Washington County, Utah — The National Weather Service has issued a Flash Flood Warning for Washington County, including Snow Canyon State Park and the surrounding Johnson Canyon area. The warning comes in response to heavy rainfall caused by thunderstorms moving through the region. Officials warn that normally dry washes, creeks, streams, and backcountry roads within the park are at risk of flooding. Visitors and residents are advised to exercise caution and avoid low-lying areas prone to sudden flooding. Snow Canyon State Park, known for its scenic red rock formations and narrow canyons, is particularly vulnerable to flash floods due to…