For Big Sur, it will arrive after 11 pm per NOAA.
A secondary stronger boundary develops tonight into tomorrow morning and will bring more widespread coverage and higher rain rate intensity from the Golden Gate southward. An unstable post frontal environment given afternoon heating and atypical cold spring temperatures aloft will encourage convective development Thursday afternoon into night. This will spawn showers and isolated thunderstorms and bring an additional round of hit or miss precipitation after the primary stratiform rain band goes through late Wednesday to midday Thursday. Storm total rain falls will vary on the output of the convective showers at the tail of the event, however, generally looking to expect 1-2" in the higher terrain (highest spots 2"+), 0.50 - 1.00" for most urban valley locations, and 0.25 - 0.50" for rain shadowed areas such as the South Bay and Salinas Valley. This storm is strong by late April standards but more "run of the mill" for mid-winter standards. The one key difference versus mid winter systems will be greater differential heating tomorrow that will lead to more widespread showers and potentially thunderstorms.
