The U.S. Geological Survey is on the frontlines before first responders to report water conditions that help inform them of future weather events.

The search is underway for two people who were swept away by floodwaters in San Antonio, Texas. Heavy rain caused flash flooding across the city, killing at least five people according to officials. TODAY’s Al Roker tracks the forecast.

Residents across Central Texas are left with with damaged property after the area experienced record-breaking rain, dangerous winds and a short-lived tornado on Thursday, June 12. Several towns, many of which are in the San Antonio metropolitan area, are also experiencing flash flooding, resulting in a number of road and river closures.

Slow-moving storms could result in flash flooding across parts of Central and South Texas. Hail and strong winds are possible, too.

Heavy rain and storms trap drivers in high water on San Antonio's northeast side Thursday morning. SAN ANTONIO — Drivers are getting stuck in dangerous high water at Thousand Oaks and Wetmore on the northeast side of San Antonio Thursday morning after heavy rain and storms throughout the early morning hours.