 8PM.
Total accumulation to 5PM Wednesday: 16mm. Possibly more near the Beauforts.
Thursday is not looking too bad right now.