We have managed to sneak through much of this summer without a true taste of heat and humidity combined. It looks like our lucky streak has ended and summer is here to stay for quite a few days. This will include an increasing threat for storms this week.
A disturbance over Illinois will move eastward later today and spawn a cluster of thunderstorms well to the west of Cincinnati. Meanwhile, daytime heating combined with a humid atmosphere could lead to a few isolated thunderstorms back here in the Tri-State. It is not 100% clear whether the storms west of Cincinnati will make it all the way here tonight. If they do, the best chance will be after 9 p.m. for you to hear some rumbles of thunder and get in on a few downpours.
Weak wind shear and waning instability after dark will limit the potential for severe weather however an isolated strong wind gust is not out of the question if any of the storms make it here late this evening. The Storm Prediction Center has placed areas west of I-75 in a sight risk for severe weather. Highs today will top out in the middle to upper 80s.
Wednesday is looking generally dry across the area with highs pushing the upper 80s once again. The combination of heat and humidity could allow for a storm or two to pop however organized activity is not anticipated.
A frontal zone southwest of Cincinnati is expected to become more active and push northeast into the region Wednesday night. This could lead to development of a few thunderstorms overnight and into the morning hours Thursday. Any sunshine on Thursday will only aid in further development of scattered thunderstorms. The expected rain should keep highs down a few degrees from Wednesday.
Scattered thunderstorms will continue to be possible Thursday night and Friday as weak disturbances roll through in a northwest flow pattern aloft. A ridge of high pressure will attempt to build in this weekend pushing the storm zone northeast of Cincinnati. With that region of storm activity nearby, slight chances for storms will be left in the forecast for now this weekend.
Depending on how much that ridge of high pressure is able to build in, we could be looking at the hottest weather of the season as highs push into the 90s and the humidity remains at high levels as well.
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