From the afternoon of July 6 on into the evening, isolated to scattered clusters of showers and thunderstorms impacted portions of northern Utah and southwest Wyoming, yielding a few strong to severe wind gusts.
Every event with a place to put it. Tap one for its entry below.
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.
From the afternoon of July 6 on into the evening, isolated to scattered clusters of showers and thunderstorms impacted portions of northern Utah and southwest Wyoming, yielding a few strong to severe wind gusts.
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 Jul 6, 2:51 PM MST, 8 hours 9 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 351 PM MDT Thu Jul 6 2023 .SYNOPSIS...A stalled frontal boundary will linger across northern Utah through Friday, while southern Utah remains hot, dry and locally breezy. High pressure will strengthen across the region over the weekend into early next week bringing a warming trend. && .SHORT TERM (Through 12Z/6AM Saturday)...A quasi-zonal flow extends across the Great Basin this afternoon, along the northern periphery of a subtropical ridge centered across the Desert Southwest. At the surface, a stalled frontal boundary extends across central Utah this afternoon, roughly along the I-70 corridor, and is most evident in isodrosotherm analysis. Isolated weak convection continues to the north of this boundary and will likely linger into the evening and perhaps overnight hours. To the south of this boundary, a hot and dry airmass is in place across southern Utah, where afternoon RH has fallen into the single digits to the south of I-70/Highway 50. This boundary will largely remain in place through Friday, with hot and very dry conditions remaining across southern Utah, while a slightly cooler and slightly more moist airmass remains in place across the north. A weak wave approaching from the west late in the day may allow for slightly greater convective coverage across northern Utah, but in general only minor changes from today are expected. .LONG TERM (After 12Z/6AM Saturday)...The Desert Southwest ridge will amplify and become dominant across the Great Basin and Desert Southwest through the long term period. Early on in the period a coupe of weak shortwave features will lift across the region Saturday and late Sunday. This former feature will maintain a threat for isolated convection mainly over the northern mountains, while the second feature, while more amplified, will be interacting with a very dry airmass and likely pass through the area with little fanfare late Sunday. By Monday the longwave ridge will bring hot and dry conditions across the forecast area, will persist through at least midweek. Ensemble guidance suggests some uncertainty beyond Wednesday in the evolution of this ridge, with some potential for a slight cool down toward the end of the week as height falls across the northern Rockies may suppress the ridge axis further, or even retrograde it westward. && .AVIATION...KSLC...Light rain showers just north of KSLC will continue to produce somewhat variable northerly winds at the terminal through 00z. North flow will then likely continue until our transition to drainage winds, though an isolated shower may produce a brief period of strong westerly winds near 01-03z (15% likelihood). Southeasterly winds are likely to arrive by 04-05z, though may arrive as late as 08z (15% likelihood). .REST OF UTAH AND SOUTHWEST WYOMING...Isolated showers stretching E- W across northern UT continue to slowly shift northward, with the main impact being gusty and variable winds. These winds are most likely to impact from KENV-KOGD-KEVW and points northward. There is a 15% chance for thunder over the Uintas and in Uinta Co., WY through the evening. Gusty southwest winds are possible across southeastern UT Friday afternoon. VFR conditions will prevail. && .FIRE WEATHER...A hot and dry airmass will remain in place across the southern half of Utah through early next week. Daytime humidity will fall into the single digits each afternoon, while overnight recovery will remain marginal to poor. Additionally, winds aloft will mix down to the surface resulting in gusty winds each afternoon, which will locally approach critical fire weather criteria where fuels are sufficiently dry. Meanwhile, a stalled frontal boundary will result in cooler conditions along with isolated showers and thunderstorms through Friday. Strengthening high pressure will bring a warming trend Sunday into early next week. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && Seaman/Cunningham For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity
The Salt Lake City radar (KMTX), 34 km away, was scanning. The volume nearest the first event began at 05:57 UTC.
1 thunderstorm wind. Local standard time, as filed.
The Gunnison Island mesonet station recorded a wind gust of 76 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
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, July 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: 1121141.