A storm system is forecast to move from the Mississippi Valley today, into the Great Lakes tonight and Tuesday, dragging a cold front eastward through the eastern Great Lakes on Tuesday. Mild air will stream northward across the region today helping us rebound from last night’s frosty temperatures.
Precipitation will break out late this afternoon across lower MI and spread eastward across the region tonight. Precipitation will likely begin as rain in most areas, however temperatures aloft and at the surface will cool as the precipitation initially falls through drier air. Temperatures are currently forecast to fall critically close to the freezing mark overnight making a change over to freezing rain or snow possible.
In areas where the change over does occur, some snow accumulation will be possible late tonight. The greatest threat of accumulating snow late tonight will be across inland northeastern OH, northwestern Pennsylvania, and western NY.
Any lingering rain or mixed precipitation Tuesday morning will change to snow showers as a cold front sweeps across the area. Some light accumulations are possible.
A cold westerly flow will develop behind the front and temperatures will fall Tuesday afternoon and Tuesday night. Lake effect snow will be possible to the east of the lakes Tuesday night and Wednesday. Winds may become west-southwesterly for a time which could push some heavier snow into the Buffalo metro area. This is something that will have to be watched.
The lake effect activity will quiet down Wednesday night with most locations seeing a break in the weather on Thursday. However, another storm will already be approaching from the west. This looks like another mixed precipitation event for Friday, however at this time, amounts look to be rather light.