Several instances of flash flooding, strong winds and hail were reported.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PIH wrote it up.
Several instances of flash flooding, strong winds and hail were reported.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pocatello, ID wrote its last area forecast discussion before the first event at Jul 26, 12:23 PM MST, 4 hours 16 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 123 PM MDT Wed Jul 26 2017 .SHORT TERM...Tonight through Thursday night. Upper low over northern CA today. Mid-level dry slot working through Great Basin ahead of low into East Idaho with good clearing. Showers continue over eastern highlands early this afternoon with a few embedded thunderstorms. Air mass within clearing behind mass of showers showing signs of destabilization again, and expect another round of thunderstorms to develop this afternoon/evening across the region. Models continue to have a difficult time with placement of convection, but HRRR consistent this morning on rather widespread swath of convection redeveloping between 2 and 4pm, shifting northeast through early evening. Strongest cells in HRRR over higher terrain regions so concentrated precip chances there. Upper low opens and shifts northeast through Thursday, sliding across East Idaho during the afternoon and early evening. Better shear associated with passage of the shortwave could lead to slightly more organized convection, so have reserved highest precip chances for Thursday afternoon. As shortwave axis shifts east overnight, expect precip to drop off significantly after midnight. DMH .LONG TERM...Friday through Wednesday. Upper ridge rebounds slightly heading into the weekend with resurgence of high pressure over the Great Basin. Plenty of moisture lingers through the remainder of the week, and thus have kept some chance of convection each afternoon and evening through the period. Look for temperatures to rebound back into the 90s for lower elevation areas by Saturday, continuing into next week. DMH && .AVIATION...Monsoon moisture will continue to invade eastern Idaho through tomorrow. TAFs contain -SHRA VCTS or VCTS through this evening, with the potential of heavy rain and gusty winds over 25kts. We can't rule out small hail either. We went with VCSH overnight as instability decreases BUT it does appears the potential for showers and even thunderstorms is there overnight. More of the same tomorrow. Overall, expect VFR although with storms containing heavier rain ceilings and visibility COULD drop into MVFR. Keyes && .FIRE WEATHER...We are seeing clearing slowly from west to east today with showers and isolated/widely scattered storms continuing or redeveloping back to the west. Gusty winds and locally heavy rain (over 0.25") are possible with stronger storms. Small hail is also possible. With the next storm moving into our area later tonight and Thursday, the risk of lightning/thunderstorms will persist into tonight and obviously tomorrow. Heavy rain is still possible overnight and Thursday, with perhaps a little better chance of gusty winds or small hail tomorrow. At the moment, coverage SHOULD still remain below scattered. As mentioned over the past couple of days, advanced warning on scattered coverage and Red Flag conditions could be pretty short as we've been nowcasting (a few hours ahead of time vs 12+ hours) areas of clearing and storm development. Heading into the weekend, the models are still a bit chaotic (in other words, no major agreement) in terms of storm coverage after Saturday. We are expecting isolated Friday and Saturday as no real trigger is there plus lack of deeper moisture. The ridge tries to rebuild northward and the extent of that will determine how much moisture rotates around the center of it and where it will go. We may easily be back into the Monsoon soup early next week depending on how things pan out. Keyes && .PIH WATCHES/WARNINGS/ADVISORIES... None. &&
The Salt Lake City radar (KMTX), 104 km away, was scanning. The volume nearest the first event began at 23:40 UTC.
2 flash flood, 1 thunderstorm wind, 1 hail. Local standard time, as filed.
The Moburg Canyon mesonet site measured a 68 mph wind gust.
One inch hail fell in Preston with reports of window of car broken out on South First Street by it.
Over 1 foot of water was covering South First Street East in Preston after over a half inch of rain fell in 10 minutes.
Over an inch of rain fell in the Idaho Falls area in a two hour period causing flash flooding. In Idaho Falls water was over Buckboard Lane with several inches of water on city streets on the west side. The Yellowstone Ave underpass flooded along with some basements. Grandview Drive and Saturn Avenue flooded. A road near Russ Freeman Park was flooded. A vehicle was stuck in 2 feet of water on 17th Street. Flooding was several inches deep at the intersection of North Blvd and Shelley Street. The Idaho Falls airport set a daily precipitation record on July 26th of 1.06 inches.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2017Every state in 2017This day in weather historyWarnings in Idaho, July 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 716816, 716814, 716815, 716817.