BALTIMORE (WJZ) – Today will provide most of the Greater Baltimore area with an opportunity to dry out. The slow-moving front that was the focal point of rain yesterday is now well off shore. However, there’s still a pool of cold air aloft located over upstate New York, northern New England and in southeastern Canada. With some clearing expected to occur during the pre-dawn hours and a few hours of sunshine expected after daybreak, the day’s heating will be interacting with some of that colder air aloft to cause clouds to start billowing up. In addition to those cool and gusty breezes, there may be just enough instability generated by the atmosphere to trigger these widely separated showers across Pennsylvania and in other areas well north of the Mason-Dixon Line.
Most temperatures in Maryland this afternoon will be in the 60s, but the breeze will make it feel cooler. Anticipate clearing tonight, along with a diminishing wind. Therefore, it’ll be on the chilly side, with most lows in the 40s, except the 30s in some of the typically colder spots. A ridge of high pressure will TEMPORARILY build into the Eastern Region tomorrow. In fact, since we’ve been talking for the past few days about how there’ll be a series of impulses of energy moving across the northern tier of states in a rather fast-moving flow, it’d be prudent to talk about sunshine tomorrow followed by increasing clouds. Before the evening rush tomorrow, we could see a couple of showers and even a thunderstorm appear on the regional radar mosaic. This activity should come to an end by early tomorrow night.
We want to be “cautiously optimistic” about Saturday. If the next trough of low pressure aloft manages to push to the east early enough), then Saturday will just turn out partly sunny, breezy and dry with highs in the mid-70s. Another impulse of energy following on the heels of the one late tomorrow is expected to sweep in from the Great Lakes for Sunday. It has the potential, too to bring a couple of showers to eastern Pennsylvania. High temperatures, though are still expected to be in the 70s for Mother’s Day.
One “apparent change” you may have been noticing about the longer range is that we’ve gone ahead and dried out the forecast for Monday.