Snow was a factor in a collision in Kane County that caused an injury.
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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 SLC wrote it up.
Snow was a factor in a collision in Kane County that caused an injury.
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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Feb 13, 3:45 PM MST, 0 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 345 PM MST Tue Feb 13 2024 .SYNOPSIS...Several disturbances, generally weak, will cross through the region through Friday, bringing periods of valley rain and mountain snow, primarily for the northern Utah mountains. After a brief break Saturday, an active and moist pattern redevelops Sunday on into next week. && .SHORT TERM (Through 12Z/5AM Thursday)...Forecast region remains within zonal flow regime this afternoon, with mid/upper level moisture advecting through and yielding some cloud cover accordingly. Despite this mostly opaque cloud cover, temperatures across the forecast region largely remain near to slightly above normal. Moving overnight into early Wednesday, a quick and fairly weak shortwave brushes through the northern periphery of the forecast region. Along with marginal slug of moisture, this feature will help push a meager baroclinic zone through northern Utah (H7 temps around -4C to -6C falling into roughly the -7C to -9C range). Precipitation chances increase across the northern mountains as early as late this evening, with lower elevation precipitation seemingly largely confined near the aforementioned baroclinic zone. CAM guidance continues to show a fairly large spread for mountain water amounts, with the some sources such as the HRRR showing as little as around 0.05" to 0.10" of liquid, and some such as the NAMNest exceeding 1.00" in spots. Think the reality will end up being on the more meager side given that the system as a whole is pretty unimpressive, so current forecast reflects a general 0.10" to 0.30" for the northern mountains. Some locally higher amounts will be possible, with most CAM members highlighting the Provo area mountains as the most likely place to see some of those high numbers. With the current snow levels, generally expecting a rain/snow mix for the Wasatch Front valleys, with a bit more snow mixing in at higher benches. Snow levels nearer the Idaho border will be low enough to keep mostly snow, but even then anticipate any accumulations to be light. Overall, main impact looks to be some light snow accumulation on any of the more elevated routes through the northern mountains. On Wednesday, the trough begins to exit the region. Flow shifts to more of a warm air advection regime in advance of the next system (see long term discussion), with precipitation largely expected to more or less end with the exception of the far northern Utah mountains and other areas nearer the Idaho border. Despite lingering cloud cover, temperatures once again look to be somewhat on the mild side Wednesday, coming in near to slightly above climatological normal. Despite the quick break, precipitation chances begin to climb once again overnight into Thursday as the next system begins to push in. .LONG TERM (After 12Z/5AM Thursday)...A storm system ejecting across the PacNW region will move across the forecast area through the day on Thursday, bringing a round of mixed valley precipitation and mountain snowfall across the northern two-thirds of the forecast area. An active weather pattern will persist through at least Friday evening as a trailing wave moves across the norther portions of Utah and southwest Wyoming which will help to maintain mountain snowfall and colder valley temperatures. Numerical weather models have made a notable upward trend in precipitation forecasts for the higher terrain of northern Utah through this active period, with guidance being well in support of snow water amounts ranging from 0.75 to 1.25 inches and snowfall amounts around 6 to 12 inches through Friday evening. For valley areas expected precipitation amounts range from ~0.05-0.1" in the Sanpete Valley, 0.1-0.25" along the Wasatch Front, and 0.25-0.4" for the Wasatch Back and Cache Valley. A large majority of this precipitation will occur through the first, more significant, wave on Thursday into Friday, with generally little additional accumulations through Friday. That said, portions of the central and northern Wasatch will still see 1 to 3 inches of snowfall contributed from the Friday wave. Bottom line, mountain impacts will be greater the farther north you go in the forecast area, with the highest amounts of snow forecast for the Bear River range and the upper Cottonwood Canyons. Valley precipitation type, particularly in the Cache Valley are a bit more uncertain. By the time of precipitation onset in northern Utah, which will occur during the mid-morning hours, overhead temperatures will be too warm for valley snowfall. By the time temperatures become cold enough for valley snow, a bulk of the support for heavier precipitation will come to an end, allowing things to transition to mountain focused precipitation. That said, higher precipitation rates with overhead temperatures that are borderline for valley snowfall may allow for precipitation to rapidly transition to snowfall. As it stands, NBM shows a low (10% or less) probability of seeing more than 1 inch of snowfall in the Cache Valley and northern Wasatch Front, but these smaller scale occurrences can often become over smoothed by guidance. After these two consecutive waves later in the week, ridging will reestablish temporarily on Saturday which will help to bring mostly dry conditions. Shortly thereafter, an active pattern will resume its barrage on the eastern Great Basin region. Model guidance is showing generally high confidence in active weather remaining in place through early next week, with a series of Pacific storm systems anticipated to move through Utah and southwest Wyoming. As of the 12Z model runs on February 13, guidance shows trends that would favor valley rain and mountain snowfall. There is uncertainty in how quickly this series of systems evolves, which will also influence timing of precipitation, intensity, and the areal extent... so continue to monitor upcoming forecasts. && .AVIATION...KSLC...VFR conditions will be maintained over the KSLC terminal through the remainder of the evening hours. Northwest winds will prevail through around 03-04Z, becoming a light southerly flow thereafter. Increasing cloud cover will spread over the terminal through the overnight hours, with vicinity shower activity increasing around 05Z. CIGs will remain above 6kft AGL through at least 06Z, but will likely begin to obscure local terrain through the remainder of the night. .REST OF UTAH AND SOUTHWEST WYOMING...VFR conditions are expected across the forecast area with increasing cloud cover through the evening and overnight hours. An area of precipitation is expected to spread across the northern two-thirds of the forecast area through the overnight hours, with the biggest impacts expected to be tied to the mountainous terrain. Obscuration of local topography is expected across the northern half of Utah from about 06Z through 22Z. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && SHORT TERM...Warthen LONG TERM...Webber AVIATION...Webber For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity
The national radar mosaic for the moment the first event began.
1 winter weather. Local standard time, as filed.
Shortly before 4 p.m., a UDOT Traffic social media post indicated that U.S. 89 in Kane County was closed in both directions at milepost 70, about five miles north of Kanab, because of road conditions and a head-on collision.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2024Every state in 2024This day in weather historyWarnings in Utah, February 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: 1163303.