Flash Flood Watch
Issued by NWS Pocatello, ID

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WGUS65 KPIH 222026

Flood Watch
National Weather Service Pocatello ID
226 PM MDT Thu Mar 22 2018

...Significant snowmelt expected through Thursday...

.A strong Pacific storm is expected to bring significant
precipitation along with very warm temperatures through tonight.
Snow levels will gradually rise to 8,500 for this afternoon, then
fall overnight behind the passing cold front. Heavy rainfall of
half to near 1.00 inch is expected below 8,500 feet. The
combination of very warm temperatures and heavy rain will lead to
flooding potential in low lying areas throughout southeast Idaho.
Increased flow on local rivers may not arrive until late tonight
or Friday.

Sawtooth Mountains-Upper Snake Highlands-South Central Highlands-
Caribou Highlands-Wasatch Mountains/Idaho Portion-
Big and Little Wood River Region-Lost River/Pahsimeroi-
Including the cities of Stanley, Clayton, St. Anthony, Ashton,
Island Park, Driggs, Victor, Malad City, Oakley, Rockland, Henry,
Soda Springs, Downey, Lava Hot Springs, Montpelier, Hailey,
Ketchum, Bellevue, Arco, Challis, and Mackay
226 PM MDT Thu Mar 22 2018


The Flood Watch continues for

* Portions of central Idaho, eastern Idaho, and southeast Idaho,
  including the following areas, in central Idaho, Big and
  Little Wood River Region, Lost River/Pahsimeroi, and Sawtooth
  Mountains. In eastern Idaho, Upper Snake Highlands. In
  southeast Idaho, Caribou Highlands, South Central Highlands,
  and Wasatch Mountains/Idaho Portion.

* Through late tonight

* Significant rainfall and snowmelt expected.

* Warm temperatures and moderate rainfall through tonight will
  lead to excessive runoff. The potential continues for low-lying
  areas to flood. Small creeks and streams may overrun banks, and
  running water may impact roads, especially in back country areas.


A Flood Watch means there is a potential for flooding based on
current forecasts.

You 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.



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