Low pressure over the mid Mississippi Valley this morning, will track northeast reaching the lower Ohio Valley tonight. Deep moisture will stream northward across the area in advance of this system. Clouds will increase today, and scattered showers and a few thunderstorms will be possible this afternoon.
Showers and thunderstorms will become more widespread across the area tonight as a warm front lifts northward across the region. Rainfall could be locally heavy.
On Wednesday, the low will move to the eastern Great Lakes, and the warm front will lift northward, reaching Lake Erie by mid day. There is a chance of showers and storms early, then we will probably see a break in the activity. Another round of showers and storms is expected during the afternoon as a weakening cold front moves east across the state.
Wednesday night, showers and storms are likely through the evening, then activity is expected to taper off after midnight. Another system will drop southeast into the western Great Lakes late Wednesday night. This system will reach our area by Thursday afternoon. After a dry start to the day Thursday, clouds will build and showers and storms will redevelop during the afternoon.
Here is the forecast: For today, partly cloudy with a chance of a shower or thunderstorm this afternoon. Highs will be near 80. Winds E 5-10 mph.
Tonight, mostly cloudy with showers and thunderstorms likely. Lows will be in the mid 60s. Winds SE 5 mph.
Wednesday, mostly cloudy with showers and thunderstorms likely. Highs will top out around 80 degrees. Winds S 10-15 mph.
Wednesday night, showers and thunderstorms likely during the evening, then partly cloudy. Lows will be in the mid 60s.
Thursday, partly cloudy with showers and thunderstorms likely. Highs will be around 80.
Extended Analysis: A low pressure system over the Great Lakes Thursday night, will move into Ontario Friday, dragging a cold front southeastward across our area. Showers and thunderstorms are likely Thursday evening, then skies will become partly cloudy overnight.
A few scattered showers and thunderstorms could develop Friday as the cold front moves across the state.
Friday night, a cooler and drier air mass will settle southward across the area. Skies will clear out Friday night, with a sunny and pleasant day expected on Saturday.
The fair weather will continue through Sunday as high pressure builds across the region.
Here is the extended forecast: Thursday night, partly cloudy with a chance of showers and thunderstorms, mainly during the evening. Lows will be in the low to mid 60s.
Friday, partly sunny with a chance of a shower or thunderstorm. Highs will be in the mid to upper 70s.
Friday night, partly cloudy with lows in the low to mid 50s.
Saturday, mostly sunny with highs in the mid 70s.
Saturday night, clear with lows around 50.
Sunday, mostly sunny with highs around 80.