Thursday should start out dry, but don’t be fooled — rain will arrive sometime after noon and not let up until Friday morning.
The low pressure system set to arrive Thursday is currently marching across the Midwest, bringing potentially bringing severe weather to the Chicago area this afternoon. Once the system pushes to the Atlantic coast, it will swing north, traversing southeast of Nantucket and sending rain bands north and west, said National Weather Service meteorologist Kim Buttrick.
The Boston area is expected to see 1 to 2 inches of rain, while the western part of the state will receive 2 to 4 inches. The weather service has also issued a flood watch for the entire state except Cape Cod and the islands, in effect Thursday into early Saturday warning of flooding rivers and streams. Urban areas could also see localized flooding.
Though the low isn’t expected to pack any sort of severe punch, Buttrick said, it’s expected to cause problems thanks to the already-soaked soil.
To date, Boston Logan International Airport has reported 6.60 inches of rain to date for the month, more than 4 times the normal precipitation of 1.56 inches expected for the period. This increases the chances of trees toppling by losing their grip in soggy soil, Buttrick said, especially along the east-facing coast, thanks to wind gusts expected to reach 40 miles per hour Thursday night.
“This much rain and wind can be problematic for foliage,’’ Buttrick said. “It doesn’t take much to topple things over when the grounds are this soaked.’’
Temperatures aren’t expected to top 70 degrees Thursday. On Friday the high is forecast to be 61 degrees.
Things should begin to rebound Friday afternoon as the system finally starts pulling away from the region. By Saturday, conditions will be sunny and seasonable, with forecast highs approaching 80 degrees.
Though Saturday will be a prime beach day, Buttrick warned of rip currents, which are expected to be strong both Friday and Saturday along the entire east-facing shoreline from Salisbury Beach down to the outer Cape and Nantucket.
On Sunday, temperatures will be in the mid-70s with mostly sunny skies. Not a drop of rain in sight.