Parts of northwestern Harris, southwestern Montgomery and northeastern Waller counties were briefly under a tornado warning Tuesday afternoon, the National Weather Service said, as the prospect of severe storms on Christmas Eve loomed.

A pair of storms will disrupt travel across the south-central U.S. during the Christmas holiday, bringing intense thunderstorms, flash flooding, and localized fog from Texas to Arkansas and Louisiana.

On Tuesday at 10:14 a.m. the NWS Fort Worth TX issued an updated flood advisory. Flooding caused by excessive rainfall continues for Southern Parker County until 11:30 a.m. "Minor flooding in low-lying and poor drainage areas," explains the NWS. "Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles."

On Tuesday at 11:16 a.m. an updated flood advisory was issued by the NWS San Francisco CA. Urban area and small stream flooding caused by excessive rainfall continues for portions of Oakland, Piedmont, and Berkeley as well as bayshore regions of Contra Costa and Alameda counties in central California until 1:45 p.m.