The National Weather Service in Baltimore MD/Washington DC has released a forecast for the Baltimore area, noting that residents should expect high pressure to dominate the region, with a pair of cold fronts set to cross through later in the week. According to the weather service, despite a surface high-pressure system centered over the Great Lakes, a shortwave from the Ohio Valley is predicted to bring an increase in clouds throughout the day and into tonight, though conditions are anticipated to remain mostly dry except for some possible isolated showers around Highland and Pendleton Counties.
As we move into the short term, Monday through Tuesday night, the forecast appears much the same—generally stable, with the upper low lingering and surface high pressure wedged along the Appalachians, even as low pressure develops off the coast this northeasterly flow might result in slightly cooler temperatures and a cumulus field dense enough to be considered fairly robust despite the fact this moisture will be limited and shallow, it's unlikely that any significant weather disruptions will occur, with highs stretching to around 80 degrees and overnight lows dropping less, into the 40s and 50s over the region.
Looking towards the latter half of the week, the National Weather Service's discussion suggests a continuation of the broad trough over the eastern United States, with an emphasis on the strong shortwave anticipated to dive into the Great Lakes around Wednesday night into Thursday, which will likely usher in a more weather pattern - including rain chances and the potential for gusty showers and thunderstorms as two surface cold fronts make their way across the area.
For aviation interests, VFR conditions are expected to persist until Wednesday, with a slight possibility of sub-VFR conditions due to warm air advection showers and, come Thursday, more pronounced disturbances may accompany showers and thunderstorms linked with the strong cold frontal passage; these disturbances may manifest in sub-VFR and gusty winds, so pilots should remain vigilant during this potential weather event. The marine forecast similarly indicates a period of calm before the possibility of Small Craft Advisories, with winds predicted to strengthen ahead of the Wednesday cold front after high pressure moves out of the area; mariners should be prepared for rougher conditions, particularly going into Thursday.
Coastal areas should note that while water levels have risen, no flooding is expected until at least Monday morning, though by Monday evening the situation could change due to low pressure and easterly winds, which may contribute to water pile-up and potential minor flooding; residents in sensitive shoreline areas, like Annapolis, are advised to stay informed on possible increases in water levels.
