As waves of low pressure sweep through the Ohio region, cities like Columbus and Cincinnati brace for continuing showers and storms that could potentially lead to flooding as the weekend progresses. In a statement obtained by the National Weather Service, "Waves of low pressure will result in more rounds of showers and storms, bringing the prospects for heavy rain and potential flooding into the weekend."
The immediate threat remains significant across the southern parts of the forecast area, where the ground is already saturated with previous rainfall. Moderate to heavy rain is expected to continue, and this has already led to numerous overland and river flooding warnings. Later today, albeit just briefly, a respite in precipitation might present as the initial jet weakens, only to give way to another round of thunderstorms expected to shift northward this afternoon due to another incoming low level jet. Temperatures are likely to fluctuate, ranging from the mid-50s in the north to mid-60s in the south.
The weather conditions suggest no improvement as the weekend approaches, with an active wet pattern persisting. "For tonight, operational and convection allowing models initially suggest that precipitation will try to shift more toward the northwest at first," according to the National Weather Service. With a warm sector caused by a pushing frontal boundary, some areas might see an increase in temperatures alongside stormy gusts potentially reaching up to 25 mph. The risk of isolated severe storm events can't be ruled out either.
Saturday forecasts indicate a greater chance for widespread showers and the potential for severe thunderstorms, especially in the afternoon and evening. The National Weather Service warns of not only the prospect for strong to severe storms, but also "moderate to heavy rainfall will be a threat." In light of the shifting weather front, temperatures may begin to drop in the afternoon as cooler air starts to move in, possibly leading to a range from the lower 60s northwest to the upper 70s southeast. A Flood Watch remains in effect through Sunday morning, a necessary precaution in Ohio, Kentucky, and Indiana.
Looking ahead into the long term, Saturday's showers and storms would continue to increase the risk of flooding. "Rainfall from Saturday into Saturday night will likely be the most impactful overall," the National Weather Service forecasts, emphasizing the potential hazard to rivers already at risk of flooding. As Sunday comes, the heavy rainfall should begin to move out of the region. However, the resulting cold maintains a grip with expectations of high temperatures only reaching into the lower 40s northwest. With weather systems continuously moving through the area, residents should watch for an upturn in precipitation chances by Thursday following a brief dryer interlude.
