Sheridan County
Flood Watch issued September 20 at 4:32AM MDT until September 20 at 6:00PM MDT by NWS Billings MT
Showers are turning light and tapering off along the western foothills, but healthier showers will continue over central and eastern portions of the forecast area today. The risk of flooding continues. * WHAT...Flooding caused by excessive rainfall is possible, along with flash flooding over recent burn scars. * WHERE...Southeast Montana and Sheridan County Wyoming. * WHEN...Through this afternoon. * IMPACTS...Excessive runoff may result in flooding of creeks and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. The risk of flooding will diminish late this afternoon and evening as showers taper off. * ADDITIONAL DETAILS... - The heaviest rainfall is slowly shifting eastward to southeast Montana and northeast Wyoming. - The Elk and McGhee-Remington burn scars are particularly vulnerable to flash flooding and debris flows. Any other burn scars from this summer will have elevated flash flood potential as well. - http://www.weather.gov/safety/flood
Flood Watch issued September 20 at 2:10AM MDT until September 20 at 6:00PM MDT by NWS Riverton WY
* WHAT...Flash flooding caused by moderate to heavy rainfall is possible, especially in terrain and poor drainage areas. * WHERE...Portions of central and north central Wyoming, including the following areas, in central Wyoming, Owl Creek and Bridger Mountains. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County and Southeast Johnson County. * WHEN...Through this afternoon. * IMPACTS...Excessive rainfall may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas and around steep terrain. * ADDITIONAL DETAILS... - A slow moving weather system will bring rounds of showers and thunderstorms to the region. Any shower or thunderstorm could produce moderate to heavy rainfall across the Watch Area. - http://www.weather.gov/safety/flood
Hydrologic Outlook issued September 19 at 11:59AM MDT by NWS Riverton WY
ESFRIW Periods of showers and thunderstorms are expected across the northern half of Wyoming Saturday and Sunday as a wet weather system shifts east across the state. This weather system is funneling abundant tropical moisture into northern and eastern portions of the state with it's eastward progression. Given the high moisture content, many thunderstorms could feature heavy rainfall and possibly lead to localized flooding. Poor drainage areas, urban areas, and steep terrain will be the most susceptible locations for this isolated flooding. Many locations could see an additional 0.5" to 1.25" of rain through Sunday afternoon, with a majority of this rain falling quickly in thunderstorms. Remember, if you encounter a flooded roadway, turn around don't down!
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