Residents in Baltimore and the surrounding regions should expect weather improvements as the coastal low pressure that has been affecting the area starts to move away, per the latest briefing from the National Weather Service Baltimore MD/Washington DC. The service's early morning report indicates that while a heavy mist had covered the eastern half of the area, especially northeast of the DC Metro, conditions are anticipated to get better by the afternoon, with the precipitation ending by late morning beyond the Blue Ridge and potentially early afternoon east of I-95.
Despite the low-pressure system's departure, northwest winds are expected to remain firm, gusting at around 20-25 mph. This weather pattern will introduce a cold front tonight, ushering cooler air into the region and lowering temperatures to mid/upper 40s west of the Blue Ridge and low 50s to the east. The day's highs will see the low 70s west of Blue Ridge, where more sunlight is probable, whereas the east can anticipate the upper 60s to around 70°F.
Come Wednesday, a cold front will sweep through the area according to the weather service, bringing in a range of temperatures from the low to mid 70s south of I-66, while the north will experience a cooler high in the upper 60s to around 70°F. Breezy conditions again due to downsloping northwest winds gusting around 20 mph during the afternoon, the report adds. Looking ahead to Thursday night, it's likely to be the coldest night of the week as high pressure centers around the Ohio Valley to Pennsylvania, with potential frost and freezing temperatures, especially west of US-15.
The long-term forecast, extending through Monday, indicates that while high pressure will keep conditions dry and temperatures near normal on Friday, they will rise above average on Saturday. However, by Sunday, a shift in the weather pattern may bring increased chances of showers, potentially extending into early Monday. The chance of showers will increase during this time, possibly lingering into early Monday, depending on the timing of the front, the service details. Following the front's passing, Monday's temperatures are predicted to fall below the norm.
As for aviation conditions, VFR is expected to return to all terminals by late afternoon today, with a cold front passing through tonight. Northwest winds are forecast to gust around 20 knots each afternoon through midweek. Marine conditions are also set to improve with sub-SCA conditions anticipated by Friday and into Saturday when high pressure dominates. Meanwhile, coastal flooding seems unlikely in the coming days due to the persistent gusty northerly winds, though some areas may experience minor fluctuations during high tide.
