On the weather map, a plume of tropical moisture just off the East Coast is forecast to retrograde, thanks to a ridge of high pressure building from the Atlantic Ocean to the coast. This will force warm and wet weather inland. While the features causing heavy rain will diminish overnight, the moisture rich air will keep us at risk for an isolated shower overnight. Any lingering heavy rain should move out of CNY after midnight.
Tuesday will feature yet another day of unwanted rainfall as the plume of moisture remains close to central New York. We may catch a break through the first half of the day, but daytime heating will spark scattered showers and thunderstorms. The biggest threat from the storms will be locally heavy rain and additional flash flooding.
If there is any good news this week it is the fact that the deepest moisture will probably shift to the west of Syracuse during the middle of the week as high pressure strengthens and continues to build west. That doesn’t mean the showers and thunderstorms will come to an end but we think they will become more scattered in nature. In addition, temperatures will rise over the next couple of days. Mid 80s will be commonplace by the middle of the week and stay there into the upcoming weekend.