The remnants of Hurricane Rosa are expected to soon bring the first rainy weather eastern Idaho has received in several weeks.
So much rain could fall on the region that the National Weather Service has issued a flash flood watch for numerous local towns and cities, saying the remnants of the hurricane could cause “a very dangerous situation” in those areas.
The flash flood watch is in effect from Tuesday afternoon through Tuesday night in Inkom, McCammon, Arimo, Downey, Swanlake, Lava Hot Springs, Malad, Preston, Weston, Dayton, Thatcher, St. Charles, Montpelier, Georgetown, Paris, Grace, Bancroft, Soda Springs, Henry, Bone, Wayan, Palisades and Swan Valley. All of those areas could receive up to an inch of rain Tuesday afternoon through Tuesday night as the remnants of Hurricane Rosa barrel through eastern Idaho.
The weather service said the widespread rainfall could cause streams to overflow their banks Tuesday afternoon through Tuesday night in the areas under the flash flood watch and “rapid runoff on steep terrain is possible.”
The weather service added, “Hunters and campers venturing into the back country should be prepared for very wet and cold conditions. Footing on steep terrain may become difficult.”
All of eastern Idaho, including the areas not under the flash flood watch, could receive rain this week starting on Monday night and continuing through next Sunday due to the remnants of the hurricane.
Thunderstorms are also possible in eastern Idaho this week.
Most of Utah and much of Nevada are under flash flood watches because of Hurricane Rosa as well.
As of Sunday afternoon the hurricane was hitting northern Mexico.