|Dew Point:||1.4°F (-17.0°C)|
|Sea Level Pressure:||29.06" (983.9 mb)|
Heavy SnowLow: 23
SnowHigh: 31 Low: 31
Chance Light Rain then Partly SunnyHigh: 52 Low: 34
Slight Chance Light RainHigh: 43 Low: 34
Light RainHigh: 42 Low: 39
Snow after 8pm. Cloudy, with a low around 23. Southeast wind around 7 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Snow before 7am, then snow and sleet between 7am and 1pm, then sleet and freezing rain. Cloudy, with a high near 31. Southeast wind around 8 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible. Little or no ice accumulation expected.
Sleet and freezing rain before 10pm, then rain. Cloudy. Low around 31, with temperatures rising to around 42 overnight. Southwest wind 6 to 13 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible. New ice accumulation of less than half an inch possible.
A chance of rain before noon. Partly sunny, with a high near 52. West wind 7 to 12 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain after 7pm. Mostly cloudy, with a low around 34. Northwest wind 5 to 8 mph. Chance of precipitation is 20%.
A slight chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 20%.
Rain likely. Cloudy, with a low around 34. Chance of precipitation is 70%.
Rain. Cloudy, with a high near 42. Chance of precipitation is 90%.
Rain. Cloudy, with a low around 39. Chance of precipitation is 90%.
... High pressure will build over the region through tonight. Low pressure will track from the Mississippi valley into the Great Lakes Wednesday through Wednesday night. Coastal low pressure will develop along the Mid-Atlantic Coast Wednesday night before moving off to our northeast Thursday. High pressure will return Thursday night and Friday before another low pressure impacts the area early next week.
NEAR TERM /THROUGH WEDNESDAY/... 1040-mb high pressure system will continue to build across the northeastern US through tonight as low pressure organizes across the south central US. The primary low will eject northeastward into the Great Lakes during the day Wednesday with a secondary low developing off the Mid-Atlantic coast Wednesday evening. This setup will provide for warm overrunning aloft with cold air damming in the low levels.
High clouds will be on the increase through the remainder of the day today ahead of the organizing system. High temperatures will reach into the upper 30s to mid 40s, warmest across central VA, coolest across northern MD.
Temperatures will radiate this evening before cloud cover lowers and thickens. This will allow for temperatures to fall back into the 20s to around 30 degrees.
Precipitation will then move towards the area late this evening, and overspread the region from southwest to northeast overnight into early Wednesday morning. A strong area of frontogenetical forcing will move across the area, and a band of moderate to potentially heavy snow is expected across the area Wednesday morning. Localized rates of 1" per hour are possible in this band. At any given location, a 4-6 hour period of snow is expected before the strong warm air advection pulls in a warm nose aloft causing snow to mix with and change over to sleet during the mid to late morning hours Wednesday for most locations, and early afternoon across northeastern Maryland. An extended period of sleet then appears likely for a good portion of the area before warming continues, changing precipitation to freezing rain and then rain. Freezing rain will persist the longest for portions of eastern WV, western MD, and northwestern VA near/west of the Blue Ridge.
Snow and sleet totals from 3-6" appear most probable for locations along/west of I-95, with some areas in excess of 6" near/west of the Blue Ridge and northern MD. 2-4" of snow/sleet likely for areas south/east of I-95. This will then be followed by a light glaze of ice accrual along/east of I-95 with a tenth to two-tenths west of the I-95 corridor. Some locations may see up to three-tenths in the favored locations west of the Blue Ridge.
SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY NIGHT/... Temperatures will continue to gradually warm Wednesday night with precipitation gradually changing over to plain rain. The favored locations west of the Blue Ridge may remain below freezing until the early morning hours on Thursday.
Westerly flow and drying conditions will take place on Thursday with rain ending in the morning. Highs will reach the upper 40s to upper 50s. Lows Thursday night in the 30s.
LONG TERM /FRIDAY THROUGH TUESDAY/... High pressure located over our region on Friday will begin to retreat to our north as a low pressure system to our west moves over the Great Lakes region. A warm front associated with the surface low over the Great Lakes region will move northward into our region from Carolinas. The front will start to impact our region by late Friday night and into early Saturday. Precipitation due to overruning of the warm front is forecast to affect our area late Friday. Areas over northwestern Maryland will have the potential to experience a brief period of wintry precipitation as temperatures will hover near freezing at the surface. Rain is mainly expected for most of the area as the warm front moves through on Saturday.
The warm front is forecast to move to our north by Sunday morning and stall over Pennsylvania. This will place our region in the warm sector leading to rising temperatures through Sunday. Showers will be possible through Sunday afternoon as warmer and more moist air is transported into our region. Temperatures could reach up into the 60s during the day. There is some agreement that energy from the surface low over the Great Lakes may transfer along the warm front and form a secondary low along the eastern sea board near New Jersey and New York. This could act as additional focus for more showers to form in our region. The cold front associated with the low pressure system moving to our northwest will move through our region sometime Sunday afternoon bringing more widespread rain.
Behind the frontal passage Sunday evening, winds will become westerly with upslope induced showers possible along the the Allegheny Highlands and the Appalachian spine. High pressure is forecast to build into our region from the midwest through Tuesday morning. Temperatures will trend back downward behind the frontal passage.