Eclipse over Idaho: As found from the NASA interactive eclipse map, the centerline of the Moon’s shadow crosses into Idaho and the Mountain Time Zone along the Snake River, northwest of Weiser, Idaho at 11:24:57 AM Mountain Daylight Time (17:24:57 Universal Time). Totality lasts 2 minutes, 10 seconds and the path of totality is 64 miles wide at the Snake River.
Idaho Falls is the largest city along the path, where totality begins at 10:33:02 AM, and lasts for 1:47. The path of totality extends 294 miles across the state of Idaho in the span of 11 minutes, 49 seconds, at an average speed of 1856 miles per hour, or 2.44 times the speed of sound.
Along the centerline, the Moon’s shadow exits the state at Fox Creek, Idaho at 11:36:46 AM MDT (17:36:46 UT). At the eastern border of Idaho, the centerline duration of totality is 2 minutes, 19 seconds and the path of totality is 66 miles wide.
NOTE: Duration of totality is longest along the centerline. Duration of totality approaches ZERO near the edges of the path of totality. Please consult the NASA interactive eclipse map for precise times and durations of totality at each specific location in the state, along with locals times for the beginning and ending of the partial eclipse phases.
Lodging: As with all locations along the path, hotel reservations will fill up well in advance. Plan instead to tent camp or rent an RV. While there are many commercial and public campgrounds, primitive camping is inexpensive in the National Parks and free in the National Forests.
Traffic Concerns: In the event of any last-minute, impromptu eclipse day trippers, I-15 might experience some heavy traffic from Salt Lake City in the south. There might also be traffic from western Montana and the larger cities in Alberta and Saskatchewan. Being in a less-populous part of the USA, traffic should not be a great concern.
Weather: According to the Eclipsophile site, based on meteorological averages, the chances for clear skies on Eclipse Day in Idaho are excellent.
Planning Your Idaho Vacation: Please read the resources on our Be Prepared! page for finding opportunities for overnight lodging at your Idaho eclipse viewing destination. Idaho is a beautiful mountain state, and the path of totality passes over several national forests, allowing ample space for hosting prepared eclipse chasers. See more at the Visit Idaho page for more information on planning your Idaho eclipse vacation!
Organized Eclipse Events in Idaho:
Teton Valley Solar Eclipse – Teton Valley, Idaho’s website for everything total solar eclipse, August 21st, 2017. Teton Valley is right on the “line of totality” and is considered to be one of the best places to view the eclipse in the United States.
This list is a work in progress! Please contact us if you know of any other Idaho eclipse events!