A line of severe storms passed through the Louisville area late Tuesday morning, triggering tornado warnings and producing a possible tornado touchdown along the Ohio River.No major damage had been reported as of midday, but there are numerous power outages.The same system swept across Indiana, leaving some 60,000 utility customers without power, inlcuding 40,000 Duke Energy customers in central and southern Indiana.As of midday Tuesday, Louisville Gas and Electric Company reported about 5,000 customers without service, but the number was expected to fluctuate as the weather system moved eastward.No injuries have been reported in the region.