Slight damaging wind risk today in extreme northeastern Indiana, northwesten Ohio

See an update to this story (slight risk ends for IWX area).


Damaging wind probability map from 12:30 p.m. EDT convective outlook
Yellow area: 15 percent probability of damaging thunderstorm winds or wind gusts of 50 knots (58 mph) or higher within 25 miles of a point. Brown area: 5 percent probability.

Extreme northeastern Indiana and most of northwestern Ohio is at slight risk of severe weather between 12:30 p.m. EDT today and 8 a.m. tomorrow, according to the Day 1 Convective Outlook that the National Weather Service (NWS) Storm Prediction Center (SPC) issued at 12:13 p.m. The reason for the slight risk is a 15 percent probability of damaging thunderstorm winds or wind gusts of 50 knots (58 mph) or higher within 25 miles of a point in the slight risk area. The risks of large hail and tornadoes are negligible.

In its 12:13 p.m. update, the SPC reduced the size of the slight risk area and shifted it eastward. As a result, the only Indiana counties now included are eastern Lagrange, Steuben, eastern Noble, DeKalb, eastern Whitley, Allen, Wells and Adams. The slight risk area also includes most of the northwestern quarter of Ohio, including all Ohio counties served by the northern Indiana NWS office.

SPC meteorologists wrote that the remnants of an overnight, organized complex of thunderstorms were tracking east-southeastward across parts of lower Michigan, northwestern Indiana and central Illinois at midday. Strong heating was occurring ahead of this activity, where dewpoints were in the upper 60s, indicating a large amount of water vapor in the air. In addition, atmospheric instability was forecast (mixed-layer convective available potential energy of 2,000 joules per kilogram or greater). While the timing was uncertain at the time of the outlook update, the SPC indicated that potential exists for redevelopment of intense storms along the remnant outflow boundary.

Remain alert for the possibility of severe thunderstorm watches and warnings, especially this afternoon.