Wednesday: The storm will begin to impact Greater Boston on Wednesday. All day winds will steadily increase, especially along the coast. Rain will move in from south to north during the lunchtime and afternoon hours. A few wet flakes will mix in from Boston north and west, but you’ll have to get outside of 495 to see any accumulation.
Wednesday Night: The storm will be strongest Wednesday night. That’s when northeast winds along the coast will be in the 30-40 MPH range. Gusts will reach 40-55 MPH overnight Wednesday into Thursday. Just inland, expect more like 20-30 MPH winds, with gusts up to 40 MPH. This will be enough to down a few limbs, and possibly power lines as well. The good news is that most of the weakest trees and limbs likely came down in Sandy.
The rain will also be heaviest Wednesday night, so this is when the best chance of flooding will occur. Be sure to clear storm drains of any lingering leaves or pine needles.
Thursday: Rain will continue early Thursday morning during the commute, but during the day you’ll notice it become much lighter and more sporadic. Winds will also continue to relax with time.
Rainfall: Final rainfall totals will reach 1-2″ across much of Greater Boston.
Coastal Flooding: Tides are astronomically low late this week, so at this time just some minor splash-over is likely around high tide Wednesday and Thursday. Offshore waves will build to 15-20′.