**Low pressure to bring some welcomed rain to the Mid-Atlantic region from later tomorrow to late tomorrow night...and some may see snowflakes mixed in at times**
Paul Dorian
Low pressure will move eastward on Tuesday from the Midwest to the Mid-Atlantic region bringing with it some much needed rainfall and, in some areas, snowflakes can mix in at times. Maps courtesy NOAA (12Z HRRR)
Overview
It has been quite dry in the Mid-Atlantic region during the past several weeks with below-normal rainfall so far in the month of November and this followed drier-than-normal months of September and October. While not expecting a heavy rain event, low pressure will bring some welcomed rainfall to portions of the Mid-Atlantic region from later tomorrow into tomorrow night with the highest totals likely along and south of the PA/MD border. The air mass in place, as the precipitation arrives later tomorrow will be quite chilly and there can be some snowflakes mixed in at times; primarily, in those areas north of the PA/MD border.
While not a heavy rain event, some welcomed rain is coming to the Mid-Atlantic region with highest amounts likely along and near the PA/MD border. Map courtesy NOAA, tropicaltidbits.com
Details
Colder-than-normal air pushed into the Mid-Atlantic region on Sunday following the passage of a strong cold front and it was ushered in on strong northwesterly winds that gusted to 50 mph or so. These same northwest winds will be a noticeable factor throughout the rest of today, and then they’ll die down later tonight with high pressure building into the area. On Tuesday, temperatures will remain below normal for this time of year and - just as important in terms of prospects for any frozen precipitation - dew points will be quite low as well, indicative of a very dry air mass. Clouds will thicken during the morning hours as low pressure starts to head in this direction from the Midwest.
With a cold, dry air mass in place, some of the rain that heads into the Mid-Atlantic later tomorrow and tomorrow night could be mixed with snow at times; primarily, in those areas north of the PA/MD border. Map courtesy NOAA, tropicaltidbits.com
On Tuesday afternoon, the leading edge of the precipitation shield will make inroads into the Mid-Atlantic region with rain possible from central PA to north-central MD. This rain shield will tend to be confined to near the PA/MD border for a few hours and then will likely expand noticeably in coverage by the late evening hours encompassing much of the Mid-Atlantic region and it could last all the way to the hours just before daybreak on Wednesday.
In terms of precipitation type, while certainly not a significant snow event, there can be some snowflakes mixing in at times from late tomorrow into the overnight hours; primarily, in areas to the north of the PA/MD border. In many cases, this would be the first taste of snow so far this season.
Meteorologist Paul Dorian
Arcfield
arcfieldweather.com
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