Forecast discussion: After several days of destructive weather across the Central and Southeast U.S., a low pressure system over the Great Lakes will bring heavy rain into the city of Boston over the next 18 hours. Due to the concern for heavy rain, a Flood Watch is in effect from 6 p.m. tonight until 6 p.m. Thursday for Plymouth and Bristol Counties.
This low has brought tornadoes throughout the last few days, and we can now add substantial rainfall to the last. In Pensacola, FL the area received almost 22 inches of rain in a 24 hour period. This is the equivalent of four months of rainfall for the area. Now, we will not see that much rain, but there is the chance of seeing isolated amounts between two to three inches. The greatest chance of reaching these totals is if there are passing thunderstorms. So, please take precaution if you have to be out during the overnight. There is a decent chance for some street and urban flooding.
As we move into Thursday, the heavier rainfall in the morning will taper off to showers, before the precipitation completely ends by early Thursday evening. High pressure now over the Northwest U.S. will bring drier air for Thursday night and Friday. Also, you will notice temperatures will be increasing into the upper 60’s tomorrow. This is due to a warm front pushing over the region. Temperatures will be slowly decreasing, as some colder air from Canada drifts down into Southern New England.
As we head into the weekend, the low pressure center that created the severe weather this week will finally move out of the Great Lakes and into the U.S.-Canadian border near Vermont by Sunday. The low may help generate a few isolated showers early Sunday morning, with scattered showers arriving by Sunday afternoon. The precipitation will end by early Monday morning.
As we head into early next week, a strong high pressure system will remain over the Northeast U.S. We will see dry weather right into the middle of next week, with temperatures slightly below normal.
72 hour forecast:
Tonight: Heavy rain with possible isolated thunderstorms and patchy fog with a low of 48.
Thursday: Heavy rainfall and patchy fog with a possible thunderstorm tapers off to showers by mid-morning before all rainfall ends by 6 p.m. It will be warmer with a high near 66. Winds will come from the south-southwest at 11-14 mph.
Fenway Park Forecast (1:05 p.m. vs. Tampa Bay): Showers, 61.
Fenway Park Forecast (7:10 p.m. vs. Tampa Bay): Cloudy, 60.
Thursday night: Becoming partly cloudy with patchy fog and a low of 52. Winds will turn to the west-northwest at 8-11 mph.
Friday: Partly to mostly sunny skies with a high of 65.
Friday night: Mostly cloudy with a low of 48.
Saturday: Partly to mostly sunny. We will see a high of 65.
Saturday night: Cloudy with isolated showers with a low of 48.
Sunday: Mostly cloudy with scattered showers by 4 p.m. Highs 59-62, lows 43-46.
Monday: Isolated showers end by 2 a.m. Mostly sunny skies during the day. Highs 57-60, lows 42-45.
Tuesday: Mostly sunny. Highs 59-62, lows 42-45.
Wednesday: Mostly sunny. Highs 59-62, lows 42-45.