Flash Flood Watch
Issued by NWS Pocatello, ID

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WGUS65 KPIH 301736

Flood Watch
National Weather Service Pocatello ID
1136 AM MDT Thu Mar 30 2017

Eastern Magic Valley-Sawtooth Mountains-Upper Snake Highlands-
South Central Highlands-Caribou Highlands-
Cache Valley/Idaho Portion-Wasatch Mountains/Idaho Portion-
Big and Little Wood River Region-Lost River/Pahsimeroi-
Including the cities of Burley, Rupert, Heyburn, Stanley,
Clayton, St. Anthony, Ashton, Island Park, Driggs, Victor,
Malad City, Oakley, Rockland, Henry, Soda Springs, Downey,
Lava Hot Springs, Preston, Montpelier, Hailey, Ketchum, Bellevue,
Arco, Challis, and Mackay
1136 AM MDT Thu Mar 30 2017


The Flood Watch continues for

* Portions of central Idaho, eastern Idaho, south central 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 south central Idaho, Eastern Magic
  Valley. In southeast Idaho, Cache Valley/Idaho Portion,
  Caribou Highlands, South Central Highlands, and Wasatch
  Mountains/Idaho Portion.

* Through Friday afternoon

* Excessive snowmelt along with rainfall.

* Above freezing temperatures and moderate to heavy rainfall today
  will exacerbate snowmelt across the watch area resulting in the
  potential for flooding in lower elevations through Friday.

* Water continued to flow over the Magic Dam spillway with
  downstream flows on the Big Wood River across Lincoln County
  expected to reach upwards of 5000 CFS around 6 PM MDT Thursday
  evening. At 5300 CFS, floodwaters spread downstream from the
  reservoir along the Big Wood River reaching within one foot of Highway
  75. The flooding is expected to be similar to the event that
  occurred in 2006.


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

Individuals living near the Big Wood River downstream of the
Magic Dam should be alert to possible flooding.

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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