BIRMINGHAM, Ala. (AP) - A severe thunderstorm with a possible tornado moved across west-central Alabama this afternoon.

The National Weather Service issued a tornado warning for three counties in western Alabama and later expanded it to include suburban Birmingham.

A funnel cloud was reported to the National Weather Service at 1:44 p.m. Sunday in Shelby County and a possible small tornado was spotted about one hour later near Riverside in eastern Alabama.

There have been no reports of damage.

The weather service has posted a severe thunderstorm watch for a dozen counties because of the chance of storms in central Alabama into the night, with conditions expected to improve by midnight.

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