* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central and northwest Wyoming, including the following areas, in central Wyoming, Owl Creek and Bridger Mountains and Southwest Bighorn Basin. In northwest Wyoming, Absaroka Mountains and Cody Foothills. * WHEN...Until 11 PM MDT this evening. * IMPACTS...Quick water rises on area streams and rivers, especially on small drainages in the mountains and foothills, leading to localized flash flooding, which could endanger people and infrastructure near waterways. * ADDITIONAL DETAILS... - Slow-moving showers and thunderstorms will have abundant moisture today, with dew points in the 50s and 60s, and precipitable water values in excess of 1 inch. An inch or more of rain is possible in under an hour, and some locations could quickly see 1 to 3 inches of rain over an hour or two, leading to flash flooding. - http://www.weather.gov/safety/flood