Severe thunderstorms brought large hail and power outages to Idaho Falls.
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.
Severe thunderstorms brought large hail and power outages to Idaho Falls.
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 12, 1:24 AM MST, 8 hours 26 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 224 AM MDT Mon Jun 12 2017 .DISCUSSION... A strong low pressure system continues to move into the region. Scattered thunderstorms continue to move northward across eastern Idaho during the predawn Monday morning hours. We may see a break in the convection for a few hours this morning, but expect storms to redevelop by afternoon across eastern Idaho. By afternoon, showers and thunderstorms will become more widespread as they move into the upper Snake Plain and central Idaho mountains. Scattered showers and thunderstorms will remain possible across the Magic Valley, lower Snake Plain and southern highlands this afternoon and this evening. Some hail and gusty winds will remain possible near thunderstorms today. A large area of wrap around rain and high elevation snow will move into the central Idaho mountains from the north this evening. This area of precipitation will continue east and overspread most of the area by Tuesday morning as the low tracks through east Idaho. The area of widespread precipiation will gradually move west to east across the region on Tuesday and should end by Wednesday morning. We are expecting some light snow from this system starting tonight as snow levels fall to around 7500 feet across the region. Potentially, could see up to 6 inches on some peaks. Will probably not significantly affect any roads, such as Galena Summit, as road surface temperatures are probably too warm. Therefore no winter weather advisories will be issued at this time. Expecting some strong gusty winds to develop behind a cold front that will be accompanying the low. This front will arrive late tonight and early Tuesday morning. Could need a wind advisory for portions of the region. Wednesday should be relatively quiet across the region as high pressure settles over the area. A series of weak systems will arrive Thursday. These systems will mainly pass through Montana, but could produce a few showers at times through the weekend. Best chances for Showers will be roughly north of a line from Shoshone to Blackfoot. Valle && .AVIATION...Stratus and fog plaguing the three western airdromes: KBYI, KPIH, and KSUN, closing that last one. However, am expecting a wind shift right around airport opening time, so it may have no impact. Drainage winds seem to be keeping KIDA free of the stratus, but KDIJ may get some showers and so some marginal VFR due to showers moving along the ID-WY border. A strong south wind should develop this afternoon ahead of a strong upper level low that will bring snow down to 7000 ft elevation early Tuesday morning. Wind will shift on Tuesday to westerly and increase to the 20 to 25kt range with higher gusts. && .FIRE WEATHER...A fairly intense low will slide over southern Idaho tonight and Tuesday morning, bringing snow down to around 7000 ft elevation, but enough cloud cover where the cold air in the upper levels will not trigger thunderstorms on Tuesday; thunderstorms are actually more likely today. The low will exit Tuesday afternoon and evening, and by early Wednesday morning the Pacific Northwest will be under a dry westerly flow with no significant threat of precipitation until Thursday night/Friday/Friday night, when a slight chance exists along the ID-MT border. Conditions return to nearly dry for the weekend. Humidity is staying fairly high for a while due to the Monday night/Tuesday storm, but do expect a return to more normal humidity levels by Thursday. Possibly very windy conditions on Tuesday morning with decreasing wind by afternoon due to the low. Local study indicates lots of sea level pressure gradient and 700mb wind, but little upper level support at 500mb or even 250mb. Also, most of the instability happens today, not Tuesday, so very little overturning in the atmosphere. However, the 10mb mslp gradient Tuesday morning and early afternoon is significant and cannot be totally ignored. The westerly flow that develops by Wednesday will also mean breezy afternoons. Messick && .HYDROLOGY...Several rivers remain in flood. The cooler temperatures have helped to slow the snowmelt and river levels are falling. However, we continue to expect quite a bit of moisture through Tuesday. Potentially could see 0.50 to 1 inch of rain with some isolated spots up towards 1.25 inches. This will affect many rivers, so look for streams that are in flood to likely remain in flood for a couple more days, and we could see other streams, especially across the upper Snake highlands go into flood for a brief time. Valle && .PIH WATCHES/WARNINGS/ADVISORIES... Flood Watch from 6 AM MDT this morning through late Tuesday night for IDZ019. &&
Special Weather Statement
National Weather Service Pocatello ID
1004 AM MDT MON JUN 12 2017
IDZ019-032-121630-
Lost River/Pashimeroi ID-Upper Snake Highlands ID-
1004 AM MDT MON JUN 12 2017
...SPECIAL WEATHER STATEMENT...
At 1003 AM MDT, Doppler radar was tracking a strong thunderstorm 17
miles northwest of Northwest Inl, or 28 miles northwest of Terreton,
moving north at 35 mph.
Half inch hail will be possible with this storm.
Locations impacted include...
Lone Pine.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also possible with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4402 11275 4398 11299 4423 11309 4423 11281
4441 11282 4442 11284 4445 11282
TIME...MOT...LOC 1603Z 168DEG 29KT 4408 11290
JKEYESPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1035 AM MDT MON JUN 12 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1032 AM HAIL TERRETON 43.83N 112.43W
06/12/2017 E0.50 INCH JEFFERSON ID TRAINED SPOTTER
DIME SIZE HAIL REPORTED IN TERRETON.
&&
KSMITHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1047 AM MDT MON JUN 12 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1035 AM HAIL MONTEVIEW 43.93N 112.53W
06/12/2017 E0.50 INCH JEFFERSON ID PUBLIC
PHOTO OF DIME SIZE HAIL RECEIVED FROM THE PUBLIC.
&&
KSMITHThe Pocatello radar (KSFX), 67 km away, was scanning. The volume nearest the first event began at 16:50 UTC.
1 hail. Local standard time, as filed.
Hail 1.25 inches was recorded in Idaho Falls and 3,000 Idaho Falls Power customers lost power due to a transformer failure. The outage was areas south of 17th street.
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: 708803.