* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. A portion of southwest New Mexico, including the following areas, Central Grant County/Silver City Area, Eastern Black Range Foothills, Southern Gila Foothills/Mimbres Valley, Southern Gila Region Highlands/Black Range and Upper Gila River Valley. * WHEN. From Saturday afternoon through late Saturday night. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Low-water crossings may be flooded. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS. - Moist atmospheric conditions will persist over the region with slow moving and training storms producing heavy rainfall with a potential for flash flooding along drainages and streams. - http://www.weather.gov/safety/flood