Baltimore residents, brace yourselves for a roller-coaster ride of weather conditions as we head into the year's final days. The National Weather Service Baltimore MD/Washington DC issued an early morning forecast discussion, signaling intense pressure to keep the cold air wedged tightly down the East Coast. Patches of dense fog mingling with below-freezing temperatures in western Maryland and eastern West Virginia could result in icy conditions this morning, fostering a special weather statement highlighting the threat.
A cold air damming scenario will continue tonight, maintaining its grip along the eastern seaboard. According to the forecast, spotty light rain or sprinkles are expected to begin southwest of the Potomac River by nightfall. The high-pressure system slowly retreats later today, paving the way for these slight precipitation chances. Winds are also forecast to pick up, especially over the higher elevations, with gusts potentially reaching 30 to 40 knots.
By Saturday, there's still a bit of uncertainty regarding temperature forecasts because of the lingering cold air damming effects. The National Weather Service has favored the more astonishing predictions, suggesting highs in the upper 40s to low 50s. But don't get too comfortable, as light rain bands are anticipated to make things damper. A noticeable uptick in rainfall intensity is expected by Saturday night due to a shortwave energy wave moving in from the Tennessee Valley.
Winds are expected to increase substantially ahead of Sunday's cold front. The Storm Prediction Center has even placed western parts of the region at a marginal risk for storm-induced damage. The NWS forecast warned that instability will be the biggest concern regarding this Sunday system. If storms become surface-based, they pose a threat with damaging wind gusts.
Looking further ahead into the transition from 2024 to 2025, a weather front is predicted. Post-frontal showers might linger into early Monday, with temperatures expected to reach the 50s. Yet, another shortwave trough is eyed to create a soggy Tuesday, muddying New Year's Eve plans. While specifics remain hazy, temperatures are again forecast to sit comfortably above the average for late December.
The current cold air damming conditions will influence visibility and wind conditions for those concerned about aviation and marine impacts. The NWS has hinted at the likelihood of Low-Level Wind Shear (LLWS) conditions by Saturday. Small Craft Advisories may be warranted as the winds shift and intensify over the weekend.
As for coastal concerns, Sunday's storm system might heighten tidal anomalies. Areas like Annapolis must watch out for potential minor flood stages over the weekend. However, a swift drop in tidal anomalies is expected as the front exits and wind directions alter post-event.
Baltimore is gearing up for an active end to the year, with a mix of hazardous fog, transitional temperatures, gusty winds, rain, and even a slight chance of thunderstorms to add to the mix. Caution and preparedness are advised across the board as these varied elements converge into a potent cocktail of end-of-year weather.
