Big Horn County
Flood Watch issued July 22 at 3:16PM MDT until July 23 at 2:00AM MDT by NWS Billings MT
The combination of a moist and unstable air mass with slow moving thunderstorms capable of producing very heavy rain, will bring a risk of flash flooding late this afternoon and evening. * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Livingston Area, Northern Carbon, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...Until 2 AM MDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, streams, and other low-lying and flood-prone locations. Recent burn scars, including the Robertson Draw and East Side south of Red Lodge, and the Elk along the eastern slopes of the Bighorn Mountains, are at risk of experiencing flash flooding and debris flows. * ADDITIONAL DETAILS... - Thunderstorms capable of producing very heavy rain are expected late this afternoon and evening. These storms may cause localized flash flooding. - http://www.weather.gov/safety/flood
Flood Watch issued July 22 at 12:54PM MDT until July 23 at 6:00AM MDT by NWS Riverton WY
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming, including the following areas, in central Wyoming, Casper Mountain, Green Mountains and Rattlesnake Range, Lander Foothills, Natrona County Lower Elevations, Owl Creek and Bridger Mountains, Southwest Bighorn Basin, Upper Wind River Basin, Wind River Basin, Wind River Mountains East and Wind River Mountains West. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County, Southeast Bighorn Basin and Southeast Johnson County. In northwest Wyoming, Absaroka Mountains, Cody Foothills, Jackson Hole, North Bighorn Basin, Teton and Gros Ventre Mountains and Yellowstone National Park. In south central Wyoming, East Sweetwater County, Flaming Gorge and Rock Springs and Green River. In southwest Wyoming, South Lincoln County. In west central Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green River Basin and Upper Green River Basin Foothills. * WHEN...Until late Wednesday night. The most likely period of possible flooding is between 3pm Wednesday through 4am MDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Slow moving showers and thunderstorms and abnormally high moisture in the air can bring locally heavy rainfall that could lead to flooding. - http://www.weather.gov/safety/flood
Flood Advisory issued July 22 at 3:21PM MDT until July 22 at 6:15PM MDT by NWS Riverton WY
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northwestern Park County in central Wyoming... North Central Teton County in northwestern Wyoming... * WHEN...Until 615 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Overflowing poor drainage areas. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 321 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - This includes the following streams and drainages... Canyon Creek, Sour Creek, Secret Valley Creek, Alum Creek, Virginia Cascade, Observation Peak Creek, Gibbon Geyser Basin, Mary Mountain Creek, Cougar Creek, Paintpot Hill Creek, Gibbon River, Cascade Creek, Yellowstone River, Elk Antler Creek, Nez Perce Creek, Gibson Geyser Creek, Otter Creek, Cowan Creek, Spruce Creek, Firehole River, Solfatara Creek, National Park Mountain Creek, Duck Creek, Trout Creek, Madison River and Madison Valley Drain. Additional rainfall amounts of 0.5 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Madison, Canyon, Virginia Cascade, Norris Junction, Gibbons Falls, Lower Falls and Harlequin Lake. - http://www.weather.gov/safety/flood
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