Wednesday, August 19, 2026

Cold front moving in today

 





High pressure is pushing east as a cold front moves out of the Great Lakes, bringing some showers and a few thunderstorms. The front will slowly move through the region today, with the high pressure exiting tonight.

On Thursday the cold front with the low pressure will continue to move through and produce scattered showers and thunderstorms. Some of these thunderstorms will be strong to severe. The Storm Prediction Center (SPC) has a Marginal Risk for severe storms for the Delmarva, Maryland, Delaware, Southeastern Pennsylvania and New Jersey, this includes Washington DC and Philadelphia. So along and east of this part of the I-95 corridor, the main risk will be damaging wind gust and heavy rain that could lead to localized flooding. There will also be a slight risk for some hail.


The Weather Prediction Center (WPC) has this part of the region at risk for some flash flooding.  


For Friday late afternoon into Saturday low pressure will form along the boundary, bringing the risk for scattered showers and thunderstorms tomorrow afternoon. Most of these won’t be severe. But I can’t rule out a few strong to severe storms across southern Maryland and Delaware, but those with the best chance of seeing severe storms will be from southeastern Virginia down into central and coastal areas of the Carolinas. For the rest of the region Friday shouldn’t be too bad with only the risk for a few isolated showers.  Saturday will see this area of low pressure move north and east, bringing rain showers and some thunderstorms to southern New England. Then for Monday through Wednesday, we will be dealing with troughs, keeping things unsettled.