A pair of low pressure systems will impact the Delmarva region from Friday night through the weekend, bringing periods of light rain, gusty onshore flow, and a return to below-average temperatures.
The first system, a weak area of low pressure, is expected to pass through the region Friday night. This will deliver a quick shot of light precipitation, with most areas seeing minimal rainfall totals. Impacts from this initial system appear limited, but it sets the stage for a more complex setup heading into Saturday.
Attention then turns to a stronger system developing to the south. A deep upper-level trough digging across the Midwest and Gulf Coast states will help spawn a more organized area of low pressure over the southeastern United States. This system is forecast to lift north toward the Mid-Atlantic during the day Saturday before tracking offshore by Saturday night into Sunday.
For Delmarva, this track is critical. Current trends suggest the heaviest rainfall will remain offshore, particularly east of the coastline. However, wraparound moisture on the backside of the system will likely spread clouds and occasional rain back into the region, especially across Delaware and far southeastern New Jersey where rain chances are highest.
While this will not be a washout for most, periods of light rain and persistent cloud cover are expected through at least part of the weekend. The combination of onshore flow and thick cloud cover will also keep temperatures suppressed, with highs generally stuck in the 50s to low 60s, well below late-April normals.
Overall, the weekend will feature more clouds than sun, with occasional showers and a cool, damp feel. While beneficial rainfall is possible in spots, the bulk of the system’s moisture is expected to remain just offshore, limiting more widespread or heavier totals across the region.