Calvin continues to weaken but should still be a tropical storm as it passes near or over the big island of Hawaii Tuesday evening Hawaiian time. Here is the projected damage swath, using my TAOS/TC model to run the CPHC forecast:
Impacts look to be light, gusty winds, heavy rain and surf. However, flash flooding is possible, so if in a vulnerable area take appropriate precautions. Here is a link to the official Key Messages regarding Tropical Storm Calvin.