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Risk for strong storms again Wednesday

Highest threat across southern Ohio, but isolated severe are still possible here.
Highest threat across southern Ohio, but isolated severe are still possible here.
Mike Groenke, SPC, NOAA

A cold front will sag south through the region on Wednesday. This front will spark a complex of thunderstorms tonight near Chicago that may impact Columbus by Wednesday morning. More storms will be possible late in the afternoon on Wednesday. For Tuesday evening, mostly cloudy skies and only a stray sprinkle are expected. Temperatures will stay fairly mild in the lower 70s to upper 60s.

Showers and thunderstorms are developing near a cold front in southern Wisconsin this afternoon. These are forecast to merge into a large complex called a MCS (Meso-scale Convective System). This large batch of storms will march eastward tonight and carry a risk for strong damaging winds. The storms will begin to weaken as they approach Columbus early Wednesday morning around the morning commute, but a few strong gusts of wind will remain possible.

The exact timing and track of this batch of storms is still in question (as is typically the case with any MCS) through the morning hours Wednesday. Depending on how fast skies clear out by early afternoon, an additional severe weather threat may unfold.

The highest risk for severe weather on Wednesday will be just south and southwest of the immediate Columbus area. But should enough sunshine get through to destabilize the atmosphere, more than enough wind shear will be present to organize storms and aid in development. Damaging winds and large hail will be the main threats for the potential batch of scattered storms between 4 p.m. and 9 p.m. Wednesday. Should skies stay cloudy longer, storms will be weaker and lower in coverage. Expect a high in the upper 70s to near 80 degrees on Wednesday.

Behind the cold front, temperatures will fall back into the lower and middle 70s for the remainder of the week. Absolutely gorgeous weather appears to be in the cards for the Memorial Day weekend! A “traffic jam” of sorts will develop in the atmosphere which will not allow much propagation of weather system. Luckily for us, high pressure will get stuck overhead! Highs will near 80 degrees on Sunday and head for the lower 80s on Monday.

Going into next week, a ridge of high pressure will build northward in the jet stream bringing in very warm and humid air to the region making the first unofficial week of summer feel very much like summer!