A line of showers and thunderstorms moved into northern Utah during the evening hours, resulting in isolated instances of strong wind gusts before dissipating.
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The episode as NWS SLC wrote it up.
A line of showers and thunderstorms moved into northern Utah during the evening hours, resulting in isolated instances of strong wind gusts before dissipating.
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 Sep 5, 2:45 PM MST, 44 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 345 PM MDT Tue Sep 5 2023 .SYNOPSIS...After today, mostly dry and benign weather is expected with temperatures returning to near normal levels. By Sunday into the following week, some lower end precipitation chances return. && .SHORT TERM (Through 12Z/6AM Thursday)...A compact mid level shortwave, evident via GOES-W water vapor imagery, will continue to eject to the east northeast from northern Nevada into northern Utah and southern Idaho. Given sufficient moisture (PWATs 0.6-0.8 inches) and continued destabilization (Sfc CAPE ~250-750 J/kg) across portions of northwest and north central Utah, will see this feature yield some isolated to scattered afternoon/evening convection accordingly. CAM guidance continues to focus this activity primarily north of I-80 and through the vicinity of the Raft River Mountains, though the 4km NAM Nest and some recent HRRR runs do suggest some lighter showers may persist further eastward into the northern Wasatch Front late in the evening. For the initial convection across northwest Utah, marginally dry subcloud layers will bring at least a low end threat of some gusty outflow winds from any more robust cells. Any lingering activity will wane by late evening, with dry conditions returning overnight. Elsewhere across the forecast region, benign weather with clear to mostly clear skies and below normal temperatures is expected. On Wednesday, a weaker secondary shortwave will lift through, following largely the same trajectory as the previous one. Overall this appears to be a bit weaker though, and with guidance supporting a gradual drying trend and lower PWATs, anticipate more minimal afternoon/evening convective coverage across far northwest Utah. Otherwise, given a strengthening ridge across the southern CONUS and associated warming 700 mb temperatures, will see afternoon highs nudge upward several degrees in most locations. Even with the warmup, afternoon highs are expected to be fairly near to climatological normal levels for early September. .LONG TERM (After 12Z/6AM Thursday)...The extended forecast period continues to look to be pleasant under a high pressure ridge building into the region. This will bring a drying and warming trend to end the work week and into the weekend. Some uncertainty sits within the beginning of the following work week but some isolated precip could be headed back to the Great Basin. A warming trend over the end of the work week will bring back more seasonal like temperatures with highs reaching the mid and upper 80s across most low lying valleys while far SW Utah reaches the 90s. Uncertainty grows by the end of the weekend as model guidance has shown the possibility of trough building off the PNW coast and moving eastward. Uncertainty sits within how far it will build southward and if it brings any impacts at all to Utah and SW Wyoming. The NBM for now wants to create some PoPs (<40%) for the CWA to begin the week as any dynamical support from the trough could drive orographic processes and some isolated showers. But nothing substantial at this point. For now, the favored solution keeps the trough to our north and the ridge overhead of the CWA, keeping mild and calm weather as we move into fall! && .AVIATION...KSLC...Very light winds are expected to persist throughout the forecast period with a switch in direction of out the southeast this evening. Look for winds to becoming northwesterly early tomorrow afternoon. VFR conditions are forecast. .REST OF UTAH AND SOUTHWEST WYOMING...Scattered thunderstorms are forecast to track through portions of northern Utah that may bring gusty outflow winds to terminals through this evening. Rain or thunderstorms can't be altogether ruled out either. VFR conditions are forecast through tomorrow. && .FIRE WEATHER...A weak low pressure system will yield some isolated to scattered convection in northwest to north central Utah through the evening, with activity waning overnight. A similar setup is noted for Wednesday, though precipitation coverage is expected to be lower. Otherwise, strengthening high pressure will bring a drying and warming trend through the week. This in turn will bring afternoon minimum relative humidity values down into the teens for much of low elevation areas, and closer to the 20 to 30 percent range for higher elevations. By Sunday into early next week, there is some indication that moisture will begin to increase, and with it bring back low end precipitation chances for portions of the state. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && SHORT TERM...Warthen LONG TERM...Selbig AVIATION...NDeSmet FIRE WEATHER...Warthen For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity
The Salt Lake City radar (KMTX), 127 km away, was scanning. The volume nearest the first event began at 22:31 UTC.
2 thunderstorm wind. Local standard time, as filed.
The LUCIN2 mesonet station recorded a period of wind gusts to 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Hansel Valley mesonet station recorded a period of strong wind gusts ranging from 61 mph to 67 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area. The peak wind gust of 67 mph was recorded at 5:40 pm MST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2023Every state in 2023This day in weather historyWarnings in Utah, September 2023
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: 1131334, 1131339.