Weather Alerts for Island Park

Issued by the National Weather Service

Flood Watch  FLOOD WATCH   Flood Watch

Areas Affected:
Lost River, Pashimeroi - Sawtooth Mountains - Upper Snake Highlands
Effective: Mon 5:05 am Updated: Mon 6:29 pm Urgency: Future
Expires: Tue 12:00 am Severity:  Moderate  Certainty: Possible

...Periods of Heavy Rain through this Evening across the Central
Idaho Mountains and Upper snake Highlands...
.1 to 2 inches of Rain with locally higher amounts has lead to
rises on many waterways across the Flood watch area, with some
flooding reports received across the area on Sunday. Rainfall
amounts are not expected to be as high through this Evening
compared to Sunday, with generally 0.50 inches or less expected.
However, locally higher amounts are possible. Continued rises on
the Big Wood River and Antelope Creek are forecast, with the Big
Wood River at Hailey forecast to crest early Tuesday. Rises are
also forecast along the Henry`s Fork and Teton Rivers. Some
flooding is possible on the Big Lost River downstream of Mackay
Reservoir depending on the nature of any releases. Ponding of
water on Roads will be possible in heavier Showers and
Thunderstorms, with local flash flooding possible in urban areas.
The Flood Watch continues for
* Portions of central and eastern Idaho, including the following
areas, in central Idaho, Lost River/Pahsimeroi and Sawtooth
Mountains and adjacent valleys. In eastern Idaho, Upper Snake
* Through this evening
* Additional rainfall of up to one half inch is expected through
this evening, with locally higher amounts possible.
* Embedded thunderstorms or multiple storms crossing the same
location could bring heavy rates of rainfall in localized

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.