Several wind gusts over 50 knots recorded in southeast Idaho.
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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.
Several wind gusts over 50 knots recorded in southeast Idaho.
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 27, 12:50 PM MST, 1 hour 12 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 150 PM MDT Sat Jul 27 2024 .SHORT TERM...Tonight through Sunday Night. Early afternoon satellite imagery shows an approaching H5 shortwave trough currently situated over NRN Nevada with radar showing isolated showers and embedded thunderstorms continuing across extreme SE Idaho. As this trough moves into SRN Idaho later today tapping into some monsoon moisture from the Great Basin, scattered thunderstorms remain favored to develop with the HREF model probability of thunder showing a 30-80% chance of thunder across our entire region. The convective environment today will support 500-800 J/kg of SBCAPE, 1000-1500 J/kg of DCAPE, 20-35 kts of 0-6 km shear, and 7-9 degree/km 700-500 mb lapse rates. This environment will remain conducive for stronger storms that will be capable of producing wind gusts to 40-60 mph, heavy rain, and small hail. Given PWATs in that 0.50-0.80" range, we will also see a mix of wet and dry storms given a drier airmass in place at the surface. Activity will decrease after sunset tonight but cannot rule out continued isolated showers and storms overnight in the mountains, primarily in the CNTRL Mountains. Highs today will be in the 70s and 80s, seasonably cool for late July. For Sunday, that aforementioned H5 shortwave trough will continue its progression NE into Montana and Wyoming supporting another round of isolated to scattered showers and thunderstorms. Best chances for this activity will shift to being across the Upper Snake Plain and along the Montana and Wyoming border regions as conditions remain predominantly dry elsewhere. Highs on Sunday will remain very similar to Saturday in the 70s and 80s. Wildfire smoke will continue to impact air quality and visibility at times through the weekend with the HRRR smoke and satellite imagery this afternoon showing improving conditions across ERN Idaho. This improvement looks to be short-lived however as more wildfire smoke builds back in tonight into Sunday associated with several large wildfires to our west. MacKay .LONG TERM...Monday through next Saturday. Expect breezy southwest flow aloft to continue on Monday bringing afternoon gusty conditions. No showers and thunderstorms are expected on Monday. Temperatures look to rise slightly above normal on Monday. Tuesday into Wednesday models show a weak wave move through the area bringing breezy winds and mostly isolated thunderstorms. Temperatures look to drop down to normal to slightly below normal on Tuesday and Wednesday. Late Wednesday into Saturday high pressure builds back into the area. Expect a heat wave with dry and hot conditions Thursday, Friday, and Saturday. There is high confidence of heat with model clusters lining up well. Plus, the ECMWF model Extreme Forecast Index (EFI) has values of 0.7 to 0.8 showing moderate to high confidence of heat returning as well. Temperatures will gradually get warmer each day and will run 6 to 10 degrees above normal with lower elevations in the mid to upper 90s. A few areas may hit 100 degrees on Friday with more lower elevations likely hitting 100 degrees by Saturday. Wyatt && .AVIATION...For the 18Z TAFS through 18Z Sunday. This afternoon expect thunderstorm impacts for all sites with a trough moving through southwest flow aloft. Gusty outflow winds of around up to 35 to 50 mph are likely with thunderstorm passage by 2 pm for Burley and 3 to 4 pm for PIH and 4 to 5 pm for IDA and 6 to 7 pm for KDIJ. Gusts up to 60 mph are possible, especially for KBYI. Thunderstorms on station will likely bring brief MVFR/VFR conditions. Visibility will be slightly degraded for KBYI and KSUN early this afternoon and will improve with showers and thunderstorms by mid to late afternoon. The HRRR smoke model shows some light visibility degradation from smoke for all TAFS sites later tonight into early morning as winds drop off. Not currently expected to have MVFR visibility at this point but could occur, especially for KSUN and KPIH. Wyatt && .FIRE WEATHER... Another system rolls in from the Pacific today with RED FLAG WARNING in effect until 2200 for all fire weather zones outside of FWZ 422 for a mix of scattered wet and dry thunderstorms. Stronger storms will support gusty outflow winds in that 40-60 mph range, heavy rain, and frequent lightning but given PWATs around that 0.50-0.80" range, the potential for isolated dry thunderstorms will also exist. Following this systems exit to our NE on Sunday, isolated to scattered showers and storms will continue Saturday night into Sunday as best chances shift north and east. Conditions remain marginal for a scattered thunderstorms RFW tomorrow so have held off for the time being. Synoptic winds this weekend will be breezy each afternoon outside of convection with gusts to around 20-35 mph and minimum RHs in the teens and 20s across our lower elevations. High pressure begins to build into early next week ahead of a H5 trough passing over the NRN Rockies on Tuesday. As a result, conditions will remain dry on Monday with isolated showers and thunderstorms in the CNTRL Mountains and along the Montana border region. Outside of isolated thunderstorms, the primary focus will be on elevated winds peaking each afternoon which will support near critical to critical fire weather conditions given RHs in the teens and 20s which may support addition RFWs. Following the exit of that trough for Wednesday, a H5 ridge axis will shift overhead and lead to a warming trend through next weekend as conditions return to being very dry. MacKay && .AIR QUALITY... Air Quality has improved slightly this afternoon due to instability helping bring showers and thunderstorms. Air quality will continue to improve this afternoon as showers and thunderstorms continue. Air Quality Alerts are in effect for much of eastern Idaho, relayed from our partners at the Idaho Department of Environmental Quality (ID DEQ). Any air quality improvements will likely only be temporary, however, as there is no shortage of upstream smoke production from the wildfires in OR, ID, and CA. Expect continued degraded air quality on Sunday with less confidence heading into early next week. TAX/Wyatt && .PIH WATCHES/WARNINGS/ADVISORIES... Red Flag Warning until 10 PM MDT this evening for IDZ410-411-413- 425-427-475-476. &&
Special Weather Statement
National Weather Service Pocatello ID
237 PM MDT Sat Jul 27 2024
IDZ055>057-272130-
Eastern Magic Valley ID-Raft River Region ID-
Southern Hills/Albion Mountains ID-
237 PM MDT Sat Jul 27 2024
...STRONG THUNDERSTORMS WILL IMPACT SOUTHERN BLAINE...WESTERN
POWER...CENTRAL CASSIA AND SOUTHEASTERN MINIDOKA COUNTIES THROUGH 330
PM MDT...
At 237 PM MDT, Doppler radar was tracking a cluster of strong
thunderstorms 7 miles south of Lake Walcott, moving northeast at 20
mph.
HAZARD...Wind gusts in excess of 45 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to outdoor objects is
possible.
Locations impacted include...
Burley, Rupert, Heyburn, Oakley Reservoir, Lake Walcott, Oakley,
Declo, Albion, Minidoka, Cold Water Rest Area, Acequia, Yale Rest
Area, Mt Harrison, Idahome, and Interstate 84 And 86 Junction.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4213 11373 4211 11410 4231 11421 4282 11340
4261 11305
TIME...MOT...LOC 2037Z 237DEG 19KT 4256 11341
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...45 MPH
CroppPreliminary Local Storm Report
National Weather Service Pocatello ID
302 PM MDT Sat Jul 27 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0224 PM Tstm Wnd Gst 1 SSW Heyburn 42.55N 113.77W
07/27/2024 M47 MPH Cassia ID ASOS
ASOS station KBYI Burley Municipal Airport.
&&
CMThe Pocatello radar (KSFX), 161 km away, was scanning. The volume nearest the first event began at 20:59 UTC.
4 thunderstorm wind. Local standard time, as filed.
A 77 mph thunderstorm outflow wind measured at the Cotton Ridge mesonet site.
The Sand Dunes mesonet site recorded a 62 mph wind gust.
Mesonet station Bartlett Lake measured a 60 mph wind gust.
Sheep Creek Hills mesonet site recorded a 62 mph wind gust.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2024Every state in 2024This day in weather historyWarnings in Idaho, July 2024
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: 1206956, 1206957, 1206954, 1206955.