Showers and thunderstorms bring cooler temperatures to the Valley; Excessive rain possible for the weekend

Showers and thunderstorms will be possible with the passage of a cold front today. This boundary will remain situated across the upper Ohio Valley, maintaining precipitation chances, through the weekend, with the remnants of Gordon leading to a period of more persistent rain by early next week.

It will remain muggy and warm this morning, but relief from the heat and humidity we’ve been suffering through these last several days will finally come to an end. A cold front will travel south through east-central Ohio today accompanied by showers and thunderstorms.

Abundant moisture and instability will be sufficient for thunderstorms but weak upper-level shear will keep storms from getting too rambunctious. A few thunderstorms may produce gusty wind gusts and/or heavy rain but severe thunderstorms are not expected here.

Temperatures this afternoon will still be above average but not as hot as the last several days.

TIMING
We should remain dry through the morning with increasing clouds as the front approaches. Shower and thunderstorm chances will become likely after 3:00 PM. Hi-res futurecast radar through midnight tonight:

Coverage of showers and storms will diminish after sunset and the loss of daytime heating. An isolated shower or two will remain possible overnight, though.

The cold front will eventually sink south into West Virginia and stall out there for Friday. The threat for spotty showers and an afternoon thunderstorm will remain through tomorrow with that boundary nearby. The good news for most of us is that cooler air will start to move in over the region allowing temperatures tomorrow to top out about 10 to 12 degrees cooler.

WEEKEND WEATHER
Heavy rainfall is becoming a concern as the remnants of Tropical Depression Gordon lift northward into the central Great Lakes region over the weekend.

While there remain sufficient differences in the exact path of the system for specific impacts yet today, but the potential for deep tropical moisture leading to excessive rainfall is definitely something we need to watch.

The models also differ on the exact areas of heaviest rain at this point. But, the threat for some serious rain Saturday night through Monday morning is there.

The WPC and computer models often overestimate the amount of rain so don’t take the projection shown here as 100-percent right. We will, however, get a good deal of rain anyway you look at it.

IMPORTANT
Questions remain regarding the exact path and therefore, the exact areas where the heaviest rain will occur. There will be rain – The question is how much and will it be excessive enough to cause flooding in our area. Adjustment to the precipitation forecast will certainly happen over the coming days. If you live or work in an area prone to flooding, pay attention to the forecasts over the next couple of days.

I will continue to monitor the situation over the coming days and keep you updated.

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