Forecasters were checking out a report of a possible tornado touchdown in San Antonio late Thursday afternoon.
A line of severe thunderstorms packing high winds passed through the area around 4 p.m., and a meteorologist with the National Weather Service in Ruskin said it was possible that the system could have spawned a tornado.
But the reported tornado sighting remained unconfirmed Thursday night.
"There was some rotation showing up higher in the clouds," said Sanford Garrard, the meteorologist.
"And it's not out of the question that something could have hit the tops of the trees."
An old hardwood tree along Fourth Avenue apparently succumbed to the gusts, and volunteer firefighters in San Antonio said at least three trees were felled by lightning.
The heavy rains also caused minor street flooding.