Flash Flood in Starr County, Texas

Torrential rain that was estimated by bias-corrected radar between 3 and 5 inches in 2 hours or less created localized flash flooding in and near Rio Grande City. A CoCoRaHS observer in La Lomita Colonia 3.5 miles northeast of Rio Grande City reported 3.65. Law enforcement reported multiple flooded roadways due to heavy rainfall, as well as flooded streets (with some flowing water) near FM 3167 and Eisenhower Blvd. in the northwest portion of town, with side streets flooded as well.

A repeating band of slow-moving showers and thunderstorms over the Weslaco/Donna area during the early to mid morning of June 15th produced areas of notable flash flooding. Up to 7 inches of rain fell in a little more than two hours, leaving some streets with up to three feet of water depth and water into several properties. Another round of thunderstorms developed during the late afternoon across Starr and Jim Hogg County, with urban flooding across portions of Rio Grande City based on an estimated 3-5 of rainfall there.