Strong outflow winds occurred in the western portion of the Salt Lake Valley.
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The episode as NWS SLC wrote it up.
Strong outflow winds occurred in the western portion of the Salt Lake Valley.
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 Jun 23, 3:26 AM MST, 7 hours 34 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 426 AM MDT Fri Jun 23 2023 .SYNOPSIS...A moisture starved Pacific trough will cross northern Utah today, curbing the warming trend and bringing gusty winds to central and southern Utah and a few thunderstorms to northern Utah. High pressure over the weekend will bring back the warming trend as conditions stay dry. Southerly winds will increase early next week as another trough approaches the California coast. && .SHORT TERM (through 12Z/6AM Sunday)...A Pacific low is centered over Nevada this morning, with Utah and southwest Wyoming under southwest flow out ahead of it, producing some gusty winds. The low is on track to move across northern Utah during the day today as it opens up and weakens. Associated moisture with the system looks rather limited, but will see a few afternoon showers and thunderstorms develop over northern Utah and southwest Wyoming, with the best threat for areas near the Idaho border. Given dry lower levels, gusty winds are possible with any storms that develop. However, main impact from the passing trough will be to cool the airmass over the area slightly, curbing the warming trend over the past few days. Maxes are expected to be around 5F below seasonal normals over northern Utah, with some pockets over central and southern Utah seeing some values up to 10F below climo. As the system exits tonight high pressure will move over the area in its wake. The ridge axis is expected to be roughly overhead on Saturday before sliding east of the area by Sunday as yet another trough approaches the California coast. The ridge will keep conditions dry over Utah and southwest Wyoming, with the warming trend returning beginning Saturday afternoon. .LONG TERM (After 12Z/6AM Sunday)...A ridge to the southeast and a trough across the west will keep our area oriented in southwesterly flow. This will result in gusty southwesterly winds, primarily across the southern/eastern half of Utah and southwest Wyoming, during the afternoon Sunday-Tuesday as the boundary layer mixes out. These winds are currently forecast to stay below advisory criteria. Dry air will remain in place with only a low chance (~20%) of isolated storms on Tuesday/Wednesday as the aforementioned trough slides off to the north. Temperatures will stay near average. As the week progresses the winds will gradually diminish as the trough shifts north and is replaced by more ridging towards the end of the period with increasing temperatures. Clusters are in good agreement regarding the upcoming pattern, however there is some divergence towards the end of the period with 69% of members building the ridge in by the weekend and 31% of members maintaining more of a zonal flow regime. && .AVIATION...KSLC...VFR conditions will persist throughout the period. Southerly winds will increase throughout the day, gusting up to 30kts, ahead of a disturbance that will produce high based isolated storms during the afternoon. There is ~15% chance of storms impacting the terminal directly, however there is a greater chance that outflow produced from dry microbursts could create a brief window of gusty westerly winds during the late afternoon. .REST OF UTAH AND SOUTHWEST WYOMING...VFR conditions will persist throughout the period for the entire CWA. Southerly winds will increase throughout the day ahead of a disturbance that will produce high based isolated storms (~15% chance) across northern Utah/SW Wyoming during the afternoon. These storms have the potential to produce gusty westerly outflow winds late in the afternoon. && .FIRE WEATHER...A trough over Nevada early this morning will slide across northern Utah today before exiting the area tonight. Moisture is lacking with this system, so associated showers and thunderstorms will be confined to far northern Utah. However, some gusty winds will accompany the system, particularly over central and southern Utah. High pressure will move over the area this weekend, resulting in dry conditions with a warming trend in temperatures. By early next week, another storm system will approach the California coast, allowing southerly winds to increase over Utah once again as relative humidity values continue to drop. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && SHORT TERM/FIRE WEATHER...Traphagan LONG TERM/AVIATION...Mahan For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity
The Salt Lake City radar (KMTX), 79 km away, was scanning. The volume nearest the first event began at 21:12 UTC.
2 thunderstorm wind, 1 high wind. Local standard time, as filed.
A wind gust of 66 mph was recorded at the SR-201 at I-80 mesonet site.
A wind gust of 64 mph was measured at the Gunnison Island mesonet site.
A wind gust of 66 mph was measured at the Fremont Island mesonet site.
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, June 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: 1111377, 1196119, 1196120.