A weak backdoor cold front will wash out over the next 24 hours. However, combined with a decent sea breeze front, enough lift may take place for some isolated...but strong thunderstorms...especially North and East of Philadelphia early tonight. Temperatures are in the seventies across Monmouth and Ocean Counties, while Philadelphia is in the lower 90s as of just before 5 o'clock. That is quite a contrast...and enough of a difference to get things going in the convective department. However, we only have a few more hours of daylight and the activity should die off a few hours after sunset...so there will be a limited amount of time for thunderstorms to develop and survive.
On Tuesday, a strong cold front will approach the region and slowly move through. It may not be until Thursday before the front gets out of here. By then, an area of low pressure will develop and could enhance thunderstorm activity along the boundary. At this moment, there is some hope that an area of high pressure trying to build in could keep the low from riding up right at us and move the front far enough away from us to have a heavy rainfall threat. We will watch this throughout the week as the timing of the high building in could change. We still have some spokes of energy for late week and early in the weekend that may warrant a shower mention in the forecast...but at this point...most of the weekend does look dry.