Forecast discussion: High pressure now centered off the coast of North Carolina helped give Providence another dry day of weather on Monday. However, by the early afternoon, high and mid-level clouds began to take over the skies. The cloud cover is due to a low pressure system coming out of the Great Lakes. This low will be bringing rain to the Northeast U.S. for the next several days.
As we head into this evening, the low will scoot through the Mid-Atlantic area, before getting caught up in an upper level low. The low will become stationary and over the Delmarva Peninsula on Tuesday. The surface low will remain caught up with the upper level low, and remain to the south of Southern New England over the next few days. So, we will receive constant rainfall and possible thunderstorms for Tuesday and part of Wednesday. The risk of a thunderstorm will slowly decline as we head into Wednesday night, as the low begins to move slowly to the north and east. This will taper the precipitation on Thursday and part of Friday, as the surface low will finally move off into the Gulf of Maine.
So, when is the next time we will see any sunshine? Well, if the computer models are correct, we will begin to see some clearing Friday afternoon. However, it will only be peeks of sunshine through high low level cloud cover. It will still take Friday night to get rid of all the moisture in the upper levels of the atmosphere. A strong high pressure system will bring mostly sunny skies for the weekend, and we will continue to get sunshine as we start the new workweek. Temperatures after Tuesday will remain uniform, with highs in the upper 50’s, and lows in the lower 50’s. We may reach the lower 60’s by Saturday.
Finally, the Atlantic has been quite active for the final month of the hurricane season. The National Hurricane Center is now watching another area for possible development. Over the southwestern side of the Bay of Campeche is a low pressure system. Computer models indicate there is a 50% chance of this low becoming a tropical cyclone in the next 48 hours. However, the models have the low just missing Florida, and getting caught in the cold front from this stationary low we are expecting by early next week. The low will then harmlessly move out to sea.
72 hour forecast:
Tonight: Cloudy with isolated to scattered showers by 3 a.m. We will see a low of 47.
Tuesday: Showers intensify to rain and possible thunderstorms by the afternoon. We will see a high of 63. Winds will come from the southeast at 6-9 mph.
Tuesday night: Moderate rain with patchy fog after 11 p.m. We will see a low of 51 with shifting winds to the north at 7-10 mph.
Wednesday: Rain with a high of 59.
Wednesday night: Rain with a low of 51.
Thursday: Rain tapers to showers by the mid-afternoon. We will see a high of 60.
Thursday night: Showers with a low of 51.
Friday: Scattered showers through the day, ending by 3 p.m. Highs 57-60, lows 46-49.
Saturday: Mostly sunny. Highs 61-64, lows 46-49.
Sunday: Mostly sunny. Highs 59-62, lows 43-46.
Monday: Mostly sunny. Highs 58-61, lows 42-45.