Weather Alerts For Arco, ID
Wind Advisory
-# HEADLINE -------------------- WIND ADVISORY IN EFFECT FROM NOON TO 10 PM MDT WEDNESDAY # DETAILS -------------------- WHAT Southwest winds 25 to 35 mph with gusts up to 55 mph expected. WHERE Challis/Pahsimeroi Valleys, Lost River Range, Lost River Valley, Wood River Foothills, Beaverhead - Lemhi Highlands, Eastern Magic Valley, Shoshone/Lava Beds, Arco/Mud Lake Desert, Lower Snake River Plain, Raft River Region, Southern Hills/Albion Mountains, and Upper Snake River Plain. WHEN From noon to 10 PM MDT Wednesday. IMPACTS Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Strong winds and rough waves on area lakes will create hazardous conditions for small craft. ISSUED AT Monday, May 11, 2026 at 11:39 PM MDT ISSUED BY National Weather Service Pocatello ID HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft. # AREAS AFFECTED -------------------- Lemhi Highlands, Lower Snake River Plain, Arco/Mud Lake Desert, Beaverhead , Challis/Pahsimeroi Valleys, Eastern Magic Valley, Lost River Range, Lost River Valley, Raft River Region, Shoshone/Lava Beds, Southern Hills/Albion Mountains, Upper Snake River Plain, Wood River Foothills Including the cities of American Falls, Hailey, Challis, Carey, Richfield, Dubois, Oakley, INL, Fort Hall, St. Anthony, Borah Peak, Bellevue, Heyburn, Craters of the Moon NM, Malta, Holbrook, Small, Edie School, Rexburg, Mud Lake, Blackfoot, Mackay, Albion, Spencer, Almo, Chilly, Shelley, Rupert, Picabo, Howe, Shoshone, Idaho Falls, Burley, Pocatello, Rockland, and Arco
Pollen Alert
-Pollen Index: 9.7 Pollen Level: high Predominant Pollen: Ash, Poplar/Aspen/Cottonwood and Maple. Pollen concentrations for Wednesday will be rising and extend further into the very high range. Since the weather has a major influence on pollen dispersal, this increase is due in part to windy conditions.
