45°15'北 / 111°18'西 / 高度 1925 m / 23:10 2026-09-18, America/Denver (UTC-6)
開始于: 2026-09-18, 13:10
到: 2026-09-19, 07:00
* WHAT...Flash flooding caused by moderate to heavy rainfall is possible, especially in terrain and poor drainage areas. * WHERE...Northwest Wyoming, including Yellowstone National Park. * WHEN...Through Sunday afternoon. * IMPACTS...Heavy rainfall may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage areas and around steep terrain. * ADDITIONAL DETAILS... - A slow moving weather system will move across Wyoming today through Sunday and bring rounds of showers and thunderstorms to the region, especially northern Wyoming. Any shower or thunderstorm could produce moderate to heavy rainfall across the Watch Area. - http://www.weather.gov/safety/flood
Gallatin
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
NWS Riverton WY
2026-09-18, 13:10開始于: 2026-09-18, 18:00
到: 2026-09-19, 06:00
* WHAT...Flash flooding and debris flows caused by excessive rainfall are possible over the Horse Gulch area and burn scars from the summer of 2026. * WHERE...A portion of central Montana, including the following areas, Big Belt, Bridger and Castle Mountains, Elkhorn and Boulder Mountains and Little Belt and Highwood Mountains. * WHEN...From 6 PM MDT this evening through Saturday evening. * IMPACTS...Heavy rainfall over the Horse Gulch area and burn scars from the summer of 2026 is expected up to and during the period of the watch. Residents near the Horse Gulch area and burn scars from the summer of 2026 should prepare for potential debris flow. Be sure to stay up to date with information from local authorities. Heavy rainfall could trigger flash flooding of low-lying areas, urbanized street flooding, and debris flows in and near recent wildfire burn scars. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall over recent burn scars, which may lead to flash flooding and debris flows. - Some locations that may experience flash flooding include... Areas near recent burn scars from the summer 2026 and the Horse Gulch area. - http://www.weather.gov/safety/flood
GallatinYou should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.NWS Great Falls MT2026-09-18, 10:39開始于: 2026-09-18, 18:00
到: 2026-09-19, 06:00
The Flash Flood Watch has been changed to a Flood Watch.
GallatinYou should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.NWS Great Falls MT2026-09-18, 10:39