We have a cold front approaching from the west today. Ahead of it, we will be dealing with a warm and very humid afternoon. Highs will reach the mid-80s, and dew points will be in the upper 60s to near 70-degrees. This will make it feel even hotter! Heat index values will be up near 90-degrees.
We expect the chance for a few showers and thunderstorms to fire up as the front gets closer. Initially, in the late afternoon, these will be fairly isolated. But showers and thunderstorms will fill in during the evening and overnight hours. Any of them will have the potential to produce heavy rain, and a few could also be strong to severe. A portion of the Miami Valley is included in an Elevated Risk for severe storms:
Damaging winds and hail will be the main threat. The threat will die down as the night goes on, and dry weather returns for the Wednesday morning commute. The front stalls south of us for a day, before moving back north as a warm front on Thursday. This will allow even warmer air to build in for the end of the week and weekend. We could see 90-degree highs by Sunday.