BOSTON (CBS) – The east coast is currently in an atmospheric “squeeze play”. A large high pressure area is anchored off the coast south of Nova Scotia and acts as a roadblock to weather trying to migrate west to east.
The main front line that we have observed (and serviced) has been moving at a snail’s pace for the past few days, taking literally days to move through the upper Midwest and now the central Atlantic. When we see a cold front in these areas, it usually takes hours to hit us in New England. Now as we look to our weekend, the front is finally approaching our territory and unfortunately it looks like it could slow to a standstill when it hits the New England coast on Saturday.
In parts of western Massachusetts, flash flood clocks are posted on Friday morning in anticipation of up to 1 to 3 inches of rain from the slow-moving downpours.
According to the current schedule, the rain will come Friday morning in Worcester County and early afternoon in East Mass. Areas in the central and eastern mass. are currently not subject to flood controls or warnings, mainly because the front is likely to lose some of its power when it flows into the dry air associated with the high pressure in our east.
However, we will see isolated showers in our area on Friday afternoons and evenings, and maybe even a single thunderstorm. While the risk of severe weather is relatively low here on Friday, given the amount of “spin” in the atmosphere, we need to closely monitor radar trends to ensure that no storm is forming and rotating, again a fairly low risk, but not zero .
I wish I could say the front would just keep moving east on Friday night predicting a bright and sunny Saturday, but of course it’s not that simple. It appears that the frontal limit is either just above the eastern mass. or comes to a standstill just offshore, creating clouds and the risk of showers near the coast and over southeastern dimensions. and the cape persist.
The further west you live or travel on Saturday, the greater the chance of sunshine and drier (more comfortable) air. While areas along the coast are likely to get stuck in the clouds and still feel the moisture, just 10-20 miles inland, perhaps as close as Route 495, will bask in sunshine and low dew points.
It seems things started moving again on Saturday night and early Sunday. While we can’t rule out one last wave of rain along the front (affecting East Fair) early on Sunday, we should get plenty of sunshine for all of southern New England for most of the day.
The forecast for Gillette Stadium Sunday afternoon – mostly sunny, low 70s, comfortable, and a big W!
As always, we urge you to keep WBZ-TV, CBSBoston.com and CBSN Boston posted for updates!