Idaho Highway 75 closed near milepost 155 and Horse Creek Road. Partial closure with road reduced to one lane.
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The episode as NWS PIH wrote it up.
Idaho Highway 75 closed near milepost 155 and Horse Creek Road. Partial closure with road reduced to one lane.
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 Jan 3, 1:58 PM MST, 4 hours 32 minutes earlier.
Area Forecast Discussion National Weather Service Pocatello ID 158 PM MST Fri Jan 3 2025 .SHORT TERM...Today through Saturday Night. The warm front from this morning has continued its trek northward and taken most of the moisture with it, but don't worry, the cold front with this system will come barreling in tonight. This will bring some more precipitation with it, cooler temperatures, and some wind, too. At the start, temperatures will still be warm enough to support a brief period of rain in the eastern Magic Valley and lower Snake River Plain. A short burst of snowfall in the eastern Magic Valley will lead to light accumulations, and even accumulations in the Snake Plain look relatively light. However, a convergence band mid morning from Idaho Falls to the Pocatello area could bring some additional snow accumulation. The most likely snow totals in this area will fall between 1 to 2 inches with the HREF 90th percentile totals ranging from 2 to 3 inches. Overall, there is about a 10 to 20 percent chance of at least 3 inches of snow between Pocatello and Idaho Falls. Elsewhere, most of our mid elevation areas will see 2 to 4 inches of snow with the HREF 90th percentiles ranging from 3 to 5 inches. The exception to these totals will be in the Bear River Range where we already have a Winter Weather Advisory out for this evening and where totals will range from 8 to 12 inches of snow with closer to 14 inches above pass level. Given these totals and forecast winds, have decided to keep headlines as they are with just the one Winter Weather Advisory for the Bear River Range. Wind gusts along and just behind the cold front will be strongest in parts of the South Hills and eastern Magic Valley with gusts of 35 to 40 mph and isolated gusts around 45 mph. We will be near Wind Advisory criteria, but coverage at this point doesn't look quite widespread enough to issue. Either way, it will be breezy to windy at times and the wind and any falling snow will make for difficult travel at times. Temperatures will generally be running 5 to 10 degrees cooler with highs in the low to mid 30s for most. Light snow will linger into Saturday night, but totals then will be much lighter. AMM .LONG TERM...Sunday through Friday. Little has changed with the extended period this forecast cycle. Secondary shortwave follows through Sunday and Monday for additional light snows mainly across the southern and eastern highlands. Areas within the interstate corridor up to receiving a small amount of snow through this time period as well. Sharp ridge begins building along the Pacific coast during this time frame, which folds over East Idaho during the day Wednesday. Another shortwave tops the ridge and drops across the northern Rockies Wednesday, skimming pat the northeast corner. NBM carries just enough moisture to produce light pops over the eastern highlands Wednesday, but very little QPF is generated, so expectations for much additional snowfall are minimal. Once this trough axis passes through the state, ridge to the west allowed to amplify further, leading to stronger north flow directly across Idaho. For the remainder of the period, ensemble clusters lean toward developing a new rex block resulting from closing off the Sunday/Monday feature across the deep southwest. The result could be several days of cold and dry conditions headed into next weekend. NBM spread shows max temps most lower elevation areas could struggle around the freezing mark. Deterministic GFS and ECMWF are much lower so this could be the impact to keep in mind headed through the week. DMH && .AVIATION...18Z Friday to 18Z Saturday. Our weather remains relatively quiet behind the warm front that lifted north through the area this morning and conditions are predominantly VFR through the afternoon and early evening. That will change as our next cold front swings through the area later this evening/tonight and brings another round of rain and snow with it. Look for drops in both CIGs and VIS to at least MVFR conditions if not IFR once precip switches over to mostly snow at BYI, PIH, and IDA. Expect all snow at SUN and DIJ with this system. Wind will also be an issue with/behind the cold front with the strongest gusts Saturday morning of 30 to 40 kts at BYI and PIH. Gusts will be closer to 25 kts at IDA and around 15 kts at SUN and DIJ. We will be watching for a convergence band of snow around IDA to PIH between 15- 19Z Saturday, too. While some light snow will linger into late Saturday, look for some improvement as we head into Sunday. AMM && .PIH WATCHES/WARNINGS/ADVISORIES... Winter Weather Advisory from 5 AM to 9 PM MST Saturday for IDZ060. &&
Preliminary Local Storm Report
National Weather Service Pocatello ID
320 PM MST Fri Jan 3 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 AM Snow 2 NNW Hailey 43.54N 114.32W
01/03/2025 M3.5 Inch Blaine ID Trained Spotter
New snow overnight.
&&The national radar mosaic for the moment the first event began.
1 avalanche. Local standard time, as filed.
Idaho Highway 75 closed near milepost 155 and Horse Creek Road. Partial closure with highway reduced to one lane.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2025Every state in 2025This day in weather historyWarnings in Idaho, January 2025
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: 1232709.