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Boston weather: Warmer temperatures, rain expected on Wednesday

The weather map for Southern New England at 1 p.m. EST on February 19, 2014.
The weather map for Southern New England at 1 p.m. EST on February 19, 2014.
www.weather.gov

Forecast discussion: Another day, another snowstorm. The low pressure system that brought more snow to eastern Massachusetts is now moving into the Gulf of Maine. Around the region, the Cape and Islands received a coating to 2 inches. The Boston area received anywhere between 3-6 inches.

High temperature forecast for February 19, 2014
www.weather.gov

Over the next few days, temperatures will be increasing, so we will not be seeing any more snow. However, that does not mean we will not be seeing any more precipitation. The jet stream is allowing for some tropical air to move towards the north. This will allow our high temperatures to go above freezing for the next few days. But, it will not be dry, since we will have a low pressure system moving over the region on Wednesday. This low will bring more precipitation, but not in the form of snow. It may begin as a mix of wet snow and rain, but will eventually turn to all rain by the afternoon. This will make driving a little more hazardous, as the roads will probably have more slush and standing water. Also, any leftover puddles or slush will re-freeze Wednesday night, as temperatures go below freezing.

High pressure will move over the Mid-Atlantic for Thursday, giving us bright sunshine and above normal temperatures. The warm weather will continue into Friday, but a strong low pressure system will bring showers and light to moderate rain for Friday. We will see the strongest melting, as temperatures are forecast to reach 50 degrees. Also, we may see patchy to dense fog on Friday, as warmer air moves over the colder snow pack on the ground. The milder weather will continue into part of Saturday, before Arctic air from Canada once again brings old man winter back to eastern Massachusetts.

We will see high temperatures reach the middle to upper 40’s on Saturday before falling through the daytime. This is due to a strong high pressure system coming out of the eastern Rockies. The high will bring bright sunshine, but it will also bring that Arctic air back into the region. As we look into early next week, the computer models went to develop a low pressure system off the coast of South Carolina, and bring some possible snow showers by next Tuesday evening.

72 hour forecast:

Tonight: Partly to mostly cloudy with a low of 26.
Wednesday: Cloudy with rain/snow showers arriving by noon. Precipitation changes to all rain by 2 p.m. We will see a high of 42 with east-southeast winds of 8-11 mph.
Wednesday night: Rain ends around 10 p.m. We will see a low of 30 with winds shifting to the west-northwest at 13-17 mph.
Thursday: Mostly sunny with a high of 44.
Thursday night: Becoming mostly cloudy with showers and light rain beginning after 1 a.m. with a low of 35.
Friday: Cloudy with showers/rain ending by 9 p.m. We will see a high of 51.
Friday night: Mostly cloudy with a low of 34.

Extended Forecast:
Saturday: Partly to mostly sunny and cooler. Highs 45-48, lows 30-33.
Sunday: Mostly sunny. Highs 39-42, lows 24-27.
Monday: Mostly sunny with possible evening ocean effect snow showers. Highs 32-35, lows 18-21.
Tuesday: Cloudy with possible evening snow showers. Highs 29-32, lows 20-23.