Severe thunderstorm winds downed power lines in Pocatello on Jefferson Avenue around 745. Idaho Power reported 2,000 customers in the Pocatello area.
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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.
Severe thunderstorm winds downed power lines in Pocatello on Jefferson Avenue around 745. Idaho Power reported 2,000 customers in the Pocatello area. The Pocatello Regional Airport reported a wind gust of 61 mph.
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 Jun 26, 1:20 PM MST, 4 hours 51 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 220 PM MDT Mon Jun 26 2017 .SHORT TERM...Tonight through Wednesday. Upper trough pushing over forecast area. Moisture working northeast toward the region. Favorable upper jet dynamics and instability in favor for development of convection starting this afternoon, shifting east ahead of surface cold front. HRRR still showing gusts near severe limits this evening as line of storms works northeast from south of BYI through the Snake Plain. DCAPE values support stronger convective gusts as well. PW values at or above 0.75 where convection expected to develop/move so wetting rains likely out of the storms. Initial shortwave shifts east through the night, and models all still paint weak convection lingering across the region past sundown, mainly higher elevation areas. Have kept precip going overnight. Second shortwave shifts across the region Tuesday, and could see another round of strong storms particularly in NE quadrant of fcst area. Breezier through the day as sfc gradient tightens behind tonight's front. Upper trough axis slowly sags SE, with one more shortwave associated with base of trough passing through on Wednesday. Yes, one more round of convection, expected to be weaker, and mainly concentrated in areas along the WY border. DMH .LONG TERM...Wednesday night through Monday. Upper trough pushes into the Plains in the latter portions of the week, with northwest flow over ID and dry conditions. Next Pacific trough slips inland Saturday, and both GFS/ECMWF settling on increased chances for convection across the area. Have nudged PoP upward slightly for Saturday. This trough is fairly progressive, so models project another return to dry northwest flow Sunday and Monday. DMH && .AVIATION...Thunderstorms are expected to develop and move southwest to northeast across the area late this afternoon and tonight as an upper-level trough and attendant cold front slide across the area. Best thunderstorm chances through this evening appear to be at KBYI and KSUN...with lesser coverage expected near KPIH...KIDA...and KDIJ. Better chances will eventually shift east to KDIJ late tonight and tomorrow. Strong gusty winds will be possible with the storms...along with brief MVFR or lower conditions. Outside of any showers/storms...VFR conditions are anticipated. West/southwest winds will increase Tuesday morning behind the front with strongest winds expected at KPIH/KIDA/KBYI. KB && .FIRE WEATHER...Showers and thunderstorms will continue to develop this afternoon and evening ahead of an upper-level trough and cold front...and make their way southwest to northeast across the area late this afternoon through tonight. Some of the thunderstorms this afternoon and evening may produce strong gusty winds and little rainfall. The Central Mountains and South Central Highlands are favored to see the greater thunderstorm coverage through this evening. Better chances will become focused over the Central Mountains and Upper Snake Highlands late tonight...with the Upper Snake Highlands seeing the higher chances on Tuesday. Behind the cold front passage tonight...west/southwest winds will increase on Tuesday with the strongest winds expected in the Snake Plain and Eastern Magic Valley where gusts to around 35 mph will be common. Temperatures on Tuesday will cool 10-15 degrees from today in wake of the front...resulting in higher RH values (minimum RH values 20 percent or higher). Thus no critical fire weather conditions are anticipated despite the gusty winds. For the remainder of the week...near normal temperatures can be expected along with mainly dry conditions aside from some lingering showers and storms in the Upper Snake Highlands on Wednesday. KB && .PIH WATCHES/WARNINGS/ADVISORIES... None. &&
Special Weather Statement
National Weather Service Pocatello ID
447 PM MDT MON JUN 26 2017
IDZ017-022-262315-
South Central Highlands ID-Eastern Magic Valley ID-
447 PM MDT MON JUN 26 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CASSIA COUNTY UNTIL
515 PM MDT...
At 445 PM MDT, Doppler radar was tracking a strong thunderstorm near
Malta. This storm was moving east to northeast at 10 mph.
Winds in excess of 40 mph will be possible with this storm. Brief
heavy rain and small hail are expected.
Locations impacted include...
Idahome.
LAT...LON 4232 11334 4241 11342 4257 11329 4252 11311
4233 11310
TIME...MOT...LOC 2245Z 240DEG 0KT 4237 11336
RSSpecial Weather Statement National Weather Service Pocatello ID 456 PM MDT MON JUN 26 2017 IDZ022-262345- South Central Highlands ID- 456 PM MDT MON JUN 26 2017 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL CASSIA COUNTY UNTIL 545 PM MDT... At 455 PM MDT, Doppler radar was tracking a strong thunderstorm near Oakley or near Oakley Reservoir, moving northeast at 5 mph. Half inch hail and wind gusts up to 50 mph will be possible with this storm. Boaters on Oakley Reservoir should move to shelter until the storm passes. Locations impacted include... Oakley Reservoir and Oakley. LAT...LON 4228 11377 4218 11394 4226 11404 4237 11390 TIME...MOT...LOC 2255Z 227DEG 5KT 4225 11397 RS
Special Weather Statement National Weather Service Pocatello ID 520 PM MDT MON JUN 26 2017 IDZ022-270000- South Central Highlands ID- 520 PM MDT MON JUN 26 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL POWER AND NORTHEASTERN CASSIA COUNTIES UNTIL 600 PM MDT... At 519 PM MDT, Doppler radar was tracking a strong thunderstorm 14 miles southwest of Rockland or 17 miles east of Malta, moving east at 15 mph. Winds in excess of 40 mph will be possible with this storm, along with brief heavy rain and small hail. This storm will remain over mainly rural areas of south central Power and northeastern Cassia Counties. LAT...LON 4241 11267 4235 11314 4241 11318 4260 11274 TIME...MOT...LOC 2319Z 252DEG 14KT 4240 11305 RS
Special Weather Statement National Weather Service Pocatello ID 530 PM MDT MON JUN 26 2017 IDZ017-021-270015- Lower Snake River Plain ID-Eastern Magic Valley ID- 530 PM MDT MON JUN 26 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BLAINE... NORTHWESTERN BANNOCK...CENTRAL POWER...NORTHEASTERN CASSIA AND SOUTHWESTERN BINGHAM COUNTIES UNTIL 615 PM MDT... At 527 PM MDT, Doppler radar was tracking a strong thunderstorm 9 miles west of Neeley, moving northeast at 25 mph. Winds in excess of 40 mph will be possible with this storm, along with small hail and brief heavy rain showers. Locations impacted include... American Falls, American Falls Reservoir, Chubbuck, Aberdeen, Springfield, Pocatello Airport and Sterling. PRECAUTIONARY/PREPAREDNESS ACTIONS... If on or near American Falls Reservoir, get out of the water and move indoors or inside a vehicle. Remember, lightning can strike out to 10 miles from the parent thunderstorm. If you can hear thunder, you are close enough to be struck by lightning. Move to safe shelter now! Do not be caught on the water in a thunderstorm. && LAT...LON 4263 11320 4271 11326 4312 11273 4292 11249 TIME...MOT...LOC 2327Z 223DEG 39KT 4278 11306 RS
Special Weather Statement National Weather Service Pocatello ID 538 PM MDT MON JUN 26 2017 IDZ017-022-270015- South Central Highlands ID-Eastern Magic Valley ID- 538 PM MDT MON JUN 26 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CASSIA AND SOUTH CENTRAL MINIDOKA COUNTIES UNTIL 615 PM MDT... At 536 PM MDT, Doppler radar was tracking a strong thunderstorm 8 miles south of Burley, moving east at 10 mph. This storm will pass through the Interstate 84 and 86 Junction about 6 PM MDT. Winds in excess of 40 mph will be possible with this storm, along with brief heavy rain and small hail. Locations impacted include... Declo, Yale Rest Area and Interstate 84 And 86 Junction. LAT...LON 4249 11334 4235 11380 4243 11389 4263 11355 TIME...MOT...LOC 2336Z 250DEG 5KT 4242 11378 RS
The Pocatello radar (KSFX), 22 km away, was scanning. The volume nearest the first event began at 01:09 UTC.
2 thunderstorm wind. Local standard time, as filed.
A 61 mph gust was recorded by the Pocatello ASOS at the Pocatello Regional Airport.
Thunderstorm winds downed a power line on Jefferson Avenue and many power outages occurred in Pocatello on the 26th. Idaho Power reported 2,000 customers without power.
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, June 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: 708804, 708805.